List of airline codes
From Wikipedia the free encyclopedia
This is a list of all airline codes. The table lists the IATA airline designators, the ICAO airline designators and the airline call signs (telephony designator). Historical assignments are also included for completeness.
Codes[edit]
| IATA | ICAO | Airline | Call sign | Country/Region | Comments |
|---|---|---|---|---|---|
| PR | BOI | 2GO | ABAIR | Philippines | |
| EVY | 34 Squadron, Royal Australian Air Force | Multiple | |||
| GNL | 135 Airways | GENERAL | United States | ||
| 1A | n/a | Amadeus IT Group S.A. | n/a | Global | GDS and airline hosting system (CRS/PSS) |
| 1B | n/a | Sabre travel network Asia-Pacific (ex-Abacus) | n/a | APAC | Regional distribution |
| 1E | n/a | Travelsky | n/a | China | Local distribution system and hosting system (CRS/PSS) |
| 1F | n/a | Infini travel information, Inc. | n/a | Japan | Local distribution system (CRS) |
| 1G | n/a | Travelport (Galileo core) | n/a | Global | GDS (CRS) |
| 1H | n/a | Sirena travel | n/a | Russia | Local distribution system (CRS) and PSS |
| 1J | n/a | Axess international network, Inc. | n/a | Japan | Local distribution system (CRS) |
| 1K | n/a | AIRKIOSK | n/a | Global | Local distribution system (CRS) and PSS |
| 1M | n/a | Sirin | n/a | Russia | Local distribution system (CRS) and PSS |
| 1P | n/a | Travelport (Worldspan core) | n/a | Global | GDS (CRS) |
| 1S | n/a | Sabre travel network | n/a | Global | GDS and airline hosting system (CRS/PSS) |
| 1T | n/a | Hitit Computer Services | n/a | Turkey | Computer reservation system |
| 1U | n/a | Google/ITA | n/a | United States | Airline IT provider |
| 2T | TBS | Timbis Air | TIMBIS | Kenya | |
| WYT | 2 Sqn No 1 Elementary Flying Training School | WYTON | United Kingdom | Royal Air Force | |
| TFU | 213th Flight Unit | THJY | Russia | State Airline | |
| CHD | 223rd Flight Unit | CHKALOVSK-AVIA | Russia | State Airline | |
| TTF | 224th Flight Unit | CARGO UNIT | Russia | State Airline | |
| TWF | 247 Jet Ltd | CLOUD RUNNER | United Kingdom | ||
| SEC | 3D Aviation | SECUREX | United States | ||
| Q5 | MLA | 40-Mile Air | MILE-AIR | United States | |
| QRT | 4D Air | QUARTET | Thailand | Defunct | |
| PIU | 43 Air School | PRIMA | South Africa | ||
| 4D | ASD | Air Sinai | AIR SINAI | Egypt | Defunct |
| 4R | SEK | Star East Airline | EAST RIDER | Romania | |
| 4O | AIJ | Interjet | ABC AEROLINEAS | Mexico | Defunct |
| 5W | WAZ | Wizz Air Abu Dhabi | WIZZ SKY | United Arab Emirates | |
| 7B | UBE | Bees Airline | FLOWER BEE | Ukraine | Defunct, AOC revoked due to not having any aircraft. |
| AQ | JYH | 9 Air | TRANS JADE | China | |
| BRO | 2Excel Aviation | BROADSWORD | United Kingdom |
| |
| GBT | A-Jet Aviation Aircraft Management | GLOBETROTTER | Austria | ||
| AJR | A-Jet Aviation Company | JET MONGOLIA | Mongolia | ||
| SFM | A-Safar Air Services | AIR SAFAR | Nigeria | ||
| AJJ | A2 Jet Leasing | ATLANTIC JET | United States | ||
| XXV | AASANA | Bolivia | |||
| BBE | Ababeel Aviation | BABEL AIR | Sudan | ||
| 1B | Abacus International | Singapore | Computer reservation system | ||
| BJ | ABJ | Abaeté Linhas Aéreas | ABAETE | Brazil | defunct |
| NKP | Abakan Air | ABAKAN AIR | Russia | 2014[1] | |
| RL | ABG | Abakan-Avia | ROYAL FLIGHT | Russia | |
| ABE | Aban Air | ABAN | Iran | Former IATA code: K5 | |
| MRP | Abas | ABAS | Czech Republic | ||
| AHU | ABC Air Hungary | ABC HUNGARY | Hungary | defunct | |
| FTY | ABC Bedarfsflug | FLY TYROL | Austria | ||
| W9 | AAB | Abelag Aviation | ABG | Belgium | defunct |
| BDV | Aberdair Aviation | ABERDAV | Kenya | ||
| ROH | Aberdair Aviation Ghana | Ghana | |||
| ADJ | Abidjan Air Cargo | ABICAR | Côte d'Ivoire | defunct | |
| ABP | ABS Jets | BAIR | Czech Republic | Named changed from Aba Air | |
| M3 | TUS | ABSA Cargo | Turismo | Brazil | |
| TTN | Absolute Flight Services | TITANIUM | South Africa | ||
| GB | ABX | ABX Air | ABEX | United States | August 15, 2003 Air operations of former Airborne Express |
| IAE | AC Insat-Aero | Russia | defunct | ||
| NCL | ACA (Ancargo Air) | ANCARGO AIR | Angola | defunct | |
| ACD | Academy Airlines | ACADEMY | United States | ||
| ZA | CYD | AccessAir | CYCLONE | United States | defunct |
| Ace Air | ACE TAXI | South Korea | defunct as of September 2015 | ||
| CFM | ACEF | ACEF | Portugal | Transportes Aéreos e Cargas, code no longer allocated | |
| ARO | Acero Taxi | ACERO | Mexico | ||
| VX | AES | ACES Colombia | ACES | Colombia | defunct |
| BVR | ACM Air Charter | BAVARIAN | Germany | ||
| BJT | ACM Aviation | BAY JET | United States | ||
| CRV | Acropolis Aviation | ACROPOLIS | United Kingdom | ||
| ORS | Action Air | AVIATION SERVICE | Italy | ICAO Code no longer allocated, defunct | |
| AXQ | Action Airlines (Action Air Charter) | ACTION AIR | United States | ||
| AVR | Active Aero Charter, Inc. | ACTIVE AERO | United States | ||
| RRM | Acvila Air-Romanian Carrier | AIR ROMANIA | Romania | defunct | |
| ADC | AD Astra Executive Charter | AD ASTRA | Poland | ||
| VUE | AD Aviation | FLIGHTVUE | United Kingdom | ||
| ADE | Ada Air | ADA AIR | Albania | defunct, former IATA code: ZY | |
| KI | DHI | Adam Air | ADAM SKY | Indonesia | defunct |
| Z7* | ADK | ADC Airlines | ADCO | Nigeria | defunct; former name: Aviation Development Company |
| ADW | ADC Airways | Lebanon | defunct | ||
| DSC | Addis Air Cargo Services | ADDIS CARGO | Ethiopia | ||
| DDS | Addis Airlines | ADDIS LINE | Ethiopia | DEFUNCT | |
| ADF | Ade, Aviación Deportiva | ADE AVIACION | Spain | ||
| TEC | ADI Shuttle Group | TECHJET | United States | ||
| SWH | Adler Aviation | SHOCKWAVE | Canada | ||
| JP | ADR | Adria Airways | ADRIA | Slovenia | defunct as of September 2019 |
| DRO | Adro Servicios Aereos | ADRO SERVICIOS | Mexico | ||
| ADV | Advance Air Charters | ADVANCE | Canada | defunct | |
| AXX | Advance Air Luftfahrtgesellschaft | SKY SHUTTLE | Germany | ||
| AAX | Advance Aviation | ADVANCE AVIATION | Thailand | ||
| XTJ | Advance Aviation Services | United States | |||
| 4G* | Advance Leasing Company | United States | |||
| AN | WSN | Advanced Air | WINGSPAN | United States | 2015[2] |
| ADD | Advanced Air Co. | Japan | ICAO Code no longer allocated | ||
| ADV | Advanced Flight Training | ADVANCED | United Kingdom | ||
| RDD | Adygea Airlines | ADLINES | Russia | defunct | |
| DVN | Adventia | Spain | |||
| EBS | AEG Aviation Services | United States | |||
| A3 | AEE | Aegean Airlines | AEGEAN | Greece | |
| ALS | Aeralp | AERALP | France | ||
| AEF | Aerea | Spain | |||
| DRD | Aereo Dorado | AEREO DORADO | Mexico | ||
| FUT | Aereo Futuro | AEREO FUTURO | Mexico | ||
| MMG | Aereo Ruta Maya | RUTA MAYA | Guatemala | ||
| AGI | Aereo Transportes Los Angeles de America | ANGELES AMERICA | Mexico | ||
| WWG | Aereo WWG | AERO-W | Mexico | ||
| AED | Aernord | Aernspa | Italy | defunct | |
| AKR | Aero Clinker | AERO CLINKER | Mexico | ||
| RRB | Aero Club de Castellon | Spain | |||
| 9D | CND | Aero Continente Dominicana | CONDOMINICANA | Dominican Republic | defunct |
| ARP | Aero Corporate | IVORYCORP | Côte d'Ivoire | ||
| ML | AEK | Aero Costa Rica | ACORISA | Costa Rica | defunct |
| EPU | Aero Elite Acapulco | ELITACAPULCO | Mexico | ||
| XPN | Aero Express | Niger | |||
| AJP | Aero Jets Corporativos | AEROJETS | Mexico | ||
| VF | TKJ | AJet | ANATOLIAN | Turkey | formerly AnadoluJet |
| OWN | Aero Owen | AERO OWEN | Mexico | 2014[1] | |
| GHM | Aero Service Bolivia | Bolivia | |||
| GLM | Aero Services Mali | GLOBAL MALI | Mali | ||
| GUE | Aero Servicio Guerrero | AERO GUERRERO | Mexico | ||
| ASR | Aero Sotravia | SOTRAVIA | France | 2014[1] | |
| ABA | Aero-Beta | AEROBETA | Germany | ||
| DW | UCR | Aero-Charter Ukraine | CHARTER UKRAINE | Ukraine | |
| EAP | Aero-Pyrenees | AERO-PYRENEES | France | ||
| AJH | Aeroaljarafe | ALJARAFE | Spain | ||
| AOB | Aerocaribe Coro | CARIBE CORO | Venezuela | ||
| ACR | Aerocenter, Escuela de Formación de Pilotos Privados de Avión | AEROCENTER | Spain | ||
| ERC | Aerocharter | Guatemala | defunct | ||
| BSO | Aeroclub Barcelona-Sabadell | Spain | |||
| NVA | Aeroclub de Albacete | Spain | |||
| LUE | Aeroclub de Alicante | Spain | |||
| MLL | Aeroclub de Mallorca | MALLORCA | Spain | ||
| AVX | Aeroclub de Vitoria | Spain | |||
| CTD | Aerocorporativos | AEROCORPORATIVOS | Mexico | ||
| RRO | Aerocredo | Russia | |||
| DVI | Aerodavinci | AERO DAVINCI | Mexico | ||
| FAQ | Aerofaq | Ecuador | |||
| SU | AFL | Aeroflot | AEROFLOT | Russia | |
| P3 | PLS | Aeroflot-Plus | AEROPLUS | Russia | |
| AEG | Aerofumigaciones Sam | FUMIGACIONES SAM | Chile | defunct | |
| AGQ | Aerogala | GALASERVICE | Chile | defunct | |
| ARH | Aerohelicopteros | AEROHELCA | Venezuela | 2014[1] | |
| BJU | AeroJet | JET EXPRESS | Angola | ||
| ARJ | Aerojet de Costa Rica, S.A. | Costa Rica | |||
| LFT | Aerolift Company | LIFTCO | Sierra Leone | defunct | |
| LIN | Aerolimousine | AEROLIMOUSINE | Russia | ||
| PCP | Aerolínea Principal Chile | PRINCIPAL | Chile | ||
| ALT | Aerolíneas Centrales | AERLINEAS CENTRALES | Mexico | ||
| AHL | Aerolíneas Hidalgo | HIDALGO | Mexico | ||
| APR | Aerolíneas Primordiales | AEROPERLAS | Mexico | ||
| LDL | Aerologic | Russia | |||
| VSC | Aeronautic de Los Pirineos | Spain | |||
| PSE | Aeroservicio Sipse | SIPSE | Mexico | ||
| PSL | Aeroservicios Corporativos De San Luis | CORSAN | Mexico | ||
| EAE | Aeroservicios Ecuatorianos | AECA | Ecuador | ||
| AES | Aerosur Paraguay | AEROPARAGUAY | Paraguay | ||
| BTS | Aerotaxis Albatros | AEROLINEAS ALBATROS | Mexico | ||
| PRI | Aerotransportes Privados | AEROPRIV | Mexico | ICAO code in use by another company, call sign no longer allocated | |
| PVA | Aerotransportes Privados | TRANSPRIVADO | Mexico | ||
| VMX | Aeroventas de Mexico | VENTA | Mexico | 2014[1] | |
| ABU | Aerovías Bueno | AEROBUENO | Colombia | defunct | |
| ACB | African Cargo Services | AFRICARGO | Kenya | ||
| AAP | Arabasco Air Services | ARABASCO | Saudi Arabia | ||
| AAR | Americ Air | PATRIOT | United States | defunct | |
| AAS | Airtransservice | Aviaservice | Russia | defunct | |
| AAS | Austrian Air Services | AIR SERVICES | Austria | defunct | |
| OB | AAT | Austrian Airtransport | AUSTRIAN CHARTER | Austria | defunct; former IATA code: U8, OG; former ICAO code: AUC |
| AAV | Aly Aviation | United Kingdom | defunct; former ICAO code: AAY | ||
| AAW | Austin Airways | AUSTIN | Canada | defunct | |
| SM | AAW | Allied Airways | United Kingdom | defunct, taken over by British European Airways which went on to form British Airways. | |
| AAW | Almeta Air | ALMETA AIR | Austria | defunct | |
| KJ | AAZ | Asian Air | Kyrgyzstan | ||
| ABT | Ambeo | AMBITION | United Kingdom | ||
| ABE | Arberia Airlines | ARBERIA AIRLINES | Albania | defunct | |
| ACE | Air Charter Express | Ghana | |||
| YE | ACQ | Aryan Cargo Express | India | ||
| ACS | Aircraft Sales and Services | AIRCRAFT SALES | Pakistan | ||
| ABS | Air Central | AIR CENTRAL | United States | defunct | |
| ADT | Arrendaminetos y Transportes Turisticos | ARRENDA-TRANS | Mexico | ||
| ADZ | Avio Delta | Bulgaria | |||
| AED | Aie Experience Flight | AIE EXPERIENCE | United Kingdom | defunct | |
| VJ | AFF | Africa Airways | AFRIWAYS | Benin | defunct |
| AFM | AEROSPEED FORMATION ET MAINTENANCE | EPIC AIR | France | ||
| QH | FLA | Air Florida | PALM | United States | relaunching |
| 3O | MAC | Air Arabia Maroc | ARABIA MAROC | Morocco | This ICAO designator was previously used by Malta Air Charter |
| MRY | Air Marine | AIR MARINE | France | ||
| PNK | Air Pink | AIRPINK | Serbia | ||
| PXG | Aitheras Aviation Group | United States | |||
| AFN | African International Airlines | SIMBA | Lesotho | ||
| HD | ADO | AIRDO | AIR DO | Japan | |
| ACC | Airspeed Charter | Jamaica | 2014[1] | ||
| PNX | AIS Airlines | SPINNER | Netherlands | ||
| AVD | Álamo Aviación, S.L. | ALAMO | Spain | ||
| FSY | Algonquin Airlink | FROSTY | Canada | 2014[1] | |
| TTX | Alliance Air Charters | TWISTER | United States | ||
| UJ | LMU | AlMasria Universal Airlines | ALMASRIA | Egypt | |
| ALN | Alpha Jet, S.R.O. | TOLEMAC | Slovakia | 2014[1] | |
| APN | Alpine Airlines | AIR ALPES | France | ||
| BAH | The Amiri Flight | BAHRAIN | Bahrain | ||
| A2 | AWG | Animawings | ANIMA WINGS | Romania | |
| TLB | Atlantique Air Assistance | TRIPLE-A | France | ||
| UJX | Atlas Ukraine Airlines | ATLAS UKRAINE | Ukraine | 2014[1] | |
| AGM | Aviation West Charters | ANGEL MED | United States | 2015[3] | |
| X9 | NVD | Avion Express | NORDVIND | Lithuania | Name changed from Nordic Solutions Air |
| AZB | Azamat | TUMARA | Kazakhstan | defunct | |
| 3S* | AEN | Aeroland Airways | AEROLAND | Greece | defunct, ICAO code no longer allocated |
| NGF | Air Charity Network | ANGEL FLIGHT | United States | Re-allocated in 2014 was used by Angel Flight America[4] | |
| WFT | Aircharters Worldwide | WORLD FLIGHT | United States | Allocated 2014[5] | |
| JU | ASL | Air Serbia | AIR SERBIA | Serbia | Name changed from Aeroput to JAT Yugoslav Airlines to Jat Airways to Air Serbia. Formerly used JAT as ICAO code. |
| QH | LYN | Air Kyrgyzstan | ALTYN AVIA | Kyrgyzstan | Name changed from Kyrgyzstan |
| XK | CCM | Air Corsica | CORSICA | France | |
| AHS | AHS Air International | HIGH SKY | Pakistan | ||
| ROO | Aero Roa | AERO ROA | Mexico | ||
| AWF | Aeroforward | United States | |||
| SUP | Aeronautical Charters | SUN SPEED | United States | ||
| PSO | Aerotaxis Pegaso | AEROPEGASO | Mexico | ||
| EI | EIN | Aer Lingus | SHAMROCK | Ireland | |
| EG | EUK | Aer Lingus UK | GREEN FLIGHT | United Kingdom | |
| VLB | Air Volta | VOLTA | Bulgaria | ||
| FCJ | AirSprint US | FRACJET | United States | Previously used code "HAB" | |
| TEW | Airteam Charter | TEAMWORK | South Africa | ||
| STT | Alpha Star Charter | STAR CHARTER | Saudi Arabia | ||
| LBZ | Angkasa Super Service | Indonesia | |||
| HEZ | Arrow Aviation | ARROW | Israel | ||
| UAH | Air Experience Flight, Cranwell | United Kingdom | Royal Air Force | ||
| RVQ | Aero Jet International | REVA AIR | United States | ||
| ASK | Aerosky | MULTISKY | Spain | ||
| AEH | Aero4m | AEROCUTTER | Slovenia | ||
| ERO | Aeroecom | AEROECOM | Venezuela | ||
| A8 | XAU | Aerolink Uganda | PEARL | Uganda | |
| NKY | Aeromonkey | AEROMON | Mexico | ||
| AWP | Aeroworld Pakistan | Pakistan | |||
| AGA | AG Air | GEOLINE | Georgia | ||
| ABZ | Air Ambulance Services | ISLAND LIFEFLIGHT | Bahamas | ||
| RV | ROU | Air Canada Rouge | ROUGE | Canada | |
| CNM | Air China Inner Mongolia | MENGYUAN | China | ||
| VRE | Air Côte d'Ivoire | COTE DIVORIE | Ivory Coast | ||
| AWL | Air Walser | Malta | |||
| AXY | Air X Charter | LEGEND | Malta | ||
| OES | ART Aviation | ART AUSTRIA | Austria | ||
| ASF | Austrian Air Force | AUSTRIAN AIRFORCE | Austria | ||
| AVG | Aviation Legacy | AVILEF | Gambia | ||
| 7A | AZY | Aztec Worldwide Airlines | AZTEC WORLD | United States | |
| 6U | ACX | Air Cargo Germany | LOADMASTER | Germany | defunct |
| AAD | Aero Aviation Centre Ltd. | SUNRISE | Canada | Ceased operations 1995 | |
| SII | Aero Servicios Ejecutivos Internacionales | ASEISA | Mexico | ||
| BZS | Aero Biniza | BINIZA | Mexico | ||
| Aero Comondu | AERO COMONDU | Mexico | |||
| AET | Aero-Palma | AERO PALMA | Spain | defunct | |
| ABM | Aero Albatros | ALBATROS ESPANA | Spain | ||
| ZI | AAF | Aigle Azur | AIGLE AZUR | France | Former name: Lucas Aigle Azur; former IATA code: LK |
| AAM | Aim Air | Moldova | |||
| AAO | Atlantis Airlines (USA) | ATLANTIS AIR | United States | ||
| AAP | Aerovista Airlines | AEROVISTA GROUP | Kyrgyzstan | defunct | |
| AE | AE | Air Ceylon | CEYLON | Sri Lanka | defunct |
| 4K* | AAS | Askari Aviation | AL-ASS | Pakistan | |
| AAU | Australia Asia Airlines | AUSTASIA | Australia | Subsidiary merged into Qantas; former IATA code: IM | |
| AAV | Astro Air International | ASTRO-PHIL | United States | ||
| 8U | AAW | Afriqiyah Airways | AFRIQIYAH | Libya | |
| Q9 | AFU | Afrinat International Airlines | AFRINAT | Gambia | defunct, ICAO code no longer allocated |
| AAX | Afric'air Express | AFREX | Côte d'Ivoire | defunct | |
| BRL | Air Brasd'or | BRASD'OR | Canada | ||
| AFH | Air Fecteau | FECTO | Canada | defunct | |
| BRM | Air 500 | BOOMERANG | Canada | defunct | |
| AAG | Atlantic Flight Training | ATLANTIC | United Kingdom | Changed from Air Atlantique in 2014[1] | |
| KI | AAG | Air Atlantique | ATLANTIC | United Kingdom | Former name: Atlantic Air Transport; former IATA codes: 7M, DG, transferred to Atlantic Flight Training in 2014. |
| QB | AAJ | Air Alma | AIR ALMA | Canada | Ceased operations 10/01/2002; former IATA code: 4L |
| ACS | Air Cess | Liberia | defunct | ||
| ADT | Air Dorval | AIR DORVAL | Canada | defunct | |
| AHN | Air Hungaria | AIR HUNGARIA | Hungary | ||
| AHR | Air Adriatic | ADRIATIC | Croatia | defunct | |
| LD | AHK | Air Hong Kong | AIR HONG KONG | Hong Kong | |
| AHS | Air Viggi San Raffaele | AIRSAR | Italy | ||
| AAI | Air Aurora | BOREALIS | United States | Former IATA code: AX | |
| ACU | Air Cargo Transportation System | AFRISPIRIT | Kenya | ||
| ACV | Air Charter Service | United Kingdom | ICAO code no longer allocated | ||
| ADC | Air Atlantic Dominicana | ATLAN-DOMINICAN | Dominican Republic | defunct | |
| 2Y | ADW | Air Andaman | AIR ANDAMAN | Thailand | defunct 2004 |
| UX | AEA | Air Europa | EUROPA | Spain | |
| AEQ | Air Express | LUNA | Sweden | ||
| IG | AEY | Air Italy | AIR ITALY | Italy | merged into Meridiana |
| ASW | Air Southwest Ltd. | AIRSOUTHWEST | Canada | defunct | |
| ASX | Air Special | AIRSPEC | Czech Republic | ||
| NX | AMU | Air Macau | AIR MACAO | Macao | |
| 6A | AMW | Armenia Airways | ARMENIA | Armenia | |
| HM | SEY | Air Seychelles | SEYCHELLES | Seychelles | |
| SFB | Air Sofia | AIR SOFIA | Bulgaria | defunct | |
| BRF | Air Bravo | AIR BRAVO | Uganda | ||
| AF | AFR | Air France | AIRFRANS | France | |
| ACG | Air Partner | AIR PARTNER | United Kingdom | ||
| SB | ACI | Air Caledonie International | AIRCALIN | France | |
| VSG | AirClass Airways | VISIG | Spain | formerly Visig Operaciones Aéreas | |
| EH | AKX | Air Nippon Network Co. Ltd. | ALFA WING | Japan | merged into ANA Wings |
| ALM | Air ALM | ANTILLEAN | Netherlands Antilles | defunct | |
| ALN | Air Lincoln | CHICAGO LINCOLN | United States | ||
| ACM | Air Caledonia | WEST CAL | Canada | ||
| ED | AXE | AirExplore | GALILEO | Slovakia | |
| AGM | Air Guam | AIR GUAM | United States | ||
| ZW | AWI | Air Wisconsin | WISCONSIN | United States | |
| ALU | Air Luxor STP | LUXORJET | São Tomé and Príncipe | ||
| YI | RSI | Air Sunshine | AIR SUNSHINE | United States | |
| GN | AGN | Air Gabon | GOLF NOVEMBER | Gabon | defunct |
| 9T | RUN | Air ACT | CARGO TURK | Turkey | |
| AFV | Air Afrique Vacancies | AFRIQUE VACANCE | Côte d'Ivoire | ||
| ZB | ABN | Air Albania | AIR ALBANIA | Albania | |
| 3J | AAQ | Air Alliance | LIAISON | Canada | defunct |
| WP | ATW | Air Antwerp | DEVIL | Belgium | defunct |
| BX | ABL | Air Busan | AIR BUSAN | South Korea | |
| ACH | Air Cargo Plus | AIR PLUS | Liberia | ||
| AAT | Air Central Asia | Kyrgyzstan | |||
| LB | LEP | Air Costa | LECOSTA | India | |
| AFS | Air Data | United Kingdom | |||
| GL | GRL | Air Greenland | GREENLAND | Greenland | |
| 3S | GUY | Air Guyane Express | GREEN BIRD | French Guiana | |
| AHO | Air Hamburg | AIR HAMBURG | Germany | ||
| NQ | AJX | Air Japan | AIR JAPAN | Japan | |
| IJ | LIB | Air Liberté | LIBERTE | France | defunct |
| TT | KLA | Air Lithuania | KAUNAS | Lithuania | defunct |
| QM | AIM | Air Malawi | MALAWI | Malawi | defunct |
| L6 | AMI | Air Maldives | AIR MALDIVES | Maldives | defunct |
| ML | BIE | Air Mediterranee | MEDITERRANEE | France | defunct |
| P8 | MKG | Air Mekong | MEKONG | Vietnam | defunct |
| AMG | Air Minas Linhas Aéreas | AIR MINAS | Brazil | defunct | |
| ZQ | MNE | Air Montenegro | MOUNT EAGLE | Montenegro | |
| TAH | Air Moorea | AIR MOOREA | France | defunct | |
| ANV | Air Nevada | AIR NEVADA | United States | ||
| NZ | ANZ | Air New Zealand | NEW ZEALAND | New Zealand | "NZ" used by New Zealand National Airways Corporation until its merger with Air New Zealand in 1978 "TE" used by TEAL from 1940-1965, then Air New Zealand from 1965-1990 |
| 4N | ANT | Air North Charter - Canada | AIR NORTH | Canada | |
| AOE | Air One Executive | Italy | |||
| AEI | Air Poland | POLISH BIRD | Poland | defunct | |
| YP | APZ | Air Premia | AIR PREMIA | South Korea | |
| AVZ | Air Valencia | AIR VALENCIA | Spain | ||
| AMO | Air Montreal (Air Holdings Inc.) | AIR MONTREAL | Canada | ||
| BM | Air Sicilia | Italy | defunct | ||
| AMR | Air Specialties Corporation | AIR AM | United States | Air American, Total Air | |
| AMS | Air Muskoka | AIR MUSKOKA | Canada | ||
| AOJ | Avcon Jet | ASTERIX | Austria | ||
| AJU | Air Jetsul | AIRJETSUL | Portugal | ||
| AKA | Air Korea Co. Ltd. | Republic of Korea | |||
| LIV | Air Livonia | LIVONIA | Estonia | defunct | |
| ZX | ABL | Air BC | AIRCOACH | Canada | Merged into Air Canada Jazz |
| ABN | Air Fret Senegal | Senegal | |||
| LJA | Air Jamahiriya Company | AIR JAMAHIRIYA | Libya | ICAO code no longer allocated | |
| G8 | AGB | Air Service Gabon | Gabon | defunct | |
| 7T | AGV | Air Glaciers | AIR GLACIERS | Switzerland | |
| MVM | Air Cargo America | PEGASUS | United States | ||
| AMY | Air Ambar | AIR AMBAR | Dominican Republic | ||
| 6V | VGA | Air Vegas | AIR VEGAS | United States | defunct |
| AOU | Air Tractor | AIR TRACTOR | Croatia | ||
| APA | Air Park Aviation Ltd. | CAN-AM | Canada | ||
| APG | Air People International | AIR PEOPLE | Thailand | ||
| NH | ANA | All Nippon Airways | ALL NIPPON | Japan | |
| ANB | Air Navigation And Trading Co. Ltd. | AIR NAV | United Kingdom | Former ICAO code: AAT | |
| NGO | Air-Angol | AIR ANGOL | Angola | ||
| TZ | TWG | air-taxi Europe | TWINGOOSE | Germany | |
| NGP | Air Nigeria | REGAL EAGLE | Nigeria | defunct | |
| 2Q | SNC | Air Cargo Carriers | NIGHT CARGO | United States | |
| SND | Air Samarkand | ARSAM | Uzbekistan | ||
| V7 | SNG | Air Senegal International | AIR SENEGAL | Senegal | defunct |
| SNY | Air Sandy | AIR SANDY | Canada | ||
| AII | Air Integra | INTEGRA | Canada | ||
| BFF | Air Baffin | AIR BAFFIN | Canada | renamed to Air Nunavut | |
| BDM | Air Bandama | BANDAMA | Ivory Coast | ||
| AB | BER | Air Berlin | AIR BERLIN | Germany | defunct |
| ABT | Air Brousse | AIR BROUSSE | Canada | defunct | |
| APV | Air Plan International | AIR PLAN | Democratic Republic of the Congo | ||
| ARX | Air Xpress, Inc. | AIREX | United States | ||
| HTT | Air Tchad | HOTEL TANGO | Chad | ||
| ARZ | Air Resorts | AIR RESORTS | United States | ||
| ASB | Air-Spray 1967 Ltd. | AIR SPRAY | Canada | ||
| ASC | Air Star Corporation | AIR STAR | Canada | ||
| 4D | ASD | Air Sinai | AIR SINAI | Egypt | |
| AQN | Air Queensland | BUSHAIR | Australia | defunct | |
| ARC | Air Routing International Corp. | United States | |||
| QN | ARR | Air Armenia | AIR ARMENIA | Armenia | |
| AIL | Air Illinois | AIR ILLINOIS | United States | defunct | |
| AI | AIC | Air India Limited | AIRINDIA | India | |
| AIG | Air Inter Gabon | Gabon | |||
| PJ | SPM | Air Saint Pierre | SAINT-PIERRE | France | |
| SZ | WOW | Air Southwest | SWALLOW | United Kingdom | defunct |
| ATJ | Air Traffic GmbH | SNOOPY | Germany | ||
| 8C | ATN | Air Transport International | AIR TRANSPORT | United States | |
| ATQ | Air Transport Schiphol | MULTI | Netherlands | ||
| ATS | Air Transport Service | Democratic Republic of the Congo | |||
| AVG | Air Falcon | DJIBOUTI FALCON | Djibouti | ||
| AUX | Air Uganda International Ltd. | Uganda | |||
| NF | AVN | Air Vanuatu | AIR VAN | Vanuatu | |
| ZB | BUB | Air Bourbon | BOURBON | Reunion | defunct |
| CC | ABD | Air Atlanta Icelandic | ATLANTA | Iceland | |
| AIE | Air Inuit | AIR INUIT | Canada | ||
| AIS | Air Sureste | SURESTE | Spain | ||
| RB | SBK | Air Srpska | Air Srpska | Bosnia and Herzegovina | defunct |
| TN | THT | Air Tahiti Nui | TAHITI AIRLINES | France | |
| SW | NMB | Air Namibia | NAMIBIA | Namibia | defunct |
| NSK | Air Intersalonika | INTERSALONIKA | Greece | ||
| NTL | Air Anatolia | AIR ANATOLIA | Turkey | defunct | |
| SGA | Air Saigon | AIR SAIGON | Vietnam | ||
| AFW | Afrique Regional Airways | AFRAIR | Côte d'Ivoire | defunct | |
| AW | AFW | Africa World Airlines | BLACKSTAR | Ghana | |
| ACX | Air Charters | PARAIR | Canada | defunct | |
| PE | AEL | Air Europe Italy | AIR EUROPE | Italy | defunct |
| JM | AJM | Air Jamaica | JAMAICA | Jamaica | merged into Caribbean Airlines; ICAO and IATA codes no longer used. |
| AWN | Air Niamey | AIR NIAMEY | Niger | ||
| AWT | Air West | AIR WEST | Canada | ||
| 6G | AWW | Air Wales | RED DRAGON | United Kingdom | defunct, ICAO code no longer allocated |
| TX | FWI | Air Caraïbes | FRENCH WEST | France | |
| IX | AXB | Air India Express | EXPRESS INDIA | India | |
| AXD | Air Express | AIR SUDEX | Sudan | ||
| BSB | Air Wings | ARBAS | Moldova | ||
| BT | BTI | Air Baltic | AIRBALTIC | Latvia | |
| ANI | Air Atlantic (Nig) Limited | NIGALANTIC | Nigeria | ||
| EL | ANK | Air Nippon | ANK AIR | Japan | merged into All Nippon Airways, ICAO code no longer allocated |
| YW | ANE | Air Nostrum | AIR NOSTRUM | Spain | |
| PX | ANG | Air Niugini | NIUGINI | Papua New Guinea | |
| G9 | ABY | Air Arabia | ARABIA | United Arab Emirates | |
| AC | ACA | Air Canada | AIR CANADA | Canada | |
| AP | LAV | AlbaStar | ALBASTAR | Spain | |
| E9 | MHS | Air Memphis | AIR MEMPHIS | Egypt | defunct |
| XT | AXL | Air Exel | EXEL COMMUTER | Netherlands | defunct |
| AZF | Air Zermatt AG | AIR ZERMATT | Switzerland | ||
| UM | AZW | Air Zimbabwe | AIR ZIMBABWE | Zimbabwe | |
| MHU | Air Memphis | MEPHIS UGANDA | Uganda | ||
| MKH | Air Marrakech Service | AIR MARRAKECH | Morocco | ||
| AZX | Air Max Africa | AZIMA | Gabon | defunct | |
| S2 | RSH | Air Sahara | SAHARA | India | renamed to Jetlite |
| ATA | Air Transport Association | United States | |||
| TC | ATC | Air Tanzania | TANZANIA | Tanzania | |
| XAC | Air Charter World | United States | |||
| 2J | VBW | Air Burkina | BURKINA | Burkina Faso | |
| ATH | Air Travel Corp. | AIR TRAVEL | United States | ||
| KM | AMC | Air Malta | AIR MALTA | Malta | |
| YT | TGA | Air Togo | AIR TOGO | Togo | defunct |
| ASJ | Air Satellite | SATELLITE | Canada | defunct | |
| ASN | Air and Sea Transport | Russia | |||
| ASS | Air Class, S.A. de C.V. | AIR CLASS | Mexico | ||
| NPL | Air Nepal International | AIR NEPAL | Nepal | defunct | |
| NPR | Air Napier | New Zealand | defunct | ||
| WAM | Air Taxi & Cargo | TAXI CARGO | Sudan | ||
| RSM | Air Somalia | AIR SOMALIA | Somali Republic | ||
| AWZ | AirWest | Sudan | |||
| G4 | AAY | Allegiant Air | ALLEGIANT | United States | |
| AAZ | Angus Aviation | ANGUS | Canada | defunct | |
| ABA | Artem-Avia | ARTEM-AVIA | Ukraine | defunct | |
| ABB | African Business and Transportations | AFRICAN BUSINESS | Democratic Republic of the Congo | ||
| ABF | Aerial Oy | SKYWINGS | Finland | ||
| ABK | Alberta Citylink | ALBERTA CITYLINK | Canada | defunct, ICAO code no longer allocated | |
| ABO | APSA Colombia | AEROEXPRESO | Colombia | aka Aeroexpreso Bogota | |
| O4 | ABV | Antrak Air | ANTRAK | Ghana | |
| GB | ABX | Airborne Express | ABEX | United States | August 14, 2003 merged into DHL |
| ABZ | ATA Brasil | ATA-BRAZIL | Brazil | defunct | |
| ACC | Avcard Services | United Kingdom | ICAO code no longer allocated | ||
| ACY | Atlas Cargo Airlines | ATLAS CARGOLINES | Morocco | ||
| ADA | Airservices Australia | AUSCAL | Australia | Flight Inspection Unit | |
| 8T | TID | Air Tindi | TINDI | Canada | |
| ADB | Antonov Airlines | ANTONOV BUREAU | Ukraine | Antonov Design Bureau | |
| ADG | Aerea Flying Training Organization | AEREA TRAINING | Spain | ||
| ADI | Audeli Air | AUDELI | Spain | ||
| ADL | Aero Dynamics | COTSWOLD | United Kingdom | ||
| ADN | Aero-Dienst | AERODIENST | Germany | ||
| ADP | Aerodiplomatic | AERODIPLOMATIC | Mexico | ||
| 3L | ADY | Air Arabia Abu Dhabi | Nawras [6][7] | United Arab Emirates | |
| ADQ | Avion Taxi | AIR DATA | Canada | 2695731 Canada Inc. | |
| ADS | Aviones de Sonora | SONORAV | Mexico | ||
| ADU | Airdeal Oy | AIRDEAL | Finland | ||
| EM* | AEB | Aero Benin | AEROBEN | Benin | defunct |
| AEC | Aerocésar | AEROCESAR | Colombia | defunct; aka Aerovías del César | |
| AED | Aerotrans Airlines | Russia | defunct | ||
| ADX | Anderson Aviation | ANDAX | United States | ||
| AEI | Aeroexpreso Interamericano | INTERAM | Colombia | defunct | |
| AEJ | Air Express | KHAKI EXPRESS | Tanzania | ||
| AEK | Aerocon | AEROCON | Bolivia | ||
| AEM | Aero Madrid | AEROMADRID | Spain | ||
| KD | AEN | Air Enterprise | AIR ENTERPRISE | France | defunct |
| AEO | Aeroservicios Ejecutivos Del Occidente | AERO OCCIDENTE | Mexico | ||
| AEP | Aerotec Escuela de Pilotos | AEROTEC | Spain | ||
| AX | AAC | AmericanConnection[8] | CONNECT AMERICA | United States | defunct |
| AN | AAA | Ansett Australia | ANSETT | Australia | defunct |
| AAC | Army Air Corps | ARMYAIR | United Kingdom | ||
| 5W | AEU | Astraeus | FLYSTAR | United Kingdom | defunct, ICAO code no longer allocated |
| AEV | Aeroventas | AEROVENTAS | Mexico | ||
| VV | AEW | Aerosvit Airlines | AEROSVIT | Ukraine | defunct |
| AEX | Airway Express | AVCO | United States | ICAO code no longer allocated | |
| AEZ | Aerial Transit | AERIAL TRANZ | United States | ||
| AFA | Alfa Air | BLUE ALFA | Czech Republic | ||
| WK | AFB | American Falcon | AMERICAN FALCON | Argentina | defunct |
| UTY | Alliance Airlines | UNITY | Australia | ||
| UVS | Air Universal | UNI-LEONE | Sierra Leone | defunct | |
| UVT | Auvia Air | AUVIA | Indonesia | ||
| AFC | African West Air | AFRICAN WEST | Senegal | ||
| AFE | Airfast Indonesia | AIRFAST | Indonesia | ||
| FG | AFG | Ariana Afghan Airlines | ARIANA | Afghanistan | |
| RV* | AFI | Africaone | AFRICAWORLD | The Gambia | |
| Y2 | AFJ | Alliance Air | JAMBO | Uganda | Ceased operations 08/10/2000 |
| AFK | Africa Air Links | AFRICA LINKS | Sierra Leone | ||
| AFO | Aero Empresa Mexicana | AERO EMPRESA | Mexico | ||
| AFQ | Alba Servizi Aerotrasporti | ALBA | Italy | ||
| 5Z | AFX | Airfreight Express | United Kingdom | Ceased operations 08/03/2002 | |
| AFY | Africa Chartered Services | AFRICA CHARTERED | Nigeria | ||
| AFZ | Africa Freight Services | AFREIGHT | Zambia | ||
| AGA | Aeronaves Del Centro | Venezuela | |||
| AGC | Arab Agricultural Aviation Company | AGRICO | Egypt | ||
| AGF | Atlantic Gulf Airlines | ATLANTIC GULF | United States | defunct | |
| 5D | SLI | Aeroméxico Connect | COSTERA | Mexico | |
| AGG | Algoma Airways | ALGOMA | Canada | ICAO code no longer allocated | |
| AGH | Altagna | ALTAGNA | France | ||
| AGO | Angola Air Charter | ANGOLA CHARTER | Angola | ||
| AGP | AERFI Group | AIR TARA | Ireland | ||
| 1A | AGT | Amadeus IT Group | AMADEUS | Spain | |
| AGU | Angara Airlines | SARMA | Russia | ||
| AGW | Aero Gambia | AERO GAMBIA | Gambia | defunct, ICAO code no longer allocated | |
| JJ | AGX | Aviogenex | GENEX | Serbia | defunct |
| BLR | Atlantic Coast Airlines | BLUE RIDGE | United States | defunct | |
| BLZ | Aero Barloz | AEROLOZ | Mexico | ||
| PL | PLI | Aeroperú | Aeroperu | Peru | defunct |
| 8A | BMM | Atlas Blue | ATLAS BLUE | Morocco | defunct |
| BNB | Aero Banobras | AEROBANOBRAS | Mexico | ||
| AGY | Aero Flight Service | FLIGHT GROUP | United States | ||
| AGZ | Agrolet-Mci | AGROLET | Slovakia | ||
| GD | AHA | Air Alpha Greenland | AIR ALPHA | Denmark | sold to Air Greenland |
| AHC | Azal Avia Cargo | AZALAVIACARGO | Azerbaijan | Cargo Airline of the State Concern Azerbaijan Hava | |
| AHE | Airport Helicopter Basel, Muller & Co. | AIRPORT HELICOPTER | Switzerland | ||
| CJE | Aeroservices Corporate | BIRD JET | France | ||
| AHF | Aspen Helicopters | ASPEN | United States | ||
| AHG | Aerochago Airlines | AEROCHAGO | Dominican Republic | defunct | |
| AHH | Airplanes Holdings | AIRHOLD | Ireland | ||
| AHP | Aerochiapas | AEROCHIAPAS | Mexico | ||
| HT | AHW | Aeromist-Kharkiv | AEROMIST | Ukraine | defunct |
| J2 | AHY | Azerbaijan Airlines | AZAL | Azerbaijan | |
| U3 | AIA | Avies | AVIES | Estonia | |
| 4Y | AIB | Airbus Industrie | AIRBUS INDUSTRIE | France | |
| KJ | AIH | Air Incheon | AIR INCHEON | South Korea | |
| RS | ASV | Air Seoul | AIR SEOUL | South Korea | |
| AIK | African Airlines International Limited | AFRICAN AIRLINES | Kenya | ||
| AIN | African International Airways | FLY CARGO | Eswatini | ||
| 5A | AIP | Alpine Air Express | ALPINE AIR | United States | |
| AIU | Alicante Internacional Airlines | ALIA | Spain | ||
| ED* | ABQ | Airblue | PAKBLUE | Pakistan | |
| THM | Airmark Aviation | THAI AIRMARK | Thailand | ||
| AIR | Airlift International | AIRLIFT | United States | defunct | |
| AIT | Airest | AIREST CARGO | Estonia | ||
| AIV | Airvias S/A Linhas Aéreas | AIRVIAS | Brazil | ||
| W4 | BES | Aero Services Executive | BIRD EXPRESS | France | |
| AIW | Atlantic Island Airways | TARTAN | Canada | ||
| AIX | Aircruising Australia | CRUISER | Australia | ||
| AIY | Aircrew Check and Training Australia | AIRCREW | Australia | ||
| IZ | AIZ | Arkia Israel Airlines | ARKIA | Israel | |
| AJA | Afghan Jet International Airlines | AFGHAN JET | Afghanistan | ||
| AJB | Aero JBR | AERO JBR | Mexico | ||
| AJE | Aero Jet Express | JET EXPRESS | Mexico | defunct | |
| AJI | Ameristar Jet Charter | AMERISTAR | United States | ||
| AJK | Allied Air | BAMBI | Nigeria | ||
| AJO | Aero Ejecutivo | AEROEXO | Mexico | defunct | |
| AJS | Aeroejecutivos Colombia | AEROEJECUTIVOS | Colombia | Aeroejecutivos Aeroservicios Ejecutivos | |
| M6 | AJT | Amerijet International | AMERIJET | United States | |
| AJV | ANA & JP Express | AYJAY CARGO | Japan | merged into Air Japan | |
| AJW | Alpha Jet International | ALPHAJET | United States | ||
| AJY | AJet | AYJET | Cyprus | defunct, ICAO code no longer allocated | |
| AKB | Aktjubavia | KARAB | Kazakhstan | ||
| AKC | Arca Aerovías Colombianas Ltda. | ARCA | Colombia | ||
| AKF | Anikay Air Company | ANIKAY | Kyrgyzstan | ||
| AKH | Akhal | AKHAL | Turkmenistan | ||
| MNI | Aeromilenio | AEROMIL | Mexico | ||
| AKK | Aklak Air | AKLAK | Canada | ||
| 4A | AKL | Air Kiribati | KIRIBATI | Kiribati | |
| AKN | Alkan Air | ALKAN AIR | Canada | ||
| AKW | Angkor Airways | ANGKORWAYS | Cambodia | defunct | |
| AKZ | AK Navigator LLC | ABSOLUTE | Kazakhstan | ICAO code no longer allocated | |
| ALB | Aero Albatros | ALBATROS | Mexico | ||
| ALD | Albion Aviation | ALBION | United Kingdom | ||
| ALE | Aeroalas Colombia | AEROALAS | Colombia | defunct | |
| ALF | Allied Command Europe (Mobile Force) | ACEFORCE | Belgium | ||
| FYS | American Flyers | AMERICAN FLYERS | United States | ||
| DFA | Aero Coach Aviation | AERO COACH | United States | ||
| EV | ASQ | Atlantic Southeast Airlines | ACEY | United States | Merged into ExpressJet Airlines |
| ALG | Air Logistics | AIRLOG | United States | ||
| ALL | Aerovallarta | VALLARTA | Mexico | ||
| HP | AWE | America West Airlines | CACTUS | United States | Merged with US Airways |
| 6R | TNO | Aerotransporte de Carga Union | AEROUNION | Mexico | |
| TND | Aero Taxis Cessna | TAXIS CESSNA | Mexico | ||
| TMP | Arizona Express Airlines | TEMPE | United States | ||
| ALO | Allegheny Commuter Airlines | ALLEGHENY | United States | US Airways Express | |
| ALP | Allpoints Jet | ALLPOINTS | China | ||
| ALP | Alpliner AG | ALPINER | Switzerland | Code now allocated to another user | |
| ALQ | Altair Aviation (1986) | ALTAIR | Canada | ||
| VH | ALV | Aeropostal Alas de Venezuela | AEROPOSTAL | Venezuela | |
| ALW | Alas Nacionales, S.A. | ALNACIONAL | Dominican Republic | ||
| ALY | Alyeska Air Service | ALYESKA | United States | ||
| ALZ | Alta Flights (Charters) Ltd. | Canada | |||
| AMA | ATMA | ADIK | Kazakhstan | ||
| AMD | Aerolíneas Medellín | AEROLINEAS MEDELLIN | Colombia | defunct | |
| AMF | Ameriflight | AMFLIGHT | United States | ||
| AMH | Alan Mann Helicopters Ltd. | MANN | United Kingdom | ICAO code no longer allocated | |
| AMJ | Aviation Amos | AVIATION AMOS | Canada | ||
| AMK | Amerer Air | AMER AIR | Austria | ||
| AMM | Aeroputul International Marculesti | AEROM | Moldova | ||
| DP | AMM | Air 2000 | JETSET | United Kingdom | defunct |
| AMP | Aero Transporte S.A. (ATSA) | ATSA | Peru | ||
| AMQ | Aeromedicare Ltd. | LIFELINE | United Kingdom | No longer current | |
| AMQ | Aircraft Management and Consulting | AMEX | Poland | ||
| TZ | AMT | ATA Airlines | AMTRAN | United States | defunct |
| YJ | AMV | AMC Airlines | AMC AIRLINES | Egypt | Aircraft Maintenance Company |
| AM | AMX | Aeroméxico | AEROMEXICO | Mexico | |
| AMZ | Amiya Airline | AMIYA AIR | Nigeria | ||
| ANC | Anglo Cargo | ANGLO | United Kingdom | Defunct, ICAO code no longer allocated | |
| BRP | AeroBratsk | AEROBRA | Russia | ||
| ANH | Alajnihah for Air Transport | ALAJNIHAH | Libya | ||
| ANM | Aerotransportacion de Norteamerica | NORAM | Mexico | ||
| ANM | Antares Airtransport, Maintenance & Service GmbH | ANTARES | Germany | ICAO Code now allocated to another user | |
| TL | ANO | Airnorth | TOPEND | Australia | |
| ANQ | Aerolínea de Antioquia | ANTIOQUIA | Colombia | ||
| OY | ANS | Andes Líneas Aéreas | AEROANDES | Argentina | |
| IW | AOM | AOM French Airlines | French Lines | France | defunct |
| ANW | Aviación Del Noroeste, S.A. de C.V. | AVINOR | Mexico | defunct | |
| SAP | Avia Jaynar | TOBOL | Kazakhstan | ||
| EMS | Aero Servicios Empresariales | SERVIEMPRESARIAL | Mexico | ||
| AOA | Alcon Servicios Aéreos, S.A. de C.V. | ALCON | Mexico | ||
| J6 | AOC | AVCOM | AERO AVCOM | Russia | |
| AOD | Aero Vodochody | AERO CZECH | Czech Republic | ||
| AOF | Atair Pty Ltd. | ATAIR | South Africa | ||
| 2D | AOG | Aero VIP | AVIP | Argentina | defunct |
| MUN | Aeromundo Ejecutivo | AEROMUNDO | Mexico | ||
| MUR | Aerolínea Muri | MURI | Mexico | ||
| AOI | Astoria, Inc. | ASTORIA | Canada | defunct | |
| NRO | Aero Rent JSC | AEROMASTER | Russia | defunct | |
| NRP | Aeronord-Grup | AERONORD | Moldova | ||
| AOK | Aeroatlantico Colombia | Colombia | defunct | ||
| AOL | Angkor Airlines | ANGKOR AIR | Cambodia | defunct | |
| AON | Aero Entreprise | AERO ENTERPRISE | France | ||
| AOO | As, Opened Joint Stock Company | COMPANY AS | Ukraine | ||
| AOP | Aeropiloto | AEROPILOTO | Portugal | ||
| VB | VIV | Aeroenlaces Nacionales | AEROENLACES | Mexico | Former ICAO code: AEN |
| VIZ | Aerovis Airlines | AEROVIZ | Ukraine | ||
| VJE | AvJet Routing | United Arab Emirates | |||
| VGF | Aerovista Gulf Express | VISTA GULF | United Arab Emirates | ||
| VER | Almaver | ALMAVER | Mexico | ||
| AOR | Afro International Ent. Limited | INTER-AFRO | Nigeria | ||
| SMX | Alitalia Express | ALIEXPRESS | Italy | ||
| OE | AOT | Asia Overnight Express | ASIA OVERNIGHT | Philippines | |
| AOV | Aero Vision | AEROVISION | France | ||
| AOX | Aerotaxi Del Valle | AEROVALLE | Colombia | ||
| APC | Airpac Airlines, Inc. | AIRPAC | United States | ||
| SVM | Aeroservicios Monterrey | SERVIMONTE | Mexico | ||
| APF | Amapola Flyg AB | AMAPOLA | Sweden | ||
| APH | Alpha Aviation, Inc. | AIRFLIGHT | United States | ||
| API | ASA Pesada, Lda. | ASA PESADA | Angola | ||
| APJ | Peach Aviation | AIR PEACH | Japan | ||
| PET | Aerotransporte Petrolero | AEROPETRO | Colombia | ||
| GV | ARF | Aero Flight | Aero Fox | Germany | defunct |
| BKL | Aircompany Barcol | BARCOL | Russia | ||
| BLA | All Charter Limited | ALL CHARTER | United Kingdom | ICAO code no longer allocated | |
| APL | Appalachian Flying Service, Inc. | APPALACHIAN | United States | ||
| APM | Airpac, Inc. | ALASKA PACIFIC | United States | ||
| APO | Aeropro | AEROPRO | Canada | defunct | |
| APP | AlpAvia d.o.o. | ALPAVIA | Slovenia | ||
| APQ | Aspen Aviation | ASPEN BASE | United States | ||
| APU | Aeropuma, S.A. | AEROPUMA | El Salvador | ||
| JW | APW | Arrow Air | BIG A | United States | defunct |
| APX | Apex Air Cargo | PARCEL EXPRESS | United States | ||
| APY | APA Internacional | APA INTERNACIONAL | Dominican Republic | ||
| AQA | Aeroatlas, S.A. | ATCO | Colombia | ||
| AQL | Aquila Air Ltd. | AQUILA | Canada | ||
| AQO | Aluminum Company Of America | ALCOA SHUTTLE | United States | Alcoa Aircraft Operations | |
| AQT | Avioquintana | AVIOQUINTANA | Mexico | ||
| AQU | AirQuarius Aviation | QUARIUS | South Africa | defunct | |
| AQZ | Aerodyne Charter Company | QUANZA | United States | ||
| ARA | Arik Air | ARIK AIR | Nigeria | ||
| ARB | Avia Air N.V. | AVIAIR | Aruba | ||
| 2B | AWT | Albawings | ALBAWINGS | Albania | |
| 4C | ARE | Aires, Aerovías de Integración Regional, S.A. | AIRES | Colombia | renamed to LAN Colombia |
| AR | ARG | Aerolíneas Argentinas | ARGENTINA | Argentina | |
| ARH | Arrowhead Airways | ARROWHEAD | United States | ||
| ARI | Aero Vics | AEROVICS | Mexico | ||
| SUN | Antillana De Navegación Aérea | Dominican Republic | |||
| SUO | Aeroservicios De San Luis | SERVICIO SANLUIS | Mexico | ||
| SUP | Aerosuper | AEROSUPER | Mexico | ||
| ARK | Aero Link Air Services S.L. | LINK SERVICE | Spain | ||
| ARL | Airlec - Air Aquitaine Transport | AIRLEC | France | ||
| ARM | Aeromarket Express | AMEX | Spain | defunct | |
| ARO | Arrow Aviation Ltd. | ARROW | Canada | defunct | |
| KLD | Air Klaipėda | AIR KLAIPEDA | Lithuania | ||
| ARQ | Armstrong Air, Inc. | ARMSTRONG | Canada | ||
| ARS | Aeromet Servicios | METSERVICE | Chile | ||
| ART | Aerotal Aerolíneas Territoriales de Colombia Ltda. | AEROTAL | Colombia | defunct | |
| ARV | Aravco Ltd. | ARAVCO | United Kingdom | ||
| ARW | Aria | ARIABIRD | France | ||
| OST | Airline Alania | ALANIA | Russia | ||
| HUC | Aerolíneas de Techuacán | LINEAS TEHUACAN | Mexico | ||
| HUT | Aerotransportes Huitzilin | AEROHUITZILIN | Mexico | ||
| HUY | Aero Transportes Del Humaya | AERO HUMAYA | Mexico | ||
| ARY | Argosy Airways | GOSEY | United States | ||
| AS | ASA | Alaska Airlines, Inc. | ALASKA | United States | |
| PL | ASE | Airstars | MOROZOV | Russia | defunct |
| ASF | Air Schefferville, Inc. | SCHEFF | Canada | ||
| ASG | African Star Airways (PTY) Ltd. | AFRICAN STAR | South Africa | ||
| ASI | Aerosun International, Inc. | AEROSUN | United States | ||
| ASM | Awesome Flight Services (PTY) Ltd. | AWESOME | South Africa | ||
| ASO | Aero Slovakia | AERO NITRA | Slovakia | ||
| ASP | Airsprint | AIRSPRINT | Canada | ||
| ASR | All Star Airlines, Inc. | ALL STAR | United States | ||
| AST | Aerolíneas Del Oeste | AEROESTE | Mexico | ||
| WAP | Arrow Panama | ARROW PANAMA | Panama | ||
| ASV | Astravia-Bissau Air Transports Ltd. | ASTRAVIA | Guinea-Bissau | ||
| OB | ASZ | Astrakhan Airlines | AIR ASTRAKHAN | Russia | defunct |
| ATB | Atlantair Ltd. | STARLITE | Canada | ||
| ATD | Aerotours Dominicana | AEROTOURS | Dominican Republic | ||
| ATE | Atlantis Transportation Services, Ltd. | ATLANTIS CANADA | Canada | ||
| ATG | Aerotranscargo[9] | MOLDCARGO | Moldova | ||
| HC | ATI | Aero-Tropics Air Services | AEROTROPICS | Australia | defunct |
| ATK | AeroTACA | AEROTACA | Colombia | defunct, Aerotaxi Casanare | |
| ATL | Atlas Air Service AG | AIR BREMEN | Germany | ||
| FO | ATM | Airlines of Tasmania | AIRTAS | Australia | |
| CPV | Air Corporate | AIRCORPORATE | Italy | ||
| ATP | ASTRAL Colombia - Aerotransportes Especiales Ltda. | ASTRAL | Colombia | ||
| FEO | Aeroferinco | FERINCO | Mexico | ||
| FES | Aero Taxis Y Servicios Alfe | AERO ALFE | Mexico | ||
| FFA | Avialesookhrana | AVIALESOOKHRANA | Russia | ||
| FFB | Africair Service | FOXTROT FOXTROT | Senegal | ||
| ATR | Atlas Airlines | ATLAS-AIR | United States | ||
| ATT | Aer Turas | AERTURAS | Ireland | defunct | |
| ATU | Atlant Aerobatics Ltd. | ATLANT HUNGARY | Hungary | ||
| ATV | Avanti Air | AVANTI AIR | Germany | ||
| ATW | Aero Trades (Western) Ltd. | AERO TRADES | Canada | defunct, ICAO code no longer allocated | |
| OS | AUA | Austrian Airlines | AUSTRIAN | Austria | |
| IQ | AUB | Augsburg Airways | AUGSBURG-AIR | Germany | defunct |
| TUP | Aviastar-Tu | TUPOLEVAIR | Russia | ||
| RU | ABW | AirBridge Cargo | AIRBRIDGE CARGO | Russia | Former IATA: BO |
| TUR | ATUR | Ecuador | |||
| TXU | ATESA Aerotaxis Ecuatorianos | ATESA | Ecuador | ||
| TXX | Austin Express | COWBOY | United States | defunct | |
| AUD | Audi Air, Inc. | AUDI AIR | United States | ||
| AUF | Augusta Air Luftfahrtunternehmen | AUGUSTA | Germany | ||
| AUM | Air Atlantic Uruguay | ATLAMUR | Uruguay | ||
| AUN | Aviones Unidos | AVIONES UNIDOS | Mexico | ||
| AUP | Avia Business Group | Russia | |||
| SVE | Aero Servicios Expecializados | AEROESPECIAL | Mexico | ||
| GR | AUR | Aurigny Air Services | AYLINE | United Kingdom | |
| NO | AUS | Aus-Air | AUS-AIR | Australia | defunct |
| AU | AUT | Austral Líneas Aéreas | AUSTRAL | Argentina | |
| AUU | Aurora Aviation, Inc. | AURORA AIR | United States | ICAO code no longer allocated | |
| AUY | Aerolíneas Uruguayas, S.A. | AUSA | Uruguay | ||
| AVF | Aviair Aviation Ltd. | CARIBOO | Canada | ||
| AVH | AV8 Helicopters | KENT HELI | United Kingdom | ||
| AVJ | Avia Traffic Company | ATOMIC | Kyrgyzstan | ||
| AVK | AV8 Helicopters | AVIATE-COPTER | South Africa | ||
| AVM | Aviación Ejecutiva Mexicana, S.A. | AVEMEX | Mexico | ||
| AVO | Aviation at Work | AVIATION WORK | South Africa | ||
| AVP | Avcorp Registrations | AVCORP | United Kingdom | No longer used | |
| AVP | Aviacion Corporativa de Peubla | AVIA PUEBLA | Mexico | ||
| LFP | Alfa Aerospace | ALFA-SPACE | Australia | ||
| LFR | Atlantic Airfreight Aviation | LANFREIGHT | São Tomé and Príncipe | ||
| AVS | Avialsa T-35 | AVIALSA | Spain | ||
| AVT | Asia Avia Airlines | ASIAVIA | Indonesia | defunct | |
| AVU | Avia Sud Aérotaxi | AVIASUD | France | ||
| AVV | Airvantage Incorporated | AIRVANTAGE | United States | ||
| AVW | Aviator Airways | AVIATOR | Greece | ||
| AVX | Aviapaslauga | PASLAUGA | Lithuania | defunct | |
| YRG | Air Yugoslavia | YUGAIR | Serbia | defunct; operations continue under Jat Airways | |
| K8 | ZAK | Airlink Zambia | Zambia | Zambia Skyways Limited | |
| ZZM | Agence Nationale des Aerodromes et de la Meteorologie (ANAM) | Ivory Coast | |||
| 4Y | BGA | Airbus Transport International | BELUGA | France | |
| B9 | BGD | Air Bangladesh | AIR BANGLA | Bangladesh | defunct |
| BGF | Aviodetachment-28 | BULGARIAN | Bulgaria | ||
| BGG | Aero BG | AERO BG | Mexico | ||
| BHC | Aerotaxis De La Bahia | BAHIA | Mexico | ||
| BIV | Aviaservice | AVIASERVICE | Georgia | ||
| SZA | Aerolíneas de El Salvador | AESA | El Salvador | defunct | |
| AVY | Aerovaradero, S.A. | AEROVARADERO | Cuba | ||
| AWB | Airways International, Inc. | AIRNAT | United States | ||
| AWK | Airwork | AIRWORK | New Zealand | ||
| AWL | Australian Wetleasing | AUSSIEWORLD | Australia | ||
| AWO | Awood Air Ltd. | AWOOD AIR | Canada | ||
| AWR | Arctic Wings And Rotors Ltd. | ARCTIC WINGS | Canada | ||
| ISM | Auo Airclub AIST-M | STORK | Russia | ||
| AWS | Arab Wings | ARAB WINGS | Jordan | ||
| AWV | Airwave Transport, Inc. | AIRWAVE | Canada | ||
| AWY | Aeroway, S.L. | AEROWEE | Spain | ||
| AXH | Aeromexhaga | AEROMEXHAGA | Mexico | ||
| AXI | Aeron International Airlines, Inc. | AIR FREIGHTER | United States | ||
| AXK | African Express Airways | EXPRESS JET | Kenya | Former IATA code: QA; former ICAO code: AEK; former callsign: AFRICAN EXPRESS | |
| AK | AXM | AirAsia | RED CAP | Malaysia | ICAO code no longer allocated |
| D7 | XAX | AirAsia X | XANADU | Malaysia | |
| DJ | WAJ | AirAsia Japan | WING ASIA | Japan | defunct |
| I5 | IAD | AirAsia India | ARIYA | India | Founded 28. Mar 2013 |
| AXN | Alexandair | ALEXANDROS | Greece | defunct | |
| AXP | Aeromax | AEROMAX SPAIN | Spain | ||
| BNI | Alberni Airways | ALBERNI | Canada | ||
| BNZ | Aerolíneas Bonanza | AERO BONANZA | Mexico | ||
| BOC | Aerobona | AEROBONA | Mexico | ||
| AXR | Axel Rent, S.A. | RENTAXEL | Mexico | ||
| AXS | Altus Airlines | ALTUS | United States | ||
| AXV | Aviaxess | AXAVIA | France | ||
| AXX | Avioimpex A.D.p.o. | IMPEX | Macedonia | defunct | |
| 6V | AXY | Axis Airways | AXIS | France | defunct |
| AYD | Aladia Airlines | AIRLINES ALADIA | Mexico | defunct | |
| AYK | Aykavia Aircompany | Armenia | ICAO code no longer allocated | ||
| AYM | Airman, S.L. | AIRMAN | Spain | ||
| NPT | West Atlantic UK | NEPTUNE | United Kingdom | ||
| GBN | Atlantic Airlines | ATLANTIC GABON | Gabon | ||
| EX | BJK | Atlantic Airlines | BLACKJACK | United States | |
| HHA | Atlantic Airlines de Honduras | ATLANTIC HONDURAS | Honduras | defunct | |
| AYN | Atlantic Airlines, S.A. | ATLANTIC NICARAGUA | Nicaragua | ||
| AYS | Awsaj Aviation Services | Libya | ICAO code no longer allocated | ||
| AYT | Ayeet Aviation & Tourism | AYEET | Israel | ||
| 3G | AYZ | Atlant-Soyuz Airlines | ATLANT-SOYUZ | Russia | defunct |
| AZ | AZA | Alitalia | ALITALIA | Italy | defunct |
| ZE | AZE | Arcus-Air Logistic | ARCUS AIR | Germany | |
| A2 | AZI | Astra Airlines | ASTRA | Greece | |
| AZK | Azalhelikopter | AZALHELICOPTER | Azerbaijan | ||
| AZL | Africa One | SKY AFRICA | Zambia | defunct | |
| AZM | Aerocozumel | AEROCOZUMEL | Mexico | ||
| AZP | Arizona Pacific Airways | ARIZONA PACIFIC | United States | ||
| AZS | Aviacon Zitotrans Air Company | ZITOTRANS | Russia | ||
| AZT | Azimut, S.A. | AZIMUT | Spain | ||
| AZV | Azov Avia Airlines | AZOV AVIA | Ukraine | defunct, Asov-Avia, Aircompany | |
| MHC | Aero Jomacha | AERO JOMACHA | Mexico | ||
| AZY | Arizona Airways, Inc. | ARIZAIR | United States | ||
| AZZ | Azza Transport | AZZA TRANSPORT | Sudan | ||
| NAR | Air Continental Inc | NIGHT AIR | United States | ||
| NAU | Antanik-Air | ANTANIK | Ukraine | ||
| NER | Air Newark | NEWAIR | United States | ||
| NFF | Aircraft Support and Services | Lebanon | ICAO code no longer allocated | ||
| OBA | Aerobanana | AEROBANANA | Mexico | ||
| OBK | Amako Airlines | AMAKO AIR | Nigeria | ||
| R7 | OCA | Aserca Airlines | AROSCA | Venezuela | |
| NFS | Afrique Cargo Service Senegal | Senegal | defunct | ||
| NGC | Angoservice | ANGOSERVICE | Angola | ||
| NGE | Angel Airlines | ANGEL AIR | Thailand | defunct, ICAO code no longer allocated | |
| NGF | Angel Flight America | ANGEL FLIGHT | United States | Renamed Air Charity Network in 2014[4] | |
| OUL | Air Atonabee | CITY EXPRESS | Canada | defunct | |
| OVA | Aero Nova | AERONOVA | Spain | ||
| XPE | Amira Air | EXPERT | Austria | ||
| XSS | Aero Express Intercontinental | INTER EXPRESS | Mexico | ||
| TLR | Air Libya Tibesti | AIR LIBYA | Libya | ||
| OVC | Aerovic | Ecuador | |||
| RVE | Airventure | AIRVENTURE | Belgium | ||
| RVI | Aero Servicios | AERO SERVICIOS | Mexico | ||
| RVL | Airvallee | AIR VALLEE | Italy | ||
| OVE | Aeromover | AEROMOVER | Mexico | ||
| OVI | Aerovías Ejecutivas | VIAS EJECUTIVAS | Mexico | ||
| PTD | Aero Servicio Pity | PITY | Mexico | ||
| PTE | Aero Copter | AERO-COP | Mexico | ||
| PLL | Air Pal | AIRPAL | Spain | Escuela De Pilots | |
| PLM | Air Pullmantur | PULLMANTUR | Spain | ||
| RX | AEH | Aviaexpress | AVEX | Hungary | defunct |
| PSG | Aviones Para Servirle | SERVIAVIONES | Mexico | ||
| SLU | Avio Sluzba | AVIO SLUZBA | Serbia | ||
| SCU | Air Scorpio | SCORPIO UNIVERS | Bulgaria | ||
| SIP | Air Spirit | AIR SPIRIT | United States | ||
| BMV | Alatau Airlines | OLIGA | Kazakhstan | ||
| GUG | Aviateca | AVIATECA | Guatemala | ||
| PXX | Aroostook Aviation | PINE STATE | United States | ||
| PYC | Aeropycsa | AEROPYCSA | Mexico | ||
| PVK | Association of Private Pilots of Kazakhstan | BORIS | Kazakhstan | ICAO code no longer allocated | |
| BAS | Aero Services | AEROSERV | Barbados | ||
| BBT | Air Bashkortostan | AGYDAL | Russia | defunct | |
| MCY | Ambulance Air Africa | MERCY | South Africa | ||
| MQ | EGF | American Eagle Airlines | EAGLE FLIGHT | United States | Renamed Envoy Air, ICAO Code and Callsign withdrawn in 2014 |
| PUE | Aeropuelche | PUELCHE | Chile | ||
| PUT | Aeroput | Serbia | defunct | ||
| ZS | AZI | Azzurra Air | AZZURRA | Italy | defunct |
| FF | Airshop | Netherlands | |||
| ML | ETC | African Transport Trading and Investment Company | TRANATTICO | Sudan | |
| XCT | Aero Costa Taxi Aéreo | AEROCOSTAXI | Mexico | ||
| VRO | Aerovitro | AEROVITRO | Mexico | ||
| VRI | Aerotaxi Villa Rica | VILLARICA | Mexico | ||
| VEG | Aerovega | AEROVEGA | Mexico | ||
| VVG | Aerovilla | AEROVILLA | Colombia | ||
| VLR | Aerolíneas Villaverde | VILLAVERDE | Mexico | ||
| WI | WIL | Aero Air | WILLIAMETTE | United States | |
| VEJ | Aero Ejecutivos | VENEJECUTIV | Venezuela | ||
| WAB | Aero Industries Inc | WABASH | United States | ||
| VNG | Aero Servicios Vanguardia | VANGUARDIA | Mexico | ||
| VAD | Aero Taxi Los Valles | VALLES | Spain | ||
| VMR | Aero Vilamoura | AERO VILAMOURA | Portugal | ICAO code no longer allocated | |
| VLS | Aero Virel | VIREL | Mexico | ||
| XAA | Aeronautical Radio Inc | ROCKFISH|United States | |||
| VUO | Aerovuelox | AEROVUELOX | Mexico | ||
| VTM | Aeronaves TSM | AERONAVES TSM | Mexico | ||
| VU | VUN | Air Ivoire | AIRIVOIRE | Ivory Coast | defunct |
| BP | BOT | Air Botswana | BOTSWANA | Botswana | |
| XPR | Air-Rep | United States | |||
| XLL | Air Excel | TINGA-TINGA | Tanzania | ||
| VAE | Air Evans | AIR-EVANS | Spain | Ecuela de Pilotos Privados | |
| WHY | Air Sorel | AIR SOREL | Canada | ||
| WDR | Air Net Private Charter | WIND RIDER | United States | ||
| XEC | Air Executive Charter | Germany | |||
| GS | UPA | Air Foyle | FOYLE | United Kingdom | defunct, ICAO code no longer allocated |
| VTY | Air Midwest (Nigeria) | VICTORY | Nigeria | ||
| VT | VTA | Air Tahiti | AIR TAHITI | French Polynesia | |
| 3N | URG | Air Urga | URGA | Ukraine | |
| VDR | Air Vardar | VARDAR | Macedonia | ICAO code in use by another company, call sign no longer allocated | |
| VL | VIM | Air VIA | CRYSTAL | Bulgaria | |
| WLR | Air Walser | AIRWALSER | Italy | ||
| URA | Aircompany Rosavia | ROSAVIA | Ukraine | ||
| XLB | Aircraft Performance Group | United States | |||
| WLA | Airwaves Airlink | AIRLIMITED | Zambia | ||
| XFX | Airways Corporation of New Zealand | AIRCORP | New Zealand | ||
| WAY | Airways | GARONNE | France | ||
| WGS | Airwings oy | AIRWINGS | Finland | ||
| XAK | Airkenya | SUNEXPRESS | Kenya | ||
| WPK | Air-Lift Associates | WOLFPACK | United States | ||
| VAB | Airtrans Ltd | Russia | |||
| URP | ARP 410 Airlines | AIR-ARP | Ukraine | ||
| WPR | Auckland Regional Rescue Helicopter Trust | WESTPAC RESCUE | New Zealand | ||
| URR | Aurora Airlines | AIR AURORA | Slovenia | defunct, ICAO code no longer allocated | |
| UST | Austro Aéreo | AUSTRO AEREO | Ecuador | ||
| WLT | Aviation Partners | WINGLET | United States | ||
| VLV | Avialift Vladivostok | VLADLIFT | Russia | ||
| VME | Aviación Comercial de América | AVIAMERICA | Mexico | ||
| VVA | Aviast Air | IALSI | Russia | defunct | |
| WLV | Aviation North | WOLVERINE | United States | ||
| FK | WTA | Africa West | WEST TOGO | Togo | |
| VNT | Avient Air Zambia | AVIENT | Zambia | ||
| VZR | Aviazur | IAZUR | France | ||
| VID | Aviaprad | AVIAPRAD | Russia | defunct | |
| G2 | VXG | Avirex | AVIREX-GABON | Gabon | |
| VXX | Aviaexpress Aircompany | EXPRESSAVIA | Ukraine | ||
| XAM | AMR Services Corporation | ALLIANCE | United States | ||
| XAO | Airline Operations Services | United States | |||
| VAZ | Airlines 400 | REMONT AIR | Russia | ||
| V8 | VAS | ATRAN Cargo Airlines | ATRAN | Russian Federation | |
| VAM | Ameravia | AMERAVIA | Uruguay | ||
| K6 | KHV | Angkor Air | AIR ANGKOR | Cambodia | |
| VBC | AVB-2004 Ltd | AIR VICTOR | Bulgaria | ||
| XKX | ASECNA | France | |||
| XAT | AT and T Aviation Division | United States | |||
| CAJ | Air Caraibes Atlantique | CAR LINE | France | ||
| CAO | Air China Cargo | AIRCHINA FREIGHT | China | ||
| CBE | Aerovías Caribe | AEROCARIBE | Mexico | ||
| CBO | Aerotaxi del Cabo | TAXI CABO | Mexico | ||
| CBS | Air Columbus | AIR COLUMBUS | Ukraine | ||
| CBV | Aereo Cabo | CABOAEREO | Mexico | ||
| CA | CCA | Air China | AIR CHINA | China | |
| CDA | Aerocardal | CARDAL | Chile | ||
| Q6 | CDP | Aero Condor Peru | CONDOR-PERU | Peru | |
| CDU | Aerotrans | Russia | |||
| CDV | Airline Skol | SKOL | Russia | ||
| CFF | Aerofan | AEROFAN | Spain | ||
| CFR | Africa One | Democratic Republic of the Congo | defunct | ||
| CFV | Aero Calafia | CALAFIA | Mexico | ||
| CGB | Air Cargo Belize | CARGO BELIZE | Belize | ||
| CGV | Aero Clube Do Algarve | CLUBE ALGARVE | Portugal | ||
| CGW | Air Great Wall | CHANGCHENG | China | defunct | |
| CHJ | Aircompany Chaika | AIR CHAIKA | Ukraine | ||
| CHR | Air Charter Services | ZAIRE CHARTER | Democratic Republic of the Congo | ||
| CHV | Air Charter Professionals | CHARTAIR | United States | ||
| CID | Asia Continental Airlines | ACID | Kazakhstan | defunct, ICAO code no longer allocated | |
| 5F | CIR | Arctic Circle Air Service | AIR ARCTIC | United States | defunct 2011 |
| CKL | Aviation Charter Services | CIRCLE CITY | United States | ||
| CLL | Aerovías Castillo | AEROCASTILLO | Mexico | ||
| CLP | Aero Club De Portugal | CLUB PORTUGAL | Portugal | ||
| CMF | Air Care Alliance | COMPASSION | United States | ||
| CNE | Air Toronto | CONNECTOR | Canada | ||
| CNH | Aquila Air | CHENANGO | United States | ||
| CNU | Air Consul | AIR CONSUL | Spain | ||
| CNX | AllCanada Express | CANEX | Canada | defunct | |
| CPF | Airtechservice | TECHSERVICE | Ukraine | defunct | |
| QC | CRD | Air Corridor | AIR CORRIDOR | Mozambique | defunct |
| NV | CRF | Air Central | AIR CENTRAL | Japan | Ceased operations 2010 |
| CRJ | Air Cruzal | AIR CRUZAL | Angola | ||
| CRP | Aerotransportes Corporativos | AEROTRANSCORP | Mexico | ||
| CRQ | Air Creebec | CREE | Canada | ||
| CTA | Aero Charter and Transport | CHAR-TRAN | United States | ||
| CTE | Air Tenglong | TENGLONG | China | ||
| CTR | Aerolíneas Centauro | CENTAURO | Mexico | ||
| CUO | Aerocuahonte | CUAHONTE | Mexico | ||
| CV | CVA | Air Chathams | CHATHAM | New Zealand | |
| CW | CWM | Air Marshall Islands | AIR MARSHALLS | Marshall Islands | |
| CWP | Australian Customs Service | COASTWATCH | Australia | ||
| CYL | Air One Cityliner | CITYLINER | Italy | ||
| CYO | Air Transport | COYOTE | United States | ||
| CYE | Aerocheyenne | AEROCHEYENNE | Mexico | ||
| AH | DAH | Air Algérie | AIR ALGERIE | Algeria | |
| DAP | Aerovías DAP | DAP | Chile | ||
| DBA | Air Alpha | DOUBLE-A | United States | ||
| DBD | Air Niagara Express | AIR NIAGARA | Canada | ||
| DEF | Aviation Defense Service | TIRPA | France | ||
| DEG | Air Service Groningen | DEGGER | Netherlands | ICAO code and call sign no longer allocated | |
| ER | DHL | Astar Air Cargo | D-H-L | United States | defunct, DHL |
| DHM | Archer Aviation | ARCHER | United Kingdom | ICAO code no longer allocated | |
| DIC | Aeromedica | AEROMEDICA | Mexico | ||
| DIN | Aerodin | AERODIN | Mexico | ||
| DJU | Air Djibouti | AIR DJIB | Djibouti | defunct | |
| EN | DLA | Air Dolomiti | DOLOMITI | Italy | |
| DLS | Aero Modelo | AEROMODELO | Mexico | ||
| DLU | Aerolíneas del Sur | DEL SUR | Chile | defunct | |
| DMC | Aerodinamica de Monterrey | DINAMICAMONT | Mexico | ||
| DMI | Aeroservicios Dinamicos | AERODINAMICO | Mexico | ||
| DML | Aerotaxis Dosmil | Mexico | |||
| DNA | Aerodespachos de El Salvador | AERODESPACHOS | El Salvador | ||
| DNC | Aerodynamics Málaga | FLYINGOLIVE | Spain | ||
| DNJ | Aerodynamics Incorporated | DYNAJET | United States | ||
| NM | DRD | Air Madrid | ALADA AIR | Spain | defunct |
| DRM | Airways Flight Training | DARTMOOR | United Kingdom | ||
| DRO | Aeronaves Del Noreste | AERONORESTE | Mexico | ||
| 6R | DRU | Alrosa Air Company | MIRNY | Russia | |
| DSK | Aero Algarve | SKYBANNER | Portugal | ICAO code no longer allocated | |
| DST | Aex Air | DESERT | United States | ||
| EAT | Air Transport | TRANS EUROPE | Slovakia | ||
| EE | EAY | Aero Airlines | REVAL | Estonia | defunct |
| EBC | Aero Ejecutivo De Baja California | CALIXJET | Mexico | ||
| 4F | ECE | Air City | AIRCITY | Germany | |
| ECG | Aero Ejecutivos RCG | EJECTUIVOS RCG | Mexico | ||
| ECL | Aeronáutica Castellana | AERO CASTELLANA | Spain | ||
| ECM | Aerolíneas Comerciales | AERO COMERCIALES | Mexico | ||
| EDA | Aerolineas Nacionales Del Ecuador | ANDES | Ecuador | defunct | |
| EET | Air Este | AESTE | Spain | ||
| EFC | Air Mana | FLIGHT TAXI | France | ||
| EJP | Aeroservicios Ejecutivos Corporativos | EJECCORPORATIVOS | Mexico | ||
| E8 | ELG | Alpi Eagles | ALPI EAGLES | Italy | defunct, ICAO code no longer allocated |
| ALX | ALPI Jets | ALPIJETS | Austria | ||
| END | Arrendadora y Transportadora Aérea | ARRENDADORA | Mexico | ||
| ENW | Aeronaves Del Noroeste | AERONOR | Spain | ||
| EOL | Airailes | EOLE | France | ||
| RF | EOK | Aero K | AEROHANKUK | South Korea | established in May 2016; commenced operations on 15 April 2021 |
| EOM | Aero Ermes | AERO ERMES | Mexico | ||
| EPL | Aero Transportes Empresariales | EMPRESARIALES | Mexico | ||
| EPE | Aero Empresarial | AEROEMPRESARIAL | Mexico | ||
| KY | EQL | Air São Tomé and Príncipe | EQUATORIAL | São Tomé and Príncipe | defunct |
| ERG | Avianergo | AVIANERGO | Russia | defunct | |
| ERI | Aero Servicios Regiomontanos | ASERGIO | Mexico | ||
| ERK | Aerosec | AEROSEC | Chile | ||
| ERM | Aeromaan | EOMAAN | Mexico | ||
| ESB | Aereosaba | AEREOSABA | Mexico | ||
| ESO | Avitat | United Kingdom | |||
| ESU | Aerolíneas Ejecutivas Del Sureste | ALESUR | Mexico | ||
| ESZ | Aeronáutica La Esperanza | ESPERANZA | Mexico | ||
| ETE | Aero Siete | AEROSIETE | Mexico | ||
| EUK | Air Atlanta Europe | SNOWBIRD | United Kingdom | defunct | |
| EVE | Air Evex | SUNBEAM | Germany | ||
| EVR | Aeronautical Academy of Europe | DIANA | Portugal | ||
| E2/E6 | EWE/EWL | Eurowings Europe | EUROPWINGS BLACK PEARL | Austria | |
| EXG | Air Exchange | EXCHANGE | United States | ||
| FAC | Atlantic Helicopters | FAROECOPTER | Denmark | ||
| FAG | Argentine Air Force | FUAER | Argentina | ||
| PC | FAJ | Air Fiji | FIJIAIR | Fiji | defunct |
| FAN | AF-Air International | FANBIRD | Angola | ||
| FBW | Aviation Data Systems | United States | |||
| FCI | Air Carriers | FAST CHECK | United States | ||
| FCO | Aerofrisco | AEROFRISCO | Mexico | ||
| FCU | Alfa 4 | Mexico | |||
| JH | FDA | Fuji Dream Airlines | FUJI DREAM | Japan | |
| FDS | African Medical and Research Foundation | FLYDOC | Kenya | ||
| FGT | Aero Freight | FREIAERO | Mexico | ||
| FIC | Aerosafin | AEROSAFIN | Mexico | ||
| OF | FIF | Air Finland | AIR FINLAND | Finland | |
| FII | Aerodata Flight Inspection | FLIGHT CHECKER | Germany | ICAO code no longer allocated | |
| FIX | Airfix Aviation | AIRFIX | Finland | ||
| FJ | FJI | Fiji Airways | PACIFIC | Fiji | |
| FLD | Air Falcon | Pakistan | |||
| RC | FLI | Atlantic Airways | FAROELINE | Faroe Islands | |
| FLP | Aeroclub Flaps | AEROCLUB FLAPS | Spain | defunct | |
| QH | FLZ | Aero Leasing | AIR FLORIDA | United States | dba Air Florida |
| FMT | Air Fret De Mauritanie | Mauritania | |||
| FNM | Avio Nord | Italy | |||
| FNO | Aeroflota Del Noroeste | RIAZOR | Spain | ||
| FNX | Aero Fenix | AERO FENIX | France | ICAO code no longer allocated | |
| FPY | African Company Airlines | AFRICOMPANY | Democratic Republic of the Congo | Defunct.[10] ICAO code in use by another company.[11] | |
| FRJ | Afrijet Airlines | AFRIJET | Nigeria | ||
| FRK | Afrika Aviation Handlers | AFRIFAST | Kenya | ||
| FRQ | Afrique Chart'air | CHARTER AFRIQUE | Cameroon | ||
| FRT | Aerofreight Airlines | Russia | |||
| FST | Aeros Limited | FAST TRACK | United Kingdom | ICAO code no longer allocated | |
| FTC | Air Affaires Tchad | AFFAIRES TCHAD | Chad | ||
| NY | FXI | Air Iceland | FAXI | Iceland | |
| 2P | GAP | Air Philippines | ORIENT PACIFIC | Philippines | |
| GAU | Aerogaucho | AEROGAUCHO | Uruguay | ||
| GBJ | Aero Business Charter | GLOBAL JET | Germany | ||
| GCF | Aeronor | AEROCARTO | Spain | ||
| GCK | Aerogem Cargo | AEROGEM | Ghana | defunct | |
| GFO | Aerovías del Golfo | AEROVIAS GOLFO | Mexico | ||
| GGL | Aeronáutica | GIRA GLOBO | Angola | ||
| ZX | GGN | Air Georgian | GEORGIAN | Canada | |
| GHL | Aviance UK | HANDLING | United Kingdom | Gatwick Handling | |
| GHN | Air Ghana | AIR GHANA | Ghana | ||
| GIL | African International Transport | AFRICAN TRANSPORT | Guinea | ||
| 2U | GIP | Air Guinee Express | FUTURE EXPRESS | Guinea | |
| GIZ | Africa Airlines | AFRILENS | Guinea | ||
| GLL | Air Gemini | TWINS | Angola | ||
| GLT | Aero Charter | GASLIGHT | United States | ||
| GME | Aguilas Mayas Internacional | MAYAN EAGLES | Guatemala | ||
| GMM | Aerotaxis Guamuchil | AEROGUAMUCHIL | Mexico | ||
| GMS | Aeroservicios Gama | SERVICIOS GAMA | Mexico | ||
| 0A | GNT | Amber Air | GINTA | Lithuania | |
| GOA | Alberta Government | ALBERTA | Canada | ||
| GRE | Air Scotland | GREECE AIRWAYS | Greece | ||
| DA | GRG | Air Georgia | AIR GEORGIA | Georgia | |
| GRI | Air Cargo Center | São Tomé and Príncipe | |||
| LL | GRO | Allegro | ALLEGRO | Mexico | defunct (IATA code reallocated) |
| GRR | Agroar - Trabalhos Aéreos | AGROAR | Portugal | ||
| GRX | Aircompany Grodno | GRODNO | Belarus | ||
| GSP | Airlift Alaska | GREEN SPEED | United States | ||
| GSV | Agrocentr-Avia | AGRAV | Kazakhstan | ||
| GTC | Altin Havayolu Tasimaciligi Turizm Ve Ticaret | GOLDEN WINGS | Turkey | ||
| 5Y | GTI | Atlas Air | GIANT | United States | |
| GTP | Aerotaxi Grupo Tampico | GRUPOTAMPICO | Mexico | ||
| GUA | Aerotaxis de Aguascalientes | AGUASCALIENTES | Mexico | ||
| GG | GUY | Air Guyane | GREEN BIRD | French Guiana | |
| GVI | Air Victoria Georgia | IRINA | Georgia | ||
| H9 | HAD | Air d'Ayiti | HAITI AVIA | Haiti | |
| GG | HAH | Air Comores International | AIR COMORES | Comoros | |
| HAT | Air Taxi | TAXI BIRD | France | ||
| HEI | Aerohein | AEROHEIN | Chile | ||
| HGH | Atlantic Air Lift | HIGHER | France | ||
| HID | Aviación Ejecutiva De Hildago | EJECUTIVA HIDALGO | Mexico | ||
| HJA | Air Haiti | AIRHAITI | Haiti | ||
| HD | HLN | Air Holland | ORANGE | Netherlands | defunct |
| HJT | Al Rais Cargo | AL-RAIS CARGO | United Arab Emirates | ||
| HKH | Air-Invest | HAWKHUNGARY | Hungary | ||
| HMA | Air Tahoma | TAHOMA | United States | ICAO code no longer allocated | |
| HMT | Air Nova | HAMILTON | United Kingdom | ICAO code no longer allocated | |
| HOM | Aero Homex | AERO HOMEX | Mexico | ||
| HPO | Almiron Aviation | ALMIRON | Uganda | ||
| HQO | Avinor | Norway | |||
| HYR | Airlink Airways | HIGHFLYER | Ireland | ||
| 8C | HZT | Air Horizon | HORIZON TOGO | Togo | |
| ICM | Air Inter Cameroun | INTER-CAMEROUN | Cameroon | ||
| IFI | Air Lift | HELLAS LIFT | Greece | ||
| IKM | Aero Survey | EASY SHUTTLE | Ghana | Callsign changed from GHANA SURVEY | |
| ILK | Aero Airline | ILEK | Kazakhstan | ||
| IME | Airtime Charters | AIRTIME | United Kingdom | ICAO code no longer allocated | |
| IMN | Aerotaxis Cimarron | TAXI CIMARRON | Mexico | ||
| INA | Aero Internacional | AERO-NACIONAL | Mexico | ||
| ING | Aeroingenieria | AEROINGE | Chile | defunct | |
| INO | Aeroservicios Intergrados de Norte | INTENOR | Mexico | ||
| IPL | Airpull Aviation | IPULL | Spain | ||
| IRD | Arvand Airlines | ARVAND | Iran | ||
| IRH | Atlas Aviation Group | ATLAS AVIA | Iran | ||
| IRW | Aram Airline | ARAM | Iran | ||
| IRX | Aria Tour | ARIA | Iran | ||
| ITE | Aerotaxi S.R.O. | AEROTAXI | Czech Republic | ||
| ITF | Avita-Servicos Aéreos | AIR AVITA | Angola | ||
| ITI | AirSwift | AIRSWIFT | Philippines | ||
| ITO | Aero Citro | AERO CITRO | Mexico | ||
| IVE | Air Executive | COMPANY EXEC | Spain | ||
| IWS | Aviainvest | Russia | |||
| W9 | JAB | Air Bagan | AIR BAGAN | Myanmar | |
| JAD | Aerojal | AEROJAL | Mexico | ||
| JAR | Airlink | AIRLINK | Austria | ||
| JEE | Ambjek Air Services | AMBJEK AIR | Nigeria | ||
| JKH | JETKONTOR AG | JETKONTOR | Germany | ||
| UTX | Avfinity | United States | |||
| JMR | Alexandair | ALEXANDAIR | Canada | ||
| JMX | Air Jamaica Express | JAMAICA EXPRESS | Jamaica | ||
| JOA | Air Swift Aviation | Australia | |||
| JOB | Aerojobeni | JOBENI | Mexico | ||
| IP | JOL | Atyrau Air Ways | EDIL | Kazakhstan | |
| JPR | Aerosmith Aviation | JASPER | United States | ICAO code no longer allocated | |
| JTS | Arrendamiento de Aviones Jets | AVIONESJETS | Mexico | ||
| JUA | Aero Juarez | JUAREZ | Mexico | ||
| QK | JZA | Air Canada Jazz | JAZZ | Canada | |
| KAA | Asia Aero Survey and Consulting Engineers | AASCO | Republic of Korea | ICAO code no longer allocated | |
| KAD | Air Kirovograd | AIR KIROVOGRAD | Ukraine | ||
| KAM | Air Mach | ICO-AIR | Italy | ||
| KAV | Air Kufra | AIRKUFRA | Libya | ||
| KEK | Arkhabay | ARKHABAY | Kazakhstan | ICAO code no longer allocated | |
| KFK | Aero Charter Krifka | KRIFKA AIR | Austria | ||
| KFT | Air Kraft Mir | AIR KRAFT MIR | Uzbekistan | ||
| KGD | Air Concorde | CONCORDE AIR | Bulgaria | ||
| KHH | Alexandria Airlines | Egypt | |||
| KIE | Afit | TWEETY | Germany | ||
| KKB | Air South | KHAKI BLUE | United States | ||
| KK | KKK | Atlasjet | ATLASJET | Turkey | |
| KLB | Air Mali International | TRANS MALI | Mali | ||
| KLZ | Aerokaluz | AEROKALUZ | Mexico | ||
| JS | KOR | Air Koryo | AIR KORYO | Democratic People's Republic of Korea | |
| KOY | Araiavia | ALEKS | Kazakhstan | ||
| KRE | AeroSucre | AEROSUCRE | Colombia | ||
| KRT | Air Kokshetau | KOKTA | Kazakhstan | ICAO code no longer allocated | |
| KSI | Air Kissari | KISSARI | Angola | ||
| KTN | Aeronavigaciya | AERONAVIGACIYA | Ukraine | ||
| KVR | Alliance Avia | KAVAIR | Kazakhstan | ||
| KYC | Av Atlantic | DOLPHIN | United States | ||
| KC | KZR | Air Astana | ASTANALINE | Kazakhstan | |
| LAG | Aviation Legacy | AVILEG | Gambia | ||
| Aerovías De Lagos | AEROLAGOS | Mexico | Was LAG | ||
| LV | LBC | Albanian Airlines | ALBANIAN | Albania | |
| LBI | Albisa | ALBISA | Mexico | ||
| LBW | Albatros Airways | ALBANWAYS | Albania | ||
| LDG | Aerolíneas Aéreas Ejecutivas De Durango | DURANGO | Mexico | ||
| 3S | BOX | Aerologic | GERMAN CARGO | Germany | |
| LDN | Al-Donas Airlines | ALDONAS AIR | Nigeria | ||
| QP | AKJ | Akasa Air | AKASA AIR | India | |
| LDR | Aero Lider | AEROLIDER | Mexico | ||
| LEM | Aleem | Egypt | |||
| LET | Aerolíneas Ejecutivas | MEXEJECUTIV | Mexico | ||
| H7 | LFA | Air Alfa | AIR ALFA | Turkey | |
| LFC | Aero Control Air | LIFE FLIGHT CANADA | Canada | defunct | |
| LGN | Aerolaguna | AEROLAGUNA | Mexico | ||
| LHR | Al Ahram Aviation | AL AHRAM | Egypt | ||
| D4 | LID | Alidaunia | ALIDA | Italy | |
| LIE | Al-Dawood Air | AL-DAWOOD AIR | Nigeria | ||
| LKP | American Aviation | LAKE POWELL | United States | ICAO code no longer allocated | |
| LKS | Airlink Solutions | AIRLIN | Spain | ||
| LKY | Air Solutions | LUCKY | United States | ||
| 9I | LLR | Air India Regional | ALLIED | India | |
| LMA | Aerolima | AEROLIMA | Mexico | ||
| LML | Alamia Air | ALAMIA AIR | Libya | ICAO code no longer allocated | |
| LMP | Air Plus Argentina | AIR FLIGHT | Argentina | ||
| LMT | Almaty Aviation | ALMATY | Kazakhstan | ||
| LMX | Aerolíneas Mexicanas J S | LINEAS MEXICANAS | Mexico | ||
| LMY | Air Almaty | AGLEB | Kazakhstan | ||
| LMZ | Air Almaty ZK | ALUNK | Kazakhstan | ||
| XL | LNE | Aerolane | AEROLANE | Ecuador | Líneas Aéreas Nacionales Del Ecuador |
| 4Z | LNK | Airlink | LINK | South Africa | |
| LNT | Aerolíneas Internacionales | LINEAINT | Mexico | ||
| LOK | Alok Air | ALOK AIR | Sudan | ||
| LOU | Air Saint Louis | AIR SAINTLOUIS | Senegal | ||
| FL | LPA | Air Leap | LEAP | Sweden | [12] |
| LPC | Alpine Aviation | NETSTAR | South Africa | ||
| A6 | LPV | Air Alps Aviation | ALPAV | Austria | |
| LRO | Alrosa-Avia | ALROSA | Russia | ||
| LRW | Al Rida Airways | AL RIDA | Mauritania | ||
| LSK | Aurela | AURELA | Lithuania | ||
| LSM | Aerobusinessservice | Russia | defunct | ||
| LSR | Alsair | ALSAIR | France | ||
| LTI | Aerotaxis Latinoamericanos | LATINO | Mexico | ||
| LUC | Albinati Aeronautics | ALBINATI | Switzerland | ||
| TD | LUR | Atlantis European Airways | ATLANTIS | Armenia | defunct |
| LVN | Aliven | ALIVEN | Italy | ||
| LVR | Aviavilsa | AVIAVILSA | Lithuania | ||
| L8 | LXG | Air Luxor GB | LUXOR GOLF | Guinea-Bissau | |
| LK | LXR | Air Luxor | AIRLUXOR | Portugal | ICAO code no longer allocated |
| LYT | Apatas Air | APATAS | Lithuania | ||
| LZP | Air Ban | DOC AIR | Bulgaria | ||
| LZR | Air Lazur | LAZUR BEE-GEE | Bulgaria | ||
| MAM | Aeródromo De La Mancha | AEROMAN | Spain | ||
| MK | MAU | Air Mauritius | AIRMAURITIUS | Mauritius | |
| MBA | Avag Air | AVAG AIR | Austria | ||
| MBB | Air Manas | AIR MANAS | Kyrgyzstan | ||
| MBC | Airjet Exploracao Aerea de Carga | MABECO | Angola | ||
| MBV | Aeriantur-M | AEREM | Moldova | defunct | |
| MCB | Air Mercia | WESTMID | United Kingdom | ||
| MCD | Air Medical | AIR MED | United Kingdom | ||
| MCO | Aerolíneas Marcos | MARCOS | Mexico | ||
| MDC | Atlantic Aero and Mid-Atlantic Freight | NIGHT SHIP | United States | ||
| MD | MDG | Air Madagascar | AIR MADAGASCAR | Madagascar | |
| MDX | Aerosud Charter | MEDAIR | South Africa | ||
| MEF | Air Meridan | EMPENNAGE | Nigeria | ||
| MFL | Aero McFly | MCFLY | Mexico | ||
| MGE | Asia Pacific Airlines | MAGELLAN | United States | ||
| MGS | Aeromagar | AEROMAGAR | Mexico | ||
| MIE | Aero Premier De Mexico | AEROPREMIER | Mexico | ||
| 9U | MLD | Air Moldova | AIR MOLDOVA | Moldova | |
| MLF | Amal Airlines | AMAL | Djibouti | ||
| L9 | MLI | Air Mali | AIR MALI | Mali | defunct |
| MLN | Air Madeleine | AIR MADELEINE | Canada | ||
| MMC | Aermarche | AERMARCHE | Italy | ||
| MMD | Air Alsie | MERMAID | Denmark | ||
| MMM | Aviation Company Meridian | AVIAMERIDIAN | Russia | ||
| MMP | AMP Incorporated | AMP-INC | United States | ||
| MMX | Airmax | PERUMAX | Peru | ||
| MNE | Aerolíneas Amanecer | AEROAMANECER | Mexico | ||
| MNG | Aero Mongolia | AERO MONGOLIA | Mongolia | ||
| MOC | Air Monarch Cargo | MONARCH CARGO | Mexico | ||
| MOP | Aeropublicitaria De Angola | PUBLICITARIA | Angola | ||
| MOR | Aerolíneas De Morelia | AEROMORELIA | Mexico | ||
| A7 | MPD | Air Plus Comet | RED COMET | Spain | |
| QO | MPX | Aeromexpress | AEROMEXPRESS | Mexico | |
| MQT | Air ITM | MUSKETEER | France | ||
| MRL | Aeromorelos | AEROMORELOS | Mexico | ||
| MRM | Aerocharter | MARITIME | Canada | ||
| MR | MRT | Air Mauritanie | MIKE ROMEO | Mauritania | |
| MSC | Air Cairo | Egypt | |||
| MSK | Air Sport | AIR SPORT | Bulgaria | ||
| MSM | Aeromas | AEROMAS EXPRESS | Uruguay | ||
| MSO | Aerolíneas Mesoamericanas | MESO AMERICANAS | Mexico | ||
| MSV | Aero-Kamov | AERAFKAM | Russia | ||
| MTB | Aerotaxis Metropolitanos | AEROMETROPOLIS | Mexico | ||
| MTE | Aeromet Línea Aérea | AEROMET | Chile | defunct | |
| MTK | Air Metack | AIRMETACK | Angola | ||
| MTY | Air Montegomery | MONTY | United Kingdom | ICAO code no longer allocated | |
| MXO | Aerotaxi Mexicano | MAXAERO | Mexico | ||
| MYS | Aero Yaqui Mayo | AERO YAQUI | Mexico | ||
| MZK | AVC Airlines | Japan | |||
| MZL | Aerovías Montes Azules | MONTES AZULES | Mexico | ||
| 2V* | Amtrak | United States | Train services only | ||
| F4 | NBK | Albarka Air | AL-AIR | Nigeria | |
| NEL | Aero Servicios de Nuevo Laredo | AEROLAREDO | Mexico | ||
| NGV | Angoavia | ANGOAVIA | Angola | ||
| NID | Aeroni | AERONI | Mexico | ||
| NIE | Aeroejecutiva Nieto | AERONIETO | Mexico | ||
| AJ | NIG | Aero Contractors | AEROLINE | Nigeria | |
| NKZ | Aerokuzbass | NOVOKUZNETSK | Russia | ||
| NRE | Aviones Are | AVIONES ARE | Mexico | ||
| NRS | Atlantic Richfield Company | NORTH SLOPE | United States | ||
| NSO | Aerolíneas Sosa | SOSA | Honduras | ||
| NTD | Aero Norte | Mexico | |||
| NTV | Air Inter Ivoire | INTER-IVOIRE | Ivory Coast | ||
| NUL | Aeroservicios De Nuevo Leon | SERVICIOS NUEVOLEON | Mexico | ||
| NVI | Avial NV Aviation Company | NEW AVIAL | Russia | ||
| NWG | Airwing | NORWING | Norway | ||
| NXA | Air Next | BLUE-DOLPHIN | Japan | ||
| OAO | Arkhangelsk 2 Aviation Division | DVINA | Russia | ||
| OGI | Aerogisa | AEROGISA | Mexico | ||
| OLV | Aerolíneas Olve | OLVE | Mexico | ||
| OMG | Aeromega | OMEGA | United Kingdom | ||
| ONR | Air One Nine | EDER | Libya | ICAO code no longer allocated | |
| ONT | Air Ontario | ONTARIO | Canada | ||
| ORP | Aerocorp | CORPSA | Mexico | IATA changed to RCP; callsign changed to AEROCORPSA | |
| OSN | Aerosan | AEROSAN | Mexico | ||
| OSO | Aviapartner Limited Company | Russia | |||
| PAJ | Aliparma | ALIPARMA | Italy | ||
| PBT | Air Parabet | PARABET | Bangladesh | ||
| 8Y | PBU | Air Burundi | AIR-BURUNDI | Burundi | |
| PCG | Aeropostal Cargo de Mexico | POSTAL CARGO | Mexico | ||
| PCK | Air Pack Express | AIRPACK EXPRESS | Spain | ||
| PCS | Air Palace | AIR PALACE | Mexico | ||
| OT | PEL | Aeropelican Air Services | PELICAN | Australia | |
| PEV | Peoples Vienna Line | PEOPLES | Austria | ||
| PFI | Aerolíneas Chihuahua | PACIFICO CHIHUAHUA | Mexico | ||
| PFT | Air Cargo Express International | PROFREIGHT | United States | ||
| PHR | Al Farana Airline | PHARAOH | Egypt | ||
| PHW | Ave.com | PHOENIX SHARJAH | United Arab Emirates | ICAO code no longer allocated | |
| PIE | Air South West | PIRATE | United Kingdom | ||
| PIF | Aeroservicios California Pacifico | AEROCALPA | Mexico | ||
| PKA | AST Pakistan Airways | PAKISTAN AIRWAY | Pakistan | ||
| PNL | Aero Personal | AEROPERSONAL | Mexico | ||
| PNU | Aero Servicios Platinum | AERO PLATINUM | Mexico | ||
| POY | Apoyo Aéreo | APOYO AEREO | Mexico | ||
| PRT | Atlantic Coast Jet | PATRIOT | United States | ||
| AD | PRZ | Air Paradise International | RADISAIR | Indonesia | Defunct 2005 |
| PZA | Aéreo Taxi Paraza | AEREO PARAZA | Mexico | ||
| QD | QCL | Air Class Líneas Aéreas | ACLA | Uruguay | |
| QEA | Aviation Consultancy Office | Australia | |||
| QAT | Aero Taxi | AIR QUASAR | Canada | defunct | |
| QKC | Aero Taxi Aviation | QUAKER CITY | United States | ||
| QLA | Aviation Quebec Labrador | QUEBEC LABRADOR | Canada | ||
| QS | QSC | African Safari Airways | ZEBRA | Kenya | |
| QUI | Aero Quimmco | QUIMMCO | Mexico | ||
| RAD | Alada | AIR ALADA | Angola | ||
| RAI | Aerotur Air | DIASA | Kazakhstan | ||
| RAP | Air Center Helicopters | RAPTOR | United States | ||
| RBE | Aur Rum Benin | RUM BENIN | Benin | ||
| RBJ | Aeroserivios Del Bajio | AEROBAJIO | Mexico | ||
| 4Y | RBU | Airbus France | AIRBUS FRANCE | France | |
| RBV | Air Roberval | AIR ROBERVAL | Canada | ||
| AG | ARU | Aruba Airlines | ARUBA | Aruba | |
| RCC | Air Charters Eelde | RACER | Netherlands | ICAO code and call sign no longer allocated | |
| RCE | Aerocer | AEROCER | Mexico | ||
| RCF | Aeroflot-Cargo | AEROFLOT-CARGO | Russia | ||
| MC | RCH | Air Mobility Command | REACH | United States | United States Air Force |
| RCI | Air Cassai | AIR CASSAI | Angola | ||
| RCO | Aero Renta De Coahuila | AEROCOAHUILA | Mexico | ||
| RCP | Aerocorp | AEROCORPSA | Mexico | ||
| RCQ | Aerolíneas Regionales | REGIONAL CARGO | Mexico | ||
| RCU | Atlantic S.L. | AIR COURIER | Spain | ||
| RCX | Air Service Center | SERVICE CENTER | Italy | ||
| RDM | Air Ada | AIR ADA | Mauritania | ||
| RE | REA | Aer Arann | AER ARANN | Ireland | |
| REN | Aero-Rent | AERORENT | Mexico | ||
| RES | Australian Maritime Safety Authority | RESCUE | Australia | ||
| UU | REU | Air Austral | REUNION | France | |
| REY | Aero-Rey | AEROREY | Mexico | ||
| RFC | Aero Africa | AERO AFRICA | Eswatini | ||
| ZP | AZP | Amaszonas Paraguay | GUARANI | Paraguay | |
| RFD | Aerotransportes Rafilher | RAFHILER | Mexico | ||
| RGO | Argo | ARGOS | Dominican Republic | ||
| RGR | Avior Regional | AVIOR REGIONAL | Venezuela | 2014[1] | |
| RGT | Airbourne School of Flying | AIRGOAT | United Kingdom | ICAO code no longer allocated | |
| RHL | Air Archipels | ARCHIPELS | France | ||
| RIF | Aviation Ministry of the Interior of the Russian Federation | INTERMIN AVIA | Russian Federation | ||
| RIS | Aeris Gestión | AERIS | Spain | ||
| 6K | RIT | Asian Spirit | ASIAN SPIRIT | Philippines | |
| RJS | Aeroservicios Jet | ASERJET | Mexico | ||
| RKA | Air Afrique | AIRAFRIC | Ivory Coast | ||
| A5 | RLA | Airlinair | AIRLINAIR | France | |
| NZ | RLK | Air Nelson | NELSON | New Zealand | defunct |
| RLL | Air Leone | AEROLEONE | Sierra Leone | ||
| QL | RLN | Aero Lanka | AERO LANKA | Sri Lanka | |
| RLZ | Air Alize | ALIZE | France | ||
| RMD | Air Amder | AIR AMDER | Mauritania | ||
| R3 | RME | Armenian Airlines | ARMENIAN | Armenia | defunct |
| MV | RML | Air Mediterranean | HELLASMED | Greece | |
| RMO | Arm-Aero | ARM-AERO | Armenia | ||
| RMX | Air Max | AEROMAX | Bulgaria | ||
| 2O | RNE | Air Salone | AIR SALONE | Sierra Leone | |
| RNM | Aeronem Air Cargo | AEROMNEM | Ecuador | ||
| RNR | Air Cargo Masters | RUNNER | United States | ||
| U8 | RNV | Armavia | ARMAVIA | Armenia | defunct, ICAO code no longer allocated |
| ROE | Aeroeste | ESTE-BOLIVIA | Bolivia | ||
| ROH | Aero Gen | AEROGEN | Mexico | ||
| ROI | Avior Airlines | AVIOR | Venezuela | ||
| ROL | Aeroel Airways | AEROEL | Israel | ICAO code no longer allocated | |
| BQ | ROM | Aeromar Lineas Aereas Dominicanas | BRAVO QUEBEC | Dominican Republic | defunct |
| ROO | Aeroitalia | AEROITALIA | Italy | defunct | |
| ROD | Aerodan | AERODAN | Mexico | ||
| P5 | RPB | AeroRepública | AEROREPUBLICA | Colombia | |
| RPC | Aerolíneas Del Pacífico | AEROPACSA | Ecuador | ||
| RRC | Aero Roca | AEROROCA | Mexico | ||
| RRE | Aerotransportes Internacionales De Torreon | AERO TORREON | Mexico | ||
| RSC | Aerolíneas Ejecutivas Tarascas | TARASCAS | Mexico | ||
| E4 | RSO | Aero Asia International | AERO ASIA | Pakistan | defunct |
| BF | RSR | Aero-Service | CONGOSERV | Republic of the Congo | |
| 5L | RSU | AeroSur | AEROSUR | Bolivia | |
| RTE | Aeronorte | LUZAVIA | Portugal | ICAO code no longer allocated | |
| RTH | Artis | ARTHELICO | France | ||
| RTO | Arhabaev Tourism Airlines | ARTOAIR | Kazakhstan | ||
| RTQ | Air Turquoise | TURQUOISE | France | ||
| RTU | Aerotucan | AEROTUCAN | Mexico | ||
| RUD | Air Anastasia | ANASTASIA | Ukraine | ||
| RUM | Air Rum | AIR RUM | Sierra Leone | ||
| RVP | Air VIP | AEROVIP | Portugal | ||
| RVT | Aircompany Veteran | AIR-VET | Armenia | ||
| RWB | Alliance Express Rwanda | Rwanda | Formerly Air Rwanda, revived as RwandAir after the Rwandan Genocide | ||
| RWC | Arrow Ecuador Arrowec | ARROWEC | Ecuador | ||
| RWY | Aerogroup 98 Limited | TYNWALD | United Kingdom | ICAO code no longer allocated | |
| RXT | Aeroxtra | AERO-EXTRA | Mexico | ||
| RWS | Air Whitsunday | Australia | |||
| RZL | Aero Zambia | AERO ZAMBIA | Zambia | ||
| RZN | Aero Zano | ZANO | Mexico | ||
| RZZ | Anoka Air Charter | RED ZONE | United States | ||
| SBH | Aerosaab | AEROSAAB | Mexico | ||
| SCD | Associated Aviation | ASSOCIATED | Nigeria | ||
| SCM | American Jet International | SCREAMER | United States | ||
| EX | SDO | Air Santo Domingo | AERO DOMINGO | Dominican Republic | |
| SDP | Aero Sudpacifico | SUDPACIFICO | Mexico | ||
| SEF | Aero Servicios Ejecutivas Del Pacifico | SERVIPACIFICO | Mexico | ||
| JR | SER | Aero California | AEROCALIFORNIA | Mexico | |
| SGV | Aerosegovia | SEGOVIA | Nicaragua | ||
| SHH | Airshare Holdings | AIRSHARE | United Kingdom | ICAO code no longer allocated | |
| SIY | Aerosiyusa | SIYUSA | Mexico | ||
| SIZ | Aero Silza | AEROSILZA | Mexico | ||
| SJN | Air San Juan | SAN JUAN | United States | ||
| SKP | Aero-North Aviation Services | SKIPPER | Canada | defunct | |
| SMI | Aero Sami | SAMI | Mexico | ||
| Z3 | SMJ | Avient Aviation | AVAVIA | Zimbabwe | |
| SOD | Aerolíneas Sol | ALSOL | Mexico | ||
| SOE | Air Soleil | AIR SOLEIL | Mauritania | ||
| SOG | Aero Soga | AEROSOGA | Guinea-Bissau | defunct | |
| SPD | Airspeed Aviation | SPEEDLINE | Canada | ICAO code no longer allocated | |
| M3 | SPJ | Air Service | AIR SKOPJE | Macedonia | |
| SPO | Aeroservicios Ejecutivos Del Pacifico | EJECTUIV PACIFICO | Mexico | ||
| SPY | Asian Aerospace Service | THAI SPACE | Thailand | ||
| SPZ | Airworld | SPEED SERVICE | South Africa | ||
| SQR | Alsaqer Aviation | ALSAQER AVIATION | Libya | ICAO code no longer allocated | |
| SRI | Air Safaris and Services | AIRSAFARI | New Zealand | ||
| SRV | Aero Servicio Corporativo | SERVICORP | Mexico | ||
| SSL | Air Sultan | SIERRA SULTAN | Sierra Leone | ||
| SSM | Aero 1 Pro-Jet | RAPID | Canada | defunct | |
| SSN | Airquarius Air Charter | SUNSTREAM | South Africa | ICAO code no longer allocated | |
| STK | Aeropac | SAT PAK | United States | ||
| STT | Air St. Thomas | PARADISE | United States | ||
| SUE | Aerolíneas Del Sureste | AEROSURESTE | Mexico | ||
| 8D* | SUW | Astair | Russian Federation | Name changed to Interavia Airlines | |
| SUY | Aerial Surveys (1980) Limited | SURVEY | New Zealand | ||
| GM | SVK | Air Slovakia | SLOVAKIA | Slovakia | ICAO code no longer allocated |
| R3 | SYL | Aircompany Yakutia | AIR YAKUTIA | Russia | |
| SYT | Aerosud Aviation | SKYTRACK | South Africa | ||
| HC | SZN | Air Senegal | AIR SENEGAL | Senegal | |
| TAA | Aeroservicios de La Costa | AERO COSTA | Mexico | ||
| VW | TAO | Aeromar | TRANS-AEROMAR | Mexico | |
| TBL | Aerotrebol | AEROTREBOL | Mexico | ||
| TBO | Aero Taxi de Los Cabos | AERO CABOS | Mexico | ||
| JY | TCI | Air Turks and Caicos | KERRMONT | Turks and Caicos Islands | ICAO code no longer allocated |
| TCO | Aerotranscolombina de Carga | TRANSCOLOMBIA | Colombia | ||
| TDG | Air Cargo Express | TURBO DOG | United States | ||
| TDT | Atlas Helicopters | TRIDENT | United Kingdom | ||
| TDY | Air Today | AIR TODAY | United States | ||
| TED | Aero Servicios Azteca | AEROAZTECA | Mexico | ||
| TIR | Antair | ANTAIR | Mexico | ||
| TLD | Aereo Taxi Autlan | AEREO AUTLAN | Mexico | ||
| TLE | Aero Util | AEROUTIL | Mexico | ||
| TLU | Aero Toluca Internactional | AEROTOLUCA | Mexico | ||
| TME | Aero Taxi del Centro de Mexico | TAXICENTRO | Mexico | ||
| TOC | Aerotropical | TROPICMEX | Mexico | ||
| TOH | Air Tomisko | TOMISKO CARGO | Serbia | ||
| CG | TOK | Airlines PNG | BALUS | Papua New Guinea | |
| TON | Aero Tonala | AEROTONALA | Mexico | ||
| TPB | Aero Tropical | AERO TROPICAL | Angola | ||
| TY | TPC | Air Calédonie | AIRCAL | France | |
| TPK | Air Horizon | TCHAD-HORIZON | Chad | ||
| TPO | Aero Taxi del Potosi | TAXI-POTOSI | Mexico | ||
| TQS | Aeroturquesa | AEROTURQUESA | Mexico | ||
| TRH | Airmark Aviation | TRANSTAR | United States | ||
| FL | TRS | AirTran Airways | CITRUS | United States | defunct, last flight 12/30/2014, now part of Southwest Airlines |
| TS | TSC | Air Transat | AIR TRANSAT | Canada | |
| TSQ | airtransse | AIRTRA | Japan | ||
| TTB | Aerolíneas Turísticas del Caribe | AERO TURISTICAS | Mexico | ||
| TTE | Avcenter | TETON | United States | ||
| TUN | Air Tungaru | TUNGARU | Kiribati | defunct | |
| EC | TWN | Avialeasing Aviation Company | TWINARROW | Uzbekistan | |
| TXD | Aerotaxis del Noroeste | TAXI OESTE | Mexico | ||
| TXF | Aerotaxis Alfe | ALFE | Mexico | ||
| TXI | Aereotaxis | AEREOTAXIS | Mexico | ||
| TZA | Aero Tomza | AERO TOMZA | Mexico | ||
| TZT | Air Zambezi | ZAMBEZI | Zimbabwe | ||
| UAG | Afra Airlines | AFRALINE | Ghana | ||
| UAR | Aerostar Airlines | AEROSTAR | Ukraine | ||
| UCK | Air Division of the Eastern Kazakhstan Region | GALETA | Kazakhstan | ||
| U7 | UGA | Air Uganda | UGANDA | Uganda | |
| UED | Air LA | AIR L-A | United States | ||
| 6U | UKR | Air Ukraine | AIR UKRAINE | Ukraine | |
| UMB | Air Umbria | AIR UMBRIA | Italy | ||
| UND | Atuneros Unidos de California | ATUNEROS UNIDOS | Mexico | ||
| USC | AirNet Express | STAR CHECK | United States | Renamed from US Check Airlines | |
| VNR | Avantair | AVANTAIR | United States | defunct | |
| VTG | Aviação Transportes Aéreos e Cargas | ATACARGO | Angola | ||
| WAS | Air-Watania | Iraq | |||
| AAJ | Alfa Airlines | ALFA SUDAN | Sudan | ||
| KO | AER | Alaska Central Express | ACE AIR | United States | |
| AAK | Alaska Island Air | ALASKA ISLAND | United States | ||
| KH | AAH | Aloha Air Cargo | ALOHA | United States | |
| AQ | AAH | Aloha Airlines | ALOHA | United States | defunct; former IATA code: TS |
| AA | AAL | American Airlines | AMERICAN | United States | |
| XFS | American Flight Service Systems | United States | |||
| XMG | AMS Group | Russia | |||
| WD* | AAN | Amsterdam Airlines | AMSTEL | Netherlands | Former IATA code: FH*. ICAO code and call sign no longer allocated |
| ABI | Antigua and Barbuda Airways | Anair | Antigua and Barbuda | defunct | |
| HO | DJA | Antinea Airlines | ANTINEA | Algeria | defunct |
| EDY | Apollo Air Service | STOBART | United Kingdom | Was VLL Limited | |
| SRY | As-Aero | Armenia | |||
| OZ | AAR | Asiana Airlines | ASIANA | South Korea | |
| XXX | ASL (Air Service Liege) | Belgium | |||
| AG | ABR | ASL Airlines Ireland | CONTRACT | Ireland | Former IATA Code: AG; former names: Hunting Air Cargo Airlines, Air Contractors |
| XJA | Assistance Aeroportuaire de L'Aeroport de Paris | France | |||
| AAE | Astec Air East | AIR EAST | United States | defunct | |
| 8V | ACP | Astral Aviation | ASTRAL CARGO | Kenya | |
| AAP | Astro Air International | ASTRO AIR | Philippines | defunct | |
| ATT | Attawasol Airlines | ATTAWASOL AIR | Libya | ||
| XM | XME | Australian airExpress | AUS-CARGO | Australia | |
| AO | AUZ | Australian Airlines | AUSTRALIAN | Australia | Subsidiary merged with Qantas |
| VAI | Avalair | AIR AVALAIR | Serbia | ||
| XP | VXP | Avelo Airlines | AVELO | United States | Former ICAO code: CXP; former names: Casino Express Airlines, Xtra Airways |
| VE | AVE | Avensa | AVENSA | Venezuela | defunct |
| VRT | Averitt Air Charter | AVERITT | United States | ||
| VSC | AVESCA | AVESCA | Colombia | defunct | |
| AJF | Avia Consult Flugbetriebs | AVIACONSULT | Austria | ||
| VTT | Avia Trans Air Transport | VIATRANSPORT | Sudan | ||
| 6A | CHP | Aviacsa | AVIACSA | Mexico | |
| AV | AVA | Avianca | AVIANCA | Colombia | |
| A0 | MCJ | Avianca Argentina | JETMAC | Argentina | Owned by Synergy Group |
| O6 | ONE | Avianca Brasil | OCEAN AIR | Brazil | Owned by Synergy Group |
| 2K | GLG | Avianca Ecuador | GALAPAGOS | Ecuador | Aerolíneas Galápagos SA |
| XAV | Aviaprom Enterprises | AVIAPROM | Russia | ||
| AVB | Aviation Beauport | BEAUPAIR | United Kingdom | ||
| AVQ | Aviation Services, Inc. | AQUILINE | United States | ||
| ACJ | Avicon | AVICHARTER | Kenya | ||
| VSR | Aviostart AS | AVIOSTART | Bulgaria | ||
| V5 | VLI | Avolar Aerolíneas | AEROVOLAR | Mexico | defunct |
| VSA | Avstar Aviation | STARBIRD | South Africa | ||
| AD | AZU | Azul Linhas Aéreas Brasileiras | Azul | Brazil | |
| BBF | B-Air Charter | SPEEDCHARTER | Germany | 2014[13] | |
| CJ | CFE | BA CityFlyer | FLYER | United Kingdom | |
| TH | BRT | BA Connect | BRITISH | United Kingdom | defunct |
| EFW | BA Euroflyer | GRIFFIN | United Kingdom | BA Euroflyer subsidiary based at London Gatwick | |
| BAC | BAC Leasing Limited | United Kingdom | |||
| B4 | BCF | BACH Flugbetriebsges | BACH | Austria | |
| BOB | Backbone A/S | BACKBONE | Denmark | ||
| J4 | BDR | Badr Airlines | BADR AIR | Sudan | |
| BAE | BAE Systems | FELIX | United Kingdom | Corporate Air Travel | |
| UP | BHS | Bahamasair | BAHAMAS | Bahamas | |
| BAB | Bahrain Air BSC (Closed) | AWAL | Bahrain | ||
| BFW | Bahrain Defence Force | SUMMAN | Bahrain | ||
| BXA | Bahrain Executive Air Services | BEXAIR | Bahrain | ||
| BJA | Baja Air | BAJA AIR | Mexico | ||
| 8Q* | BAJ | Baker Aviation | RODEO | United States | |
| OGJ | Bakoji Airlines Services | BAKO AIR | Nigeria | ||
| V9 | BTC | BAL Bashkirian Airlines | BASHKIRIAN | Russia | |
| BEF | Balear Express | BALEAR EXPRESS | Spain | ||
| BLN | Bali International Air Service | BIAR | Indonesia | ||
| BAA | Balkan Agro Aviation | BALKAN AGRO | Bulgaria | ||
| LZ | LAZ | Balkan Bulgarian Airlines | BALKAN | Bulgaria | defunct |
| BHI | Balkh Airlines | SHARIF | Afghanistan | ||
| PNT | Balmoral Central Contracts | PORTNET | South Africa | ||
| BQ | BTL | Baltia Air Lines | BALTIA | United States | Callsign changed from "BALTIA FLIGHT" in 2015[14] |
| BLL | Baltic Airlines | BALTIC AIRLINES | Russia | ||
| BLT | Baltic Aviation | BALTAIR | United States | ||
| BJC | Baltic Jet Aircompany | BALTIC JET | Latvia | ||
| BTH | Baltijas Helicopters | BALTIJAS HELICOPTERS | Latvia | ||
| CPJ | Baltimore Air Transport | CORPJET | United States | ||
| EAH | Baltimore Airways | EASTERN | United States | ||
| BTK | Baltyka | BALTYKA | Ukraine | ||
| QH | BAV | Bamboo Airways | BAMBOO | Vietnam | |
| QO | AJC | Bar Harbor Airlines | BAR HARBOR | United States | |
| BAX Global | |||||
| AUJ | Business Flight Salzburg | AUSTROJET | Austria | ||
| CWR | Beijing City International Jet | CITY WORLD | China | ||
| BJV | Beijing Vistajet Aviation | BEIJING VISTA | China | ||
| BHK | Blu Halkin | BLUEHAKIN | United Kingdom | ||
| BXJ | Brixtel Group | BRIXTEL JET | United States | ||
| BYG | Bygone Aviation | BYGONE | United States | ||
| BBJ | Blue Air Lines | BLUE KOREA | South Korea | ||
| BCJ | Blue Jet Charters | BLUE BOY | Poland | ||
| BNA | Bun Air Corporation | BUN AIR | United States | ||
| B3 | BTN | Bhutan Airlines | BHUTAN AIR | Bhutan | |
| BAF | Belgian Air Force | BELGIAN AIRFORCE | Belgium | ||
| BAK | Blackhawk Airways | BLACKHAWK | United States | ||
| L9 | BAL | Belle Air Europe | BELLEAIR EUROPE | Italy | Previously Britannia Airways |
| BAL | Britannia Airways | BRITANNIA | United Kingdom | Defunct | |
| BAM | Business Air Services | BUSINESS AIR | Canada | ||
| BAN | British Antarctic Survey | PENGUIN | United Kingdom | ||
| BAR | Bradly Air (Charter) Services | BRADLEY | Canada | ||
| BAU | Bissau Airlines | AIR BISSAU | Guinea-Bissau | ||
| BAV | Bay Aviation Ltd | BAY AIR | Bangladesh | ||
| BA | BAW | British Airways | SPEEDBIRD | United Kingdom | |
| BAX | Best Aero Handling Ltd | Russia | |||
| BAY | Bravo Airways | BRAVOAVIANCA | Ukraine | ||
| BBA | Bannert Air | BANAIR | Austria | ||
| BG | BBC | Biman Bangladesh Airlines | BANGLADESH | Bangladesh | |
| BO | BBD | Bluebird Nordic | BLUE CARGO | Iceland | |
| BBS | Beibars CJSC | BEIBARS | Kazakhstan | ||
| BBV | Bravo Airlines | BRAVO EUROPE | Spain | ||
| BO | BBW | BB Airways | BEEBEE AIRWAYS | Nepal | |
| BBZ | Bluebird Aviation | COBRA | Kenya | ||
| SI | BCI | Blue Islands | BLUE ISLAND | United Kingdom | |
| EO | BCL | British Caribbean Airways | United Kingdom | defunct | |
| BCR | British Charter | BACKER | United Kingdom | ||
| BCT | BCT Aviation | BOBCAT | United Kingdom | ||
| BCV | Business Aviation Center | BUSINESS AVIATION | Ukraine | ||
| WX | BCY | CityJet | CITY JET | Ireland | |
| BZ | BDA | Blue Dart Aviation | BLUE DART | India | |
| JA | BON | B&H Airlines | Air Bosna | Bosnia and Herzegovina | |
| BDF | Bissau Discovery Flying Club | BISSAU DISCOVERY | Guinea-Bissau | ||
| AYB | Belgian Army | BELGIAN ARMY | Belgium | ||
| BEA | Best Aviation Ltd | BEST AIR | Bangladesh | ||
| BED | Belgorod Air Enterprise | BELOGORYE | Russia | defunct | |
| BEH | Bel Air Helicopters | BLUECOPTER | Denmark | ||
| BEK | Berkut Air | BERKUT | Kazakhstan | ||
| BET | BETA - Brazilian Express Transportes Aéreos | BETA CARGO | Brazil | ||
| BFC | Basler Flight Service | BASLER | United States | ||
| BFG | Bear Flight | BEARFLIGHT | Sweden | ||
| J4 | BFL | Buffalo Airways | BUFFALO | Canada | |
| BFO | Bombardier | BOMBARDIER | Canada | ||
| BFR | Burkina Airlines | BURKLINES | Burkina Faso | ||
| BFS | Business Flight Sweden | BUSINESS FLIGHT | Sweden | ||
| 8H | BGH | BH Air | BALKAN HOLIDAYS | Bulgaria | |
| BGI | British Gulf International | BRITISH GULF | São Tomé and Príncipe | ||
| BGK | British Gulf International-Fez | GULF INTER | Kyrgyzstan | ||
| A8 | BGL | Benin Golf Air | BENIN GOLF | Benin | |
| BGM | Bugulma Air Enterprise | BUGAVIA | Russia | ||
| BGR | Budget Air Bangladesh | BUDGET AIR | Bangladesh | ||
| BGT | Bergen Air Transport | BERGEN AIR | Norway | ||
| U4 | BHA | Buddha Air | BUDDHA AIR | Nepal | |
| UH | BHL | Bristow Helicopters | BRISTOW | United Kingdom | |
| BHN | Bristow Helicopters Nigeria | BRISTOW HELICOPTERS | Nigeria | ||
| BHO | Bhoja Airlines | BHOJA | Pakistan | ||
| 4T | BHP | Belair Airlines | BELAIR | Switzerland | |
| BHR | Bighorn Airways | BIGHORN AIR | United States | ||
| BHT | Bright Air | BRIGHTAIR | Netherlands | ICAO code and call sign no longer allocated | |
| E6 | Bringer Air Cargo Taxi Aéreo | Brazil | |||
| BHY | Bosphorus European Airways | BOSPHORUS | Turkey | ||
| BID | Binair | BINAIR | Germany | ||
| BIG | Big Island Air | BIG ISLE | United States | ||
| BS | BIH | British International Helicopters | BRINTEL | United Kingdom | |
| BIL | Billund Air Center | BILAIR | Denmark | ||
| BIN | Boise Interagency Fire Center | BISON-AIR | United States | ||
| BIO | Bioflight A/S | BIOFLIGHT | Denmark | ||
| BIR | Bird Leasing | BIRD AIR | United States | ||
| BIZ | Bizjet Ltd | BIZZ | United Kingdom | ||
| BJS | Business Jet Solutions | SOLUTION | United States | ||
| B4 | BKA | Bankair | BANKAIR | United States | |
| BKF | BF-Lento OY | BAKERFLIGHT | Finland | ||
| BKK | Blink | BLINKAIR | United Kingdom | ||
| BKJ | Barken International | BARKEN JET | United States | ||
| PG | BKP | Bangkok Airways | BANGKOK AIR | Thailand | |
| BKV | Bukovyna | BUKOVYNA | Ukraine | ||
| BLB | Blue Bird Aviation | BLUEBIRD SUDAN | Sudan | ||
| BLC | Bellesavia | BELLESAVIA | Belarus | ||
| BLE | Blue Line | BLUE BERRY | France | ||
| KF | BLF | Blue1 | BLUEFIN | Finland | |
| BLG | Belgavia | BELGAVIA | Belgium | ||
| BLH | Blue Horizon Travel Club | BLUE HORIZON | United States | ||
| BLJ | Blue Jet | BLUEWAY | Spain | ||
| BLM | Blue Sky Airlines | BLUE ARMENIA | Armenia | defunct | |
| JV | BLS | Bearskin Lake Air Service | BEARSKIN | Canada | |
| B3 | BLV | Bellview Airlines | BELLVIEW AIRLINES | Nigeria | |
| BD | BMA | BMI | MIDLAND | United Kingdom | defunct |
| BM | BMR | BMI Regional | MIDLAND | United Kingdom | |
| BMD | British Medical Charter | BRITISH MEDICAL | United Kingdom | ||
| BME | Briggs Marine Environmental Services | BRIGGS | United Kingdom | ||
| BMH | Bristow Masayu Helicopters | MASAYU | Indonesia | ||
| WW | BMI | Bmibaby | BABY | United Kingdom | defunct |
| CH | BMJ | Bemidji Airlines | BEMIDJI | United States | |
| 5Z | BML | Bismillah Airlines | BISMILLAH | Bangladesh | IATA code in use by another company |
| BMN | Bowman Aviation | BOWMAN | United States | ||
| BMW | BMW | BMW-FLIGHT | Germany | ||
| BMX | Banco de Mexico | BANXICO | Mexico | ||
| BND | Bond Offshore Helicopters | BOND | United Kingdom | ||
| BNE | Benina Air | BENINA AIR | Libya | ||
| BN | BNF | Braniff International Airways | Braniff | United States | defunct |
| BNG | BN Group Limited | VECTIS | United Kingdom | ||
| BNJ | Air Service Liège (ASL) | JET BELGIUM | Belgium | ||
| BNL | Blue Nile Ethiopia Trading | NILE TRADING | Ethiopia | ||
| BNR | Bonair Aviation | BONAIR | Canada | ||
| BNS | Bancstar - Valley National Corporation | BANCSTAR | United States | ||
| BNT | Bentiu Air Transport | BENTIU AIR | Sudan | ||
| BNV | Benane Aviation Corporation | BENANE | Mauritania | ||
| BNW | British North West Airlines | BRITISH NORTH | United Kingdom | ||
| BOD | Bond Air Services | UGABOND | Uganda | ||
| BOA | Boniair | KUMANOVO | North Macedonia | ||
| AB | BNZ | Bonza | BONZA | Australia | |
| BOE | Boeing | BOEING | United States | ||
| BOF | Bordaire | BORDAIR | Canada | ||
| BOO | Bookajet Limited | BOOKAJET | United Kingdom | ||
| BO | BOU | Bouraq Indonesia Airlines | BOURAQ | Indonesia | |
| BV | BPA | Blue Panorama Airlines | BLUE PANOROMA | Italy | |
| BPK | Berkhut ZK | VENERA | Kazakhstan | ||
| BPO | Bundespolizei-Fliegertruppe | PIROL | Germany | ||
| BPS | Budapest Aircraft Services/Manx2 | BASE | Hungary | ||
| BPT | Bonus Aviation | BONUS | United Kingdom | ||
| BPX | British Petroleum Exploration | Colombia | |||
| 7R | BRB | BRA-Transportes Aéreos | BRA-TRANSPAEREOS | Brazil | |
| BRD | Brock Air Services | BROCK AIR | Canada | ||
| BRE | Breeze Ltd | AVIABREEZE | Ukraine | ||
| 8E | BRG | Bering Air | BERING AIR | United States | |
| BRK | Briansk State Air Enterprise | BRIANSK-AVIA | Russia | ||
| BRN | Branson Airlines | BRANSON | United States | ||
| BRO | BASE Regional Airlines | COASTRIDER | Netherlands | ICAO code in use by another company, call sign no longer allocated | |
| BRS | Brazilian Air Force | BRAZILIAN AIR FORCE | Brazil | ||
| TH | BRT | British Regional Airlines | BRITISH | United Kingdom | defunct |
| B2 | BRU | Belavia Belarusian Airlines | BELARUS AVIA | Belarus | |
| BRV | Bravo Air Congo | BRAVO | Democratic Republic of the Congo | defunct | |
| BRW | Bright Aviation Services | BRIGHT SERVICES | Bulgaria | ||
| BRX | Buffalo Express Airlines | BUFF EXPRESS | United States | ||
| BRY | Burundayavia | BURAIR | Kazakhstan | ||
| BSC | Bistair - Fez | BIG SHOT | Kyrgyzstan | ||
| BSD | Blue Star Airlines | AIRLINES STAR | Mexico | ||
| BSI | Brasair Transportes Aéreos | BRASAIR | Brazil | ||
| BSJ | Blue Swan Aviation | BLUE SWAN | United Kingdom | ICAO Code and callsign (BSJ/BLUE SWAN) withdrawn | |
| BSM | Blue Sky Aviation | Lebanon | |||
| BSS | Bissau Aero Transporte | BISSAU AIRSYSTEM | Guinea-Bissau | ||
| BST | Best Air | TUNCA | Turkey | ||
| BSW | Blue Sky Airways | SKY BLUE | Czech Republic | ||
| GQ | BSY | Big Sky Airlines | BIG SKY | United States | |
| BTI | Air Baltic | Air Baltic | Latvia | ||
| ID | BTK | Batik Air | BATIK | Indonesia | |
| 4B | BTQ | Boutique Air | BOUTIQUE | United States | |
| BTR | Botir-Avia | BOTIR-AVIA | Kyrgyzstan | ||
| BTT | BT-Slavuta | BEETEE-SLAVUTA | Ukraine | ||
| Y6 | BTV | Batavia Air | BATAVIA | Indonesia | As of June 1, 2010, IATA code changed to Y6. |
| L9 | BTZ | Bristow U.S. LLC | BRISTOW | United States | |
| 1T | BUC | Bulgarian Air Charter | BULGARIAN CHARTER | Bulgaria | |
| BUL | Blue Airlines | BLUE AIRLINES | Democratic Republic of the Congo | ||
| BU | BUN | Buryat Airlines Aircompany | BURAL | Russia | |
| BUZ | Buzz Stansted | BUZZ | United Kingdom | ||
| BVA | Buffalo Airways | BUFFALO AIR | United States | ||
| BVC | Bulgarian Aeronautical Centre | BULGARIAN WINGS | Bulgaria | ||
| BVN | Baron Aviation Services | SHOW-ME | United States | ||
| J8 | BVT | Berjaya Air | BERJAYA | Malaysia | |
| B3 | BVU | Bellview Airlines, Sierra Leone | BELLVIEW AIRLINES | Sierra Leone | |
| BWD | Bluewest Helicopters-Greenland | BLUEWEST | Denmark | ||
| QW | BWG | Blue Wings | BLUE WINGS | Germany | defunct |
| BWI | Blue Wing Airlines | BLUE TAIL | Suriname | ||
| BWL | British World Airlines | BRITWORLD | United Kingdom | ||
| BXH | Bar XH Air | PALLISER | Canada | ||
| SN | BXI | Brussels Airlines | XENIA | Belgium | defunct as Brussels International Airlines in 2001 |
| BYA | Berry Aviation | BERRY | United States | ||
| BYC | Cambodia Bayon Airlines | Bayon Air | Cambodia | ||
| BYF | San Carlos Flight Center | BAY FLIGHT | United States | ||
| BYL | Bylina Joint-Stock Company | BYLINA | Russia | ||
| BYR | Berytos Airlines | Lebanon | |||
| BYE | Bayu Indonesia Air | BAYU | Indonesia | ||
| BZA | Bizair Fluggesellschaft | BERLIN BEAR | Germany | ||
| DB | BZH | Brit Air | BRITAIR | France | |
| BZZ | Butane Buzzard Aviation Corporation | BUZZARD | United Kingdom | ||
| JD | CBJ | Beijing Capital Airlines | CAPITAL JET | China | |
| CKM | BKS Air (Rivaflecha) | COSMOS | Spain | ||
| CLF | Bristol Flying Centre | CLIFTON | United Kingdom | ||
| CLN | Barnes Olsen Aeroleasing | SEELINE | United Kingdom | ||
| E9 | CXS | Boston-Maine Airways | CLIPPER CONNECTION | United States | Pan Am Clipper Connection Pan Am III |
| SN | BEL | Brussels Airlines | BEE-LINE | Belgium | |
| EBA | Bond Aviation | BOND AVIATION | Italy | ||
| EXB | Brazilian Army Aviation | BRAZILIAN ARMY | Brazil | ||
| EXP | Business Express Delivery | EXPRESS AIR | Canada | ||
| FOS | Bel Limited | Russia | |||
| GAA | Business Express | BIZEX | United States | ||
| HAW | Bangkok Aviation Center | THAI HAWK | Thailand | ||
| HAX | Benair | SCOOP | Norway | ||
| NT | IBB | Binter Canarias | BINTER | Spain | |
| IRJ | Bonyad Airlines | BONYAD AIR | Iran | ||
| IVR | Burundaiavia | RERUN | Kazakhstan | ||
| 0B | BLA | Blue Air | BLUE AIR | Romania | |
| KJ | LAJ | British Mediterranean Airways | BEE MED | United Kingdom | defunct |
| LBY | Belle Air | ALBAN-BELLE | Albania | ||
| LED | Blom Geomatics | SWEEPER | Norway | ||
| LTL | Benin Littoral Airways | LITTORAL | Benin | ||
| LXJ | Bombardier Business Jet Solutions | FLEXJET | United States | ||
| FB | LZB | Bulgaria Air | FLYING BULGARIA | Bulgaria | |
| MBR | Brazilian Navy Aviation | BRAZILIAN NAVY | Brazil | ||
| 8N | NKF | Barents AirLink | NORDFLIGHT | Sweden | previously Nordkalottflyg |
| NYB | Belgian Navy | BELGIAN NAVY | Belgium | ||
| OTA | Business Aviators | OUTLAW | United States | 2014[13] | |
| OUF | Beijing Eofa International Jet | ELEMENT | China | 2014[13] | |
| PEB | Benders Air | PALEMA | Sweden | ||
| POI | BGB Air | BOJBAN | Kazakhstan | ||
| PPS | Butte Aviation | PIPESTONE | United States | ||
| PVO | Bearing Supplies Limited | PROVOST | United Kingdom | ||
| RHD | Bond Air Services | RED HEAD | United Kingdom | ||
| RLR | Business Airfreight | RATTLER | United States | ||
| RRS | Boscombe Down DERA (Formation) | BLACKBOX | United Kingdom | ||
| SCJ | Business Jet Sweden | SCANJET | Sweden | ||
| SHT | British Airways Shuttle | SHUTTLE | United Kingdom | BA domestic services | |
| SKH | British Sky Broadcasting | SKYNEWS | United Kingdom | ||
| TBL | Bell Aliant Regional Communications | TELCO | Canada | ||
| TXB | Bell Helicopter Textron | TEXTRON | Canada | ||
| UKA | Buzzaway Limited | UKAY | United Kingdom | ||
| VLX | Biz Jet Charter | AVOLAR | United States | ||
| VOL | Blue Chip Jet | BLUE SPEED | Sweden | ||
| WFD | BAE Systems | AVRO | United Kingdom | Woodford Flight Test | |
| WTN | BAE Systems | TARNISH | United Kingdom | Warton Military Flight Ops | |
| XBO | Baseops International | United States | |||
| XDA | Bureau Veritas | France | |||
| XMS | British Airways Santa | SANTA | United Kingdom | Christmas charter flights | |
| ZBA | Boskovic Air Charters Limited | BOSKY | Kenya | ||
| JMP | Businesswings | JUMP RUN | Germany | ||
| OB | BOV | Boliviana de Aviación | BOLIVIANA | Bolivia | |
| YB | BRJ | Borajet | BORA JET | Turkey | |
| MX | MXY | Breeze Airways | MOXY | United States |
|
| VL | LHX | City Airlines | CITYAIR | Germany | LH subsidiary Allocated in 2023[15] |
| SRJ | C Air Jet Airlines | SYRJET | Syria | ||
| TIP | C and M Aviation | TRANSPAC | United States | ||
| ORO | C N Air | CAPRI | Spain | ||
| RWG | C&M Airways | RED WING | United States | ||
| RMU | C.S.P., Societe | AIR-MAUR | Mauritania | ||
| CJZ | Caliber Jet | CALIBER JET | United States | ||
| 4A | DYN | California Pacific Airlines | AERODYNAMICS | United States | defunct |
| QC | CRC | Camair-Co | CAMAIRCO | Cameroon | |
| QAI | Conquest Air | CHICKPEA | United States | 2014[16] | |
| CBH | Corporate Eagle Management Services | CLUB HOUSE | United States | Allocated in 2014[17] | |
| CRF | Croix Rouge Francais | CROIX ROUGE | France | 2014[16] | |
| CAA | Civil Aviation Authority of the Czech Republic | INSPECTOR | Czech Republic | ||
| BKR | Civil Air Patrol South Carolina Wing | BOX KAR | United States | ||
| BFN | Compagnie Nationale Naganagani | Burkino Faso | |||
| AWX | Civil Aviation Authority Directorate of Airspace Policy | ALLWEATHER | United Kingdom | ||
| BBN | Civil Aviation Authority Airworthiness Division | BRABAZON | United Kingdom | ||
| ATQ | CHC Helicopters Nigeria | COLIBRI | Nigeria | ||
| APL | Corporativo Aereo Principal | AEREO PRINCIPAL | Mexico | ||
| AIO | Chief of Staff, United States Air Force | AIR CHIEF | United States | ||
| AID | Christian Konig - Century Airbirds | CENTURY AIRBIRD | Austria | ||
| Cambridge Recurrent Training | CAMBRIDGE | United Kingdom | |||
| California Department of Forestry and Fire Protection | CALFIRE | United States | |||
| Careflight Queensland | SAMARITAN | Australia | |||
| Castle Air Charter | CASTLEFILM | United Kingdom | |||
| Challenges Aviation | TIGER | United Kingdom | |||
| Challenges Limited | HERITAGE | United Kingdom | |||
| Cheqair | ASTON | United Kingdom | |||
| Clacton Aero Club | CLASSIC WINGS | United Kingdom | |||
| Coral Sun Airways | CORAL SUN | Kiribati | |||
| Cowan Group | COWAN | United States | |||
| SMW | Carpatair Flight Service | SMART WINGS | Romania | Was Carpatair Flight Training | |
| CCL | Cambodia Airlines | ANGKOR WAT | Cambodia | ||
| KR | KME | Cambodia Airways | GIANT IBIS | Cambodia | |
| CCB | Caricom Airways | DOLPHIN | Barbados |
| |
| CYH | China Southern Airlines Henan | YUHAO | China | ||
| CFB | Chongqing Forebase General Aviation | FOREBASE | China | ||
| XCA | Colt Transportes Aereos | COLT | Brazil | ||
| GCY | CHC Global Operations International | HELIBIRD | United Kingdom | ||
| AUN | Common Sky | COMMON SKY | Austria | ||
| CBI | Cabi | CABI | Ukraine | ||
| CPI | Compagnia Aeronautica Italiana | AIRCAI | Italy | ||
| 5C | ICL | Challenge Airlines IL | CAL | Israel | ex CAL-Cargo Air Lines |
| CMR | CAM Air Management | CAMEO | United Kingdom | ||
| CTZ | CATA Línea Aérea | CATA | Argentina | ||
| CCF | CCF Manager Airline | TOMCAT | Germany | ||
| CED | CEDTA (Compañía Ecuatoriana De Transportes Aéreos) | CEDTA | Ecuador | ||
| HBI | CHC Denmark | HELIBIRD | Denmark | ||
| HEM | CHC Helicopter | HEMS | Australia | ||
| AW | SCH | CHC Airways | SCHREINER | Netherlands | formerly Schreiner Airways. ICAO code in use by another company, call sign no longer allocated |
| HKS | CHC Helikopter Service | HELIBUS | Norway | ||
| VCI | CI-Tours | CI-TOURS | Ivory Coast | ||
| CKC | CKC Services | United States | |||
| CMZ | CM Stair | CEE-EM STAIRS | Mauritania | ||
| CNT | Centre national d'études des télécommunications - C.N.E.T. | KNET | France | ||
| OAP | COAPA AIR | COAPA | Mexico | ||
| PDR | COMAV | SPEEDSTER | Namibia | ||
| CRH | CRI Helicopters Mexico | HELI-MEX | Mexico | ||
| IRO | CSA Air | IRON AIR | United States | ||
| CSE | CSE Aviation | OXFORD | United Kingdom | ||
| CTQ | CTK Network Aviation | CITYLINK | Ghana | ||
| CBR | Cabair College of Air Training | CABAIR | United Kingdom | ||
| CVE | Cabo Verde Express | KABEX | Cape Verde | ||
| CWD | Caernarfon Airworld | AMBASSADOR | United Kingdom | ||
| CXE | Caicos Express Airways | CAICOS | Turks and Caicos Islands | ||
| CCE | Cairo Air Transport Company | Egypt | |||
| CGC | Cal Gulf Aviation | CAL-GULF | São Tomé and Príncipe | ||
| REZ | Cal-West Aviation | CAL AIR | United States | ||
| CSL | California Air Shuttle | CALIFORNIA SHUTTLE | United States | ||
| 3C | CMV | Calima Aviación | CALIMA | Spain | |
| MO | CAV | Calm Air | CALM AIR | Canada | |
| R9 | CAM | Camai Air | AIR CAMAI | United States | Village Aviation |
| K6 | KHV | Cambodia Angkor Air | ANGKOR AIR | Cambodia | |
| UY | UYC | Cameroon Airlines | CAM-AIR | Cameroon | defunct |
| HSO | Campania Helicopteros De Transporte | HELIASTURIAS | Spain | ||
| C6 | CJA | CanJet | CANJET | Canada | |
| PIL | Canada Jet Charters | PINNACLE | Canada | ||
| CP | CDN | Canadian Airlines | CANADIAN | Canada | defunct |
| CTG | Canadian Coast Guard | CANADIAN COAST GUARD | Canada | ||
| HIA | Canadian Eagle Aviation | HAIDA | Canada | ||
| CFC | Canadian Forces | CANFORCE | Canada | ||
| BZD | Canadian Global Air Ambulance | BLIZZARD | Canada | ICAO Code and callsign no longer allocated | |
| CDN | Canadian Helicopters | CANADIAN | Canada | ||
| TKR | Canadian Interagency Forest Fire Centre | TANKER | Canada | ICAO Code and callsign no longer allocated | |
| XNC | Canadian National Telecommunications | Canada | ICAO Code and callsign no longer allocated | ||
| 7F | AKT | Canadian North | ARCTIC | Canada | Air Norterra |
| CP | CPC | Canadian Pacific Airlines | EMPRESS | Canada | ICAO Code and callsign no longer allocated |
| CDR | Canadian Regional Airlines | CANADIAN REGIONAL | Canada | ICAO Code and callsign no longer allocated | |
| CWH | Canadian Warplane Heritage Museum | WARPLANE HERITAGE | Canada | ||
| W2 | CWA | Canadian Western Airlines | CANADIAN WESTERN | Canada | |
| CWW | Canair | CANAIR | China | ||
| CUI | Cancun Air | CAN-AIR | Mexico | ||
| 9K | KAP | Cape Air | CAIR | United States | |
| CTO | Cape Air Transport | Australia | |||
| SEM | Cape Central Airways | SEMO | United States | ||
| CMY | Cape Smythe Air | CAPE SMYTHE AIR | United States | ||
| CPX | Capital Air Service | CAPAIR | United States | ||
| CPD | Capital Airlines | CAPITAL DELTA | Kenya | ||
| NCP | Capital Airlines Limited | CAPITAL SHUTTLE | Nigeria | ||
| PT | CCI | Capital Cargo International Airlines | CAPPY | United States | Allocation deleted 2013 |
| CCQ | Capital City Air Carriers | CAP CITY | United States | ||
| EGL | Capital Trading Aviation | PRESTIGE | United Kingdom | ||
| CEX | Capitol Air Express | CAPITOL EXPRESS | United States | ||
| CWZ | Capitol Wings Airline | CAPWINGS | United States | ||
| VAN | Caravan Air | CAMEL | Mauritania | ||
| CWN | Cardiff Wales Flying Club | CAMBRIAN | United Kingdom | ||
| FVA | Cardinal/Air Virginia | AIR VIRGINIA | United States | ||
| GOL | Cardolaar | CARGOLAAR | Namibia | ||
| CDI | Cards Air Services | CARDS | Philippines | ||
| CFH | CareFlight | CARE FLIGHT | Australia | ||
| CDM | Carga Aérea Dominicana | CARGA AEREA | Dominican Republic | ||
| EST | Carga Express Internacional | CARGAINTER | Mexico | ||
| GG | GGC | Cargo 360 | LONG-HAUL | United States | |
| MCX | Cargo Express | MAURICARGO | Mauritania | ||
| CRV | Cargo Ivoire | CARGOIV | Ivory Coast | ||
| CLM | Cargo Link (Caribbean) | CARGO LINK | Barbados | ||
| P3 | CLU | Cargo Logic Air | FIREBIRD | United Kingdom | |
| CTW | Cargo Three | THIRD CARGO | Panama | ||
| 2G | CRG | Cargoitalia | WHITE PELICAN | Italy | |
| W8 | CJT | Cargojet Airways | CARGOJET | Canada | |
| CV | CLX | Cargolux | CARGOLUX | Luxembourg | |
| C8 | ICV | Cargolux Italia | CARGO MED | Italy | |
| CGM | Cargoman | HOTEL CHARLIE | Oman | ||
| DEL | Carib Aviation | RED TAIL | Antigua and Barbuda | ||
| BCB | Carib Express | WAVEBIRD | Barbados | ||
| PWD | CARIBAIR | CARIBAIR | Dominican Republic | ||
| DCC | Caribbean Air Cargo | CARICARGO | Barbados | ||
| CLT | Caribbean Air Transport | CARIBBEAN | Netherlands | ICAO Code and callsign no longer allocated | |
| CLT | Club Aerocelta de Vuelo Con Motor | Spain | |||
| BW | BWA | Caribbean Airlines | CARIBBEAN AIRLINES | Trinidad and Tobago | |
| IQQ | Caribbean Airways | CARIBJET | Barbados | ||
| CSX | Choice Airways | CHOICE AIR | United States | ||
| TLC | Caribbean Express | CARIB-X | United States | ||
| 8B | GFI | Caribbean Star Airlines | CARIB STAR | Antigua and Barbuda | |
| CRB | Caricom Airways | CARIBBEAN COMMUTER | Suriname | ||
| CRT | Caribintair | CARIBINTAIR | Haiti | ||
| CVG | Carill Aviation | CARILL | United Kingdom | ||
| V3 | KRP | Carpatair | CARPATAIR | Romania | |
| CRR | Carranza | CARRANZA | Chile | defunct | |
| ULS | Carroll Air Service | ULSTER | United States | ||
| CMT | Casement Aviation | CASEMENT | United States | ||
| CSO | Casino Airline | CASAIR | United States | ||
| CSP | Casper Air Service | CASPER AIR | United States | ||
| RV | CPN | Caspian Airlines | CASPIAN | Iran | |
| CSJ | Castle Aviation | CASTLE | United States | ||
| CAZ | Cat Aviation | EUROCAT | Switzerland | ||
| CBT | Catalina Flying Boats | CATALINA AIR | United States | ||
| TEX | Catex | CATEX | France | ||
| KA | HDA | Cathay Dragon | DRAGON | Hong Kong | defunct |
| CX | CPA | Cathay Pacific | CATHAY | Hong Kong | |
| CJR | Caverton Helicopters | CAVERTON AIR | Nigeria | ||
| KX | CAY | Cayman Airways | CAYMAN | Cayman Islands | |
| 5J | CEB | Cebu Pacific | CEBU | Philippines | |
| CIL | Cecil Aviation | CECIL | United Kingdom | ||
| CEG | Cega Aviation | CEGA | United Kingdom | ||
| CEC | Celtic Airways | CELTAIR | United Kingdom | ||
| CWE | Celtic West | CELTIC | United Kingdom | ||
| CEV | Centre d'Essais en Vol | CENTEV | France | ||
| CNL | Centennial Airlines | WYO-AIR | United States | ||
| CNS | Cobalt Air LLC | CHRONOS | United States | ||
| CVO | Center Vol | CENTERVOL | Spain | ||
| CTS | Center-South | CENTER-SOUTH | Russia | ||
| CET | Centrafrican Airlines | CENTRAFRICAIN | Central African Republic | ||
| CAX | Central Air Express | CENTRAL EXPRESS | Democratic Republic of the Congo | ||
| CTL | Central Airlines | CENTRAL COMMUTER | United States | ||
| CNY | Central Airways | CENTRAL LEONE | Sierra Leone | ||
| ACN | Central American Airlines | AEROCENTRO | Nicaragua | ||
| YOG | Central Aviation | YOGAN AIR | United States | ||
| DRN | Central De Discos De Reynosa | DISCOS REYNOSA | Mexico | ||
| 2C | CMA | CMA-CGM AIRCARGO | FRENCH CARGO | France | |
| CHA | Central Flying Service | CHARTER CENTRAL | United States | ||
| CEM | Central Mongolia Airways | CENTRAL MONGOLIA | Mongolia | ||
| 9M | GLR | Central Mountain Air | GLACIER | Canada | |
| CQC | Central Queensland Aviation College | Australia | |||
| CSI | Central Skyport | SKYPORT | United States | ||
| CLW | Centralwings | CENTRALWINGS | Poland | ||
| DTV | Centre Airlines | DUTCH VALLEY | United States | ||
| CGS | Centre of Applied Geodynamica | GEO CENTRE | Russia | ||
| J7 | CVC | Centre-Avia | AVIACENTRE | Russia | |
| CCV | Centro De Helicopteros Corporativos | HELICORPORATIVO | Mexico | ||
| ACF | Centro de Formación Aeronáutica de Canarias | FORCAN | Spain | ||
| WE | CWC | Centurion Air Cargo | CHALLENGE CARGO | United States | |
| URY | Century Aviation | CENTURY AVIA | Mexico | ||
| HAI | Century Aviation International | Canada | |||
| XAD | Certified Air Dispatch | United States | |||
| CER | Cetraca Aviation Service | CETRACA | Democratic Republic of the Congo | ||
| IRU | Chabahar Airlines | CHABAHAR | Iran | ||
| GM | GSW | Chair Airlines | EIGER | Switzerland | |
| CLG | Chalair Aviation | CHALLAIR | France | ||
| OP | CHK | Chalk's International Airlines | CHALKS | United States | |
| CLS | Challenge Air Transport | AIRISTO | Germany | ||
| CHS | Challenge Aviation | CHALLENGE AVIATION | Australia | ||
| OFF | Challenge International Airlines | CHALLENGE AIR | United States | ||
| CHG | Challenge Airlines BE | Challenge | Belgium | ||
| CPH | Champagne Airlines | CHAMPAGNE | France | ||
| MG | CCP | Champion Air | CHAMPION AIR | United States | |
| NCH | Chanchangi Airlines | CHANCHANGI | Nigeria | ||
| 2Z | CGN | Chang An Airlines | CHANGAN | China | |
| CHN | Channel Island Aviation | CHANNEL | United States | ||
| WML | Chantilly Air | MARLIN | United States | ||
| CPL | Chaparral Airlines | CHAPARRAL | United States | ||
| S8 | CSU | Chari Aviation Services | CHARI SERVICE | Chad | |
| CAH | Charlan Air Charter | CHARLAN | South Africa | ICAO Code and callsign no longer allocated | |
| HMD | Charlie Hammonds Flying Service | HAMMOND | United States | ||
| CGD | Charlotte Air National Guard | United States | |||
| CHW | Charter Air | CHARTER WIEN | Austria | ||
| HRT | Chartright Air | CHARTRIGHT | Canada | ||
| RP* | CHQ | Chautauqua Airlines | CHAUTAUQUA | United States | Was US* |
| CBB | Cheboksary Airenterprise JSC | CHEBAIR | Russia | ||
| CHM | Chemech Aviation | Pakistan | |||
| CHZ | Cherline | CHERL | Russia | ||
| CMK | Chernomor-Avia | CHERAVIA | Russia | ||
| CBM | Cherokee Express | BLUE MAX | United States | ||
| CCY | Cherry Air | CHERRY | United States | ||
| CAB | Chesapeake Air Service | CHESAPEAKE AIR | United States | ||
| CVR | Chevron U.S.A | CHEVRON | United States | ||
| CYA | Cheyenne Airways | CHEYENNE AIR | United States | ||
| CGO | Chicago Air | WILD ONION | United States | ||
| C8 | WDY | Chicago Jet Group | WINDY CITY | United States | |
| RAT | Chief Rat Flight Services | RIVERRAT | South Africa | defunct | |
| CCH | Chilchota Taxi Aéreo | CHILCHOTA | Mexico | ||
| DES | Chilcotin Caribou Aviation | CHILCOTIN | Canada | ||
| CAD | Chilliwack Aviation | CHILLIWACKAIR | Canada | ||
| ETN | Chim-Nir Aviation | CHIMNIR | Israel | ||
| CI | CAL | China Airlines | DYNASTY | Taiwan | |
| CK | CKK | China Cargo Airlines | CARGO KING | China | |
| MU | CES | China Eastern Airlines | CHINA EASTERN | China | |
| G5 | HXA | China Express Airlines | CHINA EXPRESS | China | |
| CFA | China Flying Dragon Aviation | FEILONG | China | ||
| CTH | China General Aviation Corporation | TONGHANG | China | ||
| CAG | China National Aviation Corporation | CHINA NATIONAL | China | ||
| CJ | CBF | China Northern Airlines | CHINA NORTHERN | China | defunct. |
| WH | CNW | China Northwest Airlines | CHINA NORTHWEST | China | defunct |
| CHC | China Ocean Helicopter Corporation | CHINA HELICOPTER | China | ||
| 8Y | CYZ | China Postal Airlines | CHINA POST | China | |
| CZ | CSN | China Southern Airlines | CHINA SOUTHERN | China | |
| CXN | China Southwest Airlines | CHINA SOUTHWEST | China | defunct | |
| KN | CUA | China United Airlines | LIANHANG | China | |
| XO | CXH | China Xinhua Airlines | XINHUA | China | |
| 3Q | CYH | China Yunnan Airlines | YUNNAN | China | defunct |
| CGU | Chinguetti Airlines | CHINGUETTI | Mauritania | ||
| CEP | Chipola Aviation | CHIPOLA | United States | ||
| CPW | Chippewa Air Commuter | CHIPPEWA-AIR | United States | ||
| X7 | CHF | Chitaavia | CHITA | Russia | |
| OQ | CQN | Chongqing Airlines | CHONG QING | China | |
| CAS | Christman Air System | CHRISTMAN | United States | ||
| OEC | Christophorus Flugrettungsverein | CHRISTOPHORUS | Austria | ||
| CHO | Chrome Air Services | CHROME AIR | United States | ||
| CHU | Church Aircraft | CHURCHAIR | United States | ||
| A2 | CIU | Cielos Airlines | CIELOS | Peru | |
| QI | CIM | Cimber Sterling | CIMBER | Denmark | |
| C7 | CIN | Cinnamon Air | CINNAMON | Sri Lanka | |
| RRU | Cirrus | HELICIRRUS | Chile | defunct | |
| NTS | Cirrus Air | NITE STAR | United States | ||
| C9 | RUS | Cirrus Airlines | CIRRUS AIR | Germany | defunct |
| JTI | Cirrus Middle East | Lebanon | |||
| FIV | CitationAir | FIVE STAR | United States | ||
| XCX | Citibank | United States | |||
| HZX | Citic General Aviation | ZHONGXIN | China | ||
| SDR | City Airline | SWEDESTAR | Sweden | ||
| G3 | CIX | City Connexion Airlines | CONNEXION | Burundi | defunct |
| XBG | City of Bangor | United States | |||
| WX | BCY | CityJet | CITY-IRELAND | Ireland | |
| CAQ | Cityair (Chester) Limited | AIR CHESTER | United Kingdom | ||
| CII | Cityfly | CITYFLY | Italy | ||
| CJ | CFE | CityFlyer Express | FLYER | United Kingdom | Defunct, ICAO code in use by BA CityFlyer |
| CNB | Cityline Hungary | CITYHUN | Hungary | ||
| HSR | Citylink Airlines | HOOSIER | United States | ||
| CIW | Civair Airways | CIVFLIGHT | South Africa | ||
| CAP | Civil Air Patrol | CAP | United States | ||
| CT | CAT | Civil Air Transport | Mandarin | Taiwan | defunct |
| CIA | Civil Aviation Authority | CALIMERA | Slovakia | ||
| CIV | Civil Aviation Authority of New Zealand | CIVAIR | New Zealand | ||
| CBA | Civil Aviation Inspectorate of the Czech Republic | CALIBRA | Czech Republic | ||
| FMC | Claessens International Limited | CLAESSENS | United Kingdom | ||
| CLK | Clark Aviation | CLARKAIR | United States | ||
| CSF | Clasair | CALEDONIAN | United Kingdom | ||
| CLY | Clay Lacy Aviation | CLAY-LACY | United States | ||
| CGK | Click Airways | CLICK AIR | Kyrgyzstan | ||
| CLZ | Cloud 9 Air Charters | CLOUDLINE | South Africa | ||
| CLD | Clowes Estates Limited | CLOWES | United Kingdom | ||
| SDJ | Club 328 | SPACEJET | United Kingdom | ||
| 6P | ISG | Club Air | CLUBAIR | Italy | |
| BX | CST | Coast Air | COAST CENTER | Norway | |
| DQ | Coastal Air | U.S. Virgin Islands | United States | ||
| TCL | Coastal Air Transport | TRANS COASTAL | United States | Escape Aviation | |
| CNG | Coastal Airways | SID-AIR | United States | ||
| CSV | Coastal Travels | COASTAL TRAVEL | Tanzania | ||
| CHL | Cohlmia Aviation | COHLMIA | United States | ||
| OLR | Colaéreos | COLAEREOS | Ecuador | ||
| CLE | Colemill Enterprises | COLEMILL | United States | ||
| 9L | CJC | Colgan Air | COLGAN | United States | |
| CAE | Colibri Aviation | HUMMINGBIRD | Canada | ||
| YD | CAT | Cologne Air Transport GmbH | Germany | defunct since 1996 | |
| CCX | Colt International | United States | |||
| WCO | Columbia Helicopters | COLUMBIA HELI | United States | ||
| KLR | Columbus Air Transport | KAY-LER | United States | ||
| GHP | Colvin Aviation | GRASSHOPPER EX | United States | ||
| OH | COM | Comair | COMAIR | United States | |
| MN | CAW | Comair | COMMERCIAL | South Africa | |
| GCM | Comair Flight Services | GLOBECOM | South Africa | ||
| CDE | Comed Group | COMEX | United Kingdom | ||
| CVV | Comeravia | COMERAVIA | Venezuela | ||
| CRS | Comercial Aérea | COMERCIAL AEREA | Mexico | ||
| CMG | Comet Airlines | SUNSPY | Nigeria | ||
| FYN | Comfort Air | FLYNN | Germany | ||
| CMJ | Comfort Jet Services | COMFORT JET | Togo | ||
| CLA | Comlux Aviation | COMLUX | Switzerland | ||
| KAZ | Comlux Kazakhstan | KAZLUX | Kazakhstan | ||
| MLM | Comlux Malta | LUXMALTA | Malta | ||
| CXB | Comlux Aruba | STARLUX | Aruba | ||
| CMH | Commair Aviation | COMMODORE | United Kingdom | ||
| CTM | Commandement Du Transport Aerien Militaire Francais | COTAM | France | ||
| CML | Commander Air Charter | COMMANDAIR | Canada | ||
| CRM | Commander Mexicana | COMMANDERMEX | Mexico | [16] | |
| CME | Commerce Bank | COMMERCE BANK | United States | (Kansas City) Allocated in 2014[18] | |
| CMS | Commercial Aviation | ACCESS | Canada | ||
| GAR | Commodore Aviation | Australia | |||
| CJS | Commonwealth Jet Service | COMMONWEALTH | United States | ||
| C5 | UCA | CommutAir | COMMUTAIR | United States | |
| KR | CWK | Comores Airlines | CONTICOM | Comoros | |
| CGR | Compagnia Generale Ripreseaeree | COMPRIP | Italy | ||
| CMM | Compagnie Aérienne du Mali | CAMALI | Mali | ||
| CPM | Compagnie Mauritanienne Des Transports | Mauritania | |||
| GIC | Compagnie de Bauxites de Guinee | CEBEGE | Guinea | ||
| AIF | Compañía Aérea de Valencia | Spain | |||
| ATF | Compañía Aerotécnicas Fotográficas | AEROTECNICAS | Spain | ||
| LCT | Compañía De Actividades Y Servicios De Aviación | STELLAIR | Spain | ||
| EJV | Compania Ejecutiva | EJECUTIVA | Mexico | ||
| HSE | Compania Helicopteros Del Sureste | HELISURESTE | Spain | ||
| MDR | Compania Mexicana De Aeroplanos | AEROPLANOS | Mexico | ||
| HSS | Compañía Transportes Aéreos Del Sur | TAS HELICOPTEROS | Spain | ||
| TAV | Compañía de Servicios Aéreos Tavisa | TAVISA | Spain | ||
| CYF | Company Flight | COMPANY FLIGHT | Denmark | ||
| CP | CPZ | Compass Airlines | COMPASS ROSE | United States | |
| CPS | Compass International Airways | COMPASS | United Kingdom | ||
| XCO | Compuflight Operations Service | United States | |||
| XCS | Compuserve Incorporated | United States | |||
| CRC | Conair Aviation | CONAIR-CANADA | Canada | ||
| COD | Concordavia | CONCORDAVIA | Ukraine | ||
| CNR | Condor Aero Services | CONAERO | United States | ||
| CIB | Condor | CONDOR BERLIN | Germany | ||
| DE | CFG | Condor Flugdienst | CONDOR | Germany | |
| COF | Confort Air | CONFORT | Canada | ||
| CAK | Congo Air | Bahamas | |||
| CGA | Congressional Air | CONGRESSIONAL | United States | ||
| ROY | Conifair Aviation | Canada | |||
| CCT | Connect Air | CONNECT | Canada | Allocated in 2014[19] | |
| BSN | Connectair Charters | BASTION | Canada | ||
| CAC | Conquest Airlines | CONQUEST AIR | United States | ||
| CXO | Conroe Aviation Services | CONROE AIR | United States | ||
| VCH | Consorcio Helitec | CONSORCIO HELITEC | Venezuela | ||
| UZA | Constanta Airline | CONSTANTA | Ukraine | ||
| KIS | Contactair | CONTACTAIR | Germany | ||
| XCL | Contel ASC | United States | |||
| CO | COA | Continental Airlines | CONTINENTAL | United States | ICAO Code and callsign withdrawn, merged with United Airlines |
| CNW | Continental Airways | Moldovoa | 2014[16] | ||
| CO | Continental Express | JETLINK | United States | ||
| CS | CMI | Continental Micronesia | AIR MIKE | United States | |
| CON | Continental Oil | CONOCO | United States | ||
| CS | CS | Cambrian Airways | Cambrian | United Kingdom | defunct 1974 |
| V0 | VCV | Conviasa | CONVIASA | Venezuela | |
| CKA | Cook Inlet Aviation | COOK-AIR | United States | ||
| SVY | Cooper Aerial Surveys | SURVEYOR | United Kingdom | ||
| CM | CMP | Copa Airlines | COPA | Panama | |
| CAT | Copenhagen Air Taxi | AIRCAT | Denmark | ||
| COP | Copper State Air Service | COPPER STATE | United States | ||
| AAQ | Copterline | COPTERLINE | Finland | Former name: Copter Action; former callsign: COPTER ACTION | |
| CQ | CCW | Central Charter | CENTRAL CHARTER | Czech Republic | |
| XC | CAI | Corendon Airlines | CORENDON | Turkey | Turistik Hava Tasimacilik |
| CD | CND | Corendon Dutch Airlines | DUTCH CORENDON | Netherlands | |
| CRA | Coronado Aerolíneas | CORAL | Colombia | ||
| CPB | Corpac Canada | PENTA | Canada | ||
| CNC | Corporación Aéreo Cencor | CENCOR | Mexico | ||
| CPG | Corporacion Aeroangeles | CORPORANG | Mexico | ||
| CGY | Corporacion Paraguaya De Aeronautica | Paraguay | |||
| CPT | Corporate Air | AIR SPUR | United States | ||
| CPR | Corporate Air | CORPAIR | United States | ||
| CPO | Corporate Aircraft Company | MOKAN | United States | ||
| COO | Corporate Airlink | CORPORATE | Canada | ||
| CKE | Corporate Aviation Services | CHECKMATE | United States | ||
| VHT | Corporate Flight International | VEGAS HEAT | United States | ||
| LF | VTE | Contour Airlines | VOLUNTEER | United States | |
| CJI | Corporate Jets | SEA JET | United States | ||
| SS | CRL | Corsairfly | CORSAIR | France | |
| XK | CCM | Corse Méditerranée | CORSICA | France | Name changed to Air Corsica |
| F5 | COZ | Cosmic Air | COSMIC AIR | Nepal | |
| COT | Costa Airlines | COAIR | Venezuela | defunct | |
| GW | CRG | Costa Rica Green Airways | Costa Rica | ||
| CHI | Cougar Helicopters | COUGAR | Canada | ||
| MGB | Coulson Flying Service | MOCKINGBIRD | United Kingdom | ||
| NSW | Country Connection Airlines | Australia | |||
| CIK | Country International Airlines | COUNTRY AIR | Kyrgyzstan | Defunct | |
| CSD | Courier Services | DELIVERY | United States | ||
| CUT | Court Helicopters | COURT AIR | South Africa | ||
| OU | Court Line | COURTLINE | United Kingdom | defunct | |
| CVL | Coval Air | COVAL | Canada | ||
| COW | COWI | COWI | Denmark | ||
| 7C | COY | Coyne Aviation | COYNE AIR | United Kingdom | |
| CFD | Cranfield University | AERONAUT | United Kingdom | ||
| CRE | Cree Airways | CREE AIR | Canada | ||
| ELM | Crelam | CRELAM | Mexico | ||
| CAN | Crest Aviation | CREST | United Kingdom | ||
| KRM | Crimea Universal Avia | TRANS UNIVERSAL | Ukraine | ||
| OU | CTN | Croatia Airlines | CROATIA | Croatia | |
| HRZ | Croatian Air Force | CROATIAN AIRFORCE | Croatia | ||
| CRX | Cross Aviation | CROSSAIR | United Kingdom | ||
| QE | ECC | Crossair Europe | Cigogne | Switzerland | |
| CWX | Crow Executive Air | CROW EXPRESS | United States | ||
| CKR | Crown Air Systems | CROWN AIR | United States | ||
| CRO | Crown Airways | CROWN AIRWAYS | United States | ||
| CRW | Crownair | REGAL | Canada | ||
| VCR | Cruiser Linhas Aéreas | VOE CRUISER | Brazil | ||
| CTY | Cryderman Air Service | CENTURY | United States | ||
| CYT | Crystal Shamrock Airlines | CRYSTAL-AIR | United States | ||
| IRO | CSA Air | IRON AIR | United States | ||
| CU | CUB | Cubana de Aviación | CUBANA | Cuba | |
| CTF | Cutter Aviation | CUTTER FLIGHT | United States | ||
| CBL | Cumberland Airways (Nicholson Air Service) | CUMBERLAND | United States | ||
| CTT | Custom Air Transport | CATT | United States | ||
| RGN | Cygnus Air | CYGNUS AIR | Spain | ||
| CYC | Cyprair Tours | CYPRAIR | Cyprus | ||
| CYS | Cypress Airlines | SKYBIRD | Canada | ||
| CY | CYP | Cyprus Airways | CYPRUS | Cyprus | |
| YK | KYV | Cyprus Turkish Airlines | AIRKIBRIS | Turkey | Ceased operations 2010 |
| CEF | Czech Air Force | CZECH AIR FORCE | Czech Republic | ||
| AHD | Czech Air Handling | AIRHANDLING | Czech Republic | ||
| OK | CSA | Czech Airlines | CSA-LINES | Czech Republic | |
| CIE | Czech Government Flying Service | CZECH REPUBLIC | Czech Republic | ||
| 8L | CGP | Cargo Plus Aviation | United Arab Emirates | ||
| HNL | CHC Helicopters Netherlands | MAPLELEAF | Netherlands | ||
| 5Z | KEM | CemAir | CEMAIR | South Africa | |
| JLH | Centro de Servicio Aeronautico | CESA | Mexico | ||
| FCB | Cobalt | NEW AGE | Cyprus | ||
| CVK | CAVOK Airlines | CARGO LINE | Ukraine | ||
| XG | CLI | Clickair | CLICKJET | Spain | Merge into Vueling |
| PN | CHB | West Air (China) | WEST CHINA | China | |
| CRN | Carson Air Ltd | CARSON | Canada | Air ambulance operator
| |
| ABA | Aero-Beta | Aerobeta | Germany | ||
| DJT | Dreamjet | DREAMJET | France | 2014[20] | |
| DPJ | Delta Private Jets | JET CARD | United States | Changed from ELJ/ELITE JET in 2014[21] | |
| DJR | Desert Jet | DESERT FLIGHT | United States | ||
| DLA | Air Dolomiti | DOLOMITI | Italy | ||
| DLC | Dehong South Asian General Aviation | SOARCOPTER | China | Was Ruili Jingcheng Helicopters | |
| DNS | Dniproaviaservis Company | Ukraine | |||
| DRF | Dream Flyers Training Center | Spain | |||
| DMF | DMCFLY | DEMLY | Mexico | ||
| NAU | Danaus Lineas Aereas | DANAUS | Mexico | ||
| GDF | DF Aviation | Ukraine | |||
| DDA | D & D Aviation | DUSTY | United States | ||
| DNK | D&K Aviation | DIRECT JET | United States | ||
| V5 | VPA | DanubeWings | VIP TAXI | Slovakia | Former names VIP Air and VIP Wings |
| DHE | DAP Helicopteros | HELIDAP | Chile | ||
| VLF | DFS UK Limited | VOLANTE | United Kingdom | ||
| WD | DSR | DAS Air Cargo | DAIRAIR | Uganda | |
| RKC | DAS Airlines | DAS CONGO | Democratic Republic of the Congo | ||
| DX | DTR | DAT Danish Air Transport | DANISH | Denmark | |
| ENT | DAT Enterprise Limited | DATENT | United Kingdom | defunct | |
| BDN | DERA Boscombe Down | GAUNTLET | United Kingdom | ||
| DSN | DESNA | DESNA | Ukraine | ||
| DET | DETA Air | SAMAL | Kazakhstan | ||
| DGO | DGO Jet | DGO JET | Mexico | ||
| DAE | DHL Aero Expreso | YELLOW | Panama | ||
| D0 | DHK | DHL Air Limited | WORLD EXPRESS | United Kingdom | DHL Air UK |
| DHV | DHL Aviation | WORLDSTAR | South Africa | ||
| ES | DHX | DHL International | DILMUN | Bahrain | |
| L3 | JOS | DHL de Guatemala | Guatemala | ||
| RSK | DSWA | REDSKIN | United States | ||
| D3 | DAO | Daallo Airlines | DALO AIRLINES | Djibouti | |
| N2 | DAG | Dagestan Airlines | DAGAL | Russia | |
| DHA | Dahla Airlines | Democratic Republic of Congo | |||
| CA | CCD | Dalian Airlines | XIANGJIAN | China | |
| DCS | DC Aviation | TWIN STAR | Germany | ||
| DCX | Daimler-Chrysler | DAIMLER | United States | ||
| DKA | Daka | Kazakhstan | |||
| DLR | Dala Air Services | DALA AIR | Nigeria | ||
| H8 | KHB | Dalavia | DALAVIA | Russia | |
| DXP | Dallas Express Airlines | DALLAS EXPRESS | United States | ||
| DAS | Damascene Airways | AIRDAM | Syrian Arab Republic | ||
| DSA | Danbury Airways | DANBURY AIRWAYS | United States | ||
| DOP | Dancopter | DANCOPTER | Denmark | ||
| DAF | Danish Air Force | DANISH AIRFORCE | Denmark | ||
| DD | DDL | Danish Air Lines | Denmark | defunct | |
| DAR | Danish Army | DANISH ARMY | Denmark | ||
| DNY | Danish Navy | DANISH NAVY | Denmark | ||
| DNU | Danu Oro Transportas | DANU | Lithuania | ||
| DRT | Darta | DARTA | France | ||
| 0D | DWT | Darwin Airline | DARWIN | Switzerland | |
| DSQ | Dasab Airlines | DASAB AIR | Uganda | ||
| DSH | Dash Air Charter | DASH CHARTER | United States | ||
| GOB | Dash Aviation | PILGRIM | United Kingdom | ||
| DGX | Dasnair | DASNA | Switzerland | ||
| DAB | Dassault Aviation | France | |||
| CVF | Dassault Falcon Jet Corporation | CLOVERLEAF | United States | ||
| DSO | Dassault Falcon Service | DASSAULT | France | ||
| DTN | Data International | DATA AIR | Sudan | ||
| XDT | Date Transformation Corp | United States | |||
| D5 | DAU | Dauair | DAUAIR | Germany | |
| DCO | David Crawshaw Consultants Limited | United Kingdom | |||
| DWN | Dawn Air | DAWN AIR | United States | ||
| DJS | DayJet | DAYJET | United States | ||
| DAY | Daya Aviation | DAYA | Sri Lanka | ||
| DHC | De Havilland | DEHAVILLAND | Canada | ||
| IAY | Deadalos Flugtbetriebs | IASON | Austria | ||
| DAA | Decatur Aviation | DECUR | United States | ||
| DKN | Deccan Charters | DECCAN | India | ||
| JDC | Deere and Company | JOHN DEERE | United States | ||
| DWR | Delaware Skyways | DELAWARE | United States | ||
| DEA | Delta Aerotaxi | JET SERVICE | Italy | ||
| SNO | Delta Air Charter | SNOWBALL | Canada | ||
| ELJ | Delta Private Jets | ELITE JET | United States | Changed to DPJ/JET CARD in 2014[21] | |
| DL | DAL | Delta Air Lines | DELTA | United States | |
| KMB | Delta Engineering Aviation | KEMBLEJET | United Kingdom | ||
| DLI | Delta Express International | DELTA EXPRESS | Ukraine | ||
| DSU | Delta State University | DELTA STATE | United States | ||
| J7 | DNM | Denim Air | DENIM | Netherlands | Defunct |
| FEC | Denver Express | FALCON EXPRESS | United States | ||
| DJT | Denver Jet | DENVER JET | United States | ||
| FGC | Departament d'Agricultura de la Generalitat de Catalunya | FORESTALS | Spain | ||
| DRY | Deraya Air Taxi | DERAYA | Indonesia | ||
| DRX | Des R Cargo Express | Mauritania | |||
| MIZ | Desarrollo Milaz | MILAZ | Mexico | ||
| DTY | Destiny Air Services | DESTINY | Sierra Leone | ||
| 2A | Deutsche Bahn | Germany | |||
| 1I | AMB | Deutsche Rettungsflugwacht | CIVIL AIR AMBULANCE | Germany | |
| LFO | Deutsches Zentrum fur Luft-und Raumfahrt EV | LUFO | Germany | ||
| DIS | Di Air | DI AIR | Serbia | ||
| SPK | Diamond Aviation | SPARKLE | United States | ||
| DRB | Didier Rousset Buy | DIDIER | Chile | ||
| DGT | Digital Equipment Corporation | DIGITAL | United States | ||
| DIP | Diplomatic Freight Services | DIPFREIGHT | United Kingdom | ||
| ENA | Dirección General de Aviación Civil y Telecomunicasciones | ENA | Spain | ||
| DIA | Direct Air | BLUE SKY | United States | ||
| XAP | Direct Air trading as Midway Connection | MID-TOWN | United States | ||
| DCT | Direct Flight | United Kingdom | |||
| SXP | Direct Fly | EXPRESS SKY | Poland | defunct | |
| AW | DIR | Dirgantara Air Service | DIRGANTARA | Indonesia | |
| DCV | Discover Air | DISCOVER | United States | ||
| DH | DVA | Discovery Airways | DISCOVERY AIRWAYS | United States | |
| XDS | Dispatch Services | United States | |||
| DIX | Dix Aviation | DIX FLIGHT | Germany | ||
| DEE | Dixie Airways | TACAIR | United States | ||
| Z6 | UDN | Dniproavia | DNIEPRO | Ukraine | |
| FDN | Dolphin Air | FLYING DOLPHIN | United Arab Emirates | ||
| IXX | Dolphin Express Airlines | ISLAND EXPRESS | United States | ||
| DPL | Dome Petroleum | DOME | Canada | ||
| YU | ADM | Dominair | DOMINAIR | Dominican Republic | defunct; former IATA code: SS; former name: Aerolíneas Dominicanas, ICAO code no longer allocated |
| MYO | Dominguez Toledo (Grupo Mayoral) | MAYORAL | Spain | ||
| DO | DOA | Dominicana de Aviación | DOMINICANA | Dominican Republic | defunct |
| E3 | DMO | Domodedovo Airlines | DOMODEDOVO | Russia | defunct |
| DVB | Don Avia | DONSEBAI | Kazakhstan | ||
| DON | Donair Flying Club | DONAIR | United Kingdom | ||
| D9 | DNV | Donavia | DONAVIA | Russia | formerly Aeroflot-Don |
| 5D | UDC | DonbassAero | DONBASS AERO | Ukraine | |
| DZ | EPA | Donghai Airlines | DONGHAI AIR | China | |
| DAD | Dorado Air | DORADO AIR | Dominican Republic | ||
| DOR | Dornier | DORNIER | Germany | ||
| DAV | Dornier Aviation Nigeria | DANA AIR | Nigeria | ||
| DOM | Dos Mundos | DOS MUNDOS | Dominican Republic | ||
| DCA | Dreamcatcher Airways | DREAM CATCHER | United Kingdom | ||
| KB | DRK | Druk Air | ROYAL BHUTAN | Bhutan | |
| DRE | Drummond Island Air | MICHIGAN | United States | ||
| DUB | Dubai Airwing | DUBAI | United Arab Emirates | ||
| DBK | Dubrovnik Air | SEAGULL | Croatia | ||
| DUK | Ducair | LION KING | Luxembourg | ||
| DBJ | Duchess of Brittany (Jersey) Limited | DUCHESS | United Kingdom | ||
| LPD | UK Royal/HRH Duke of York | LEOPARD | United Kingdom | ||
| DUN | Dun'Air | DUNAIR | Mauritania | ||
| PHD | Duncan Aviation | PANHANDLE | United States | ||
| VVF | Dunyaya Bakis Hava Tasimaciligi | WORLDFOCUS | Turkey | ||
| DUO | Duo Airways | FLY DUO | United Kingdom | ||
| DJE | Durango Jet | DURANGO JET | Mexico | ||
| DNL | Dutch Antilles Express | DUTCH ANTILLES | Netherlands Antilles | ||
| DCE | Dutch Caribbean Express | DUTCH CARIBBEAN | Netherlands Antilles | ||
| DBR | Dutchbird | DUTCHBIRD | Netherlands | ICAO code allocated to another company, call sign no longer allocated | |
| DBR | Dobrolet LLC | DOBROLET | Russia | Defunct, ICAO code still allocated (2017) | |
| DFS | Dwyer Aircraft Services | DWYAIR | United States | ||
| XDY | Dynair Services | United States | |||
| DNR | Dynamair Aviation | DYNAMAIR | Canada | ||
| DYE | Dynamic Air | DYNAMIC | Netherlands | ICAO code and call sign no longer allocated | |
| DYA | Dynamic Airways | DYNAMIC AIR | United States | ||
| DI | BAG | Dba | SPEEDWAY | Germany | Merged into Air Berlin
|
| EAV | Eagle Airlines Luftverkehrsges | MAYFLOWER | Austria | ||
| ABU | Eagle Aviation Services | United States | |||
| ISL | Eastland Air Services (Flugfélag Austurlands) | EASTLAND | Iceland | 2022 | |
| EBF | Echo Airlines | Bahamas | 2014[22] | ||
| MQ | ENY | Envoy Air | ENVOY | United States | 2014[22] |
| ENK | Executive Airlink | SUNBIRD | United States | Allocated in 2014[23] | |
| EL | ELB | Ellinair | ELLINAIR HELLAS | Greece | |
| ELN | Eleron Aviation Company | ELERON | Ukraine | ||
| ECC | Eclair Aviation | ECLAIR | Czech Republic | ||
| ELU | Egyptian Leisure Airlines | EGYPTIAN LEISURE | Egypt | ||
| 9E | EDV | Endeavor Air | ENDEAVOR | United States | |
| MNU | Elite Airways | MAINER | United States | ||
| Europe Jet | EUROPE JET | Turkey | |||
| E1 | Everbread | United Kingdom | |||
| EHD | E H Darby Aviation | PLATINUM AIR | United States | ||
| 1C | Electronic Data Systems | Switzerland | |||
| 1Y | Electronic Data Systems | United States | |||
| EXW | Executive Airlines Services | ECHOLINE | Nigeria | ||
| EFS | EFAOS- Agencia De Viagens e Turismo | EFAOS | Angola | ||
| EFD | Eisele Flugdienst | EVER FLIGHT | Germany | ||
| FSD | EFS-Flugservice | FLUGSERVICE | Germany | ||
| EIS | EIS Aircraft | COOL | Germany | ||
| IAG | EPAG | EPAG | France | ||
| ESI | ESI Eliservizi Italiani | ELISERVIZI | Italy | ||
| EUY | EU Airways | EUROAIRWAYS | Ireland | ||
| VE | EUJ | EUjet | UNION JET | Ireland | defunct |
| ICR | Eagle Aero | ICARUS FLIGHTS | United States | ||
| FEI | Eagle Air | ARCTIC EAGLE | Iceland | ||
| Eagle Air | Indonesia | ||||
| EGR | Eagle Air | EAGLE SIERRA | Sierra Leone | ||
| EFL | Eagle Air | FLYING EAGLE | Tanzania | defunct 2002 | |
| H7 | EGU | Eagle Air | AFRICAN EAGLE | Uganda | |
| NZ | EAG | Eagle Airways | EAGLE | New Zealand | |
| EGX | Eagle Air Company | THAI EAGLE | Thailand | ||
| GYP | Eagle Aviation | GYPSY | United Kingdom | ||
| EGN | Eagle Aviation France | FRENCH EAGLE | France | ||
| EES | Eagle Express | Serbia | 2014[22] | ||
| 9A | EZX | Eagle Express Air Charter | EAGLEXPRESS | Malaysia | |
| SEG | Eagle International | SEN-EAGLE | Senegal | ||
| EGJ |
|