| Airline Name | ICAO | IATA | Callsign | Country |
| AB Airlines | AZX | 7L | AZTEC AIR | United Kingdom |
| Aba Air | ABP | BAIR | Czech Republic | |
| Abelag Aviation | AAB | Belgium | ||
| ABS Jets | ABP | BAIR | Czech Republic | |
| ABSA Cargo | TUS | M3 | TURISMO | Brazil |
| Abu Dhabi Aviation | AXU | United Arab Emirates | ||
| ABX Air | ABX | GB | ABEX | United States |
| ACA Private Shuttle | United States | |||
| Access Air | CYD | ZA | CYCLONE | United States |
| ACES Aerolineas Centrales de Colombia | AES | VX | Colombia | |
| ACG Air Cargo Germany | ACX | LOADMASTER | Germany | |
| ACT Airlines | RUN | 9T | CARGO TURK | Turkey |
| Acvila Air | RRM | WZ | AIR ROMANIA | Romania |
| Ada Air | ADE | ZY | Albania | |
| Adam Air | DHI | KI | ADAM SKY | Indonesia |
| ADC Airlines | ADK | Z7 | ADCO | Nigeria |
| Adorna Airways | Malaysia | |||
| Adria Airways | ADR | JP | ADRIA | Slovenia |
| AeBal (Spanair Link) | ABH | DF | AIR BALEAR | Spain |
| Aegean Airlines | AEE | A3 | AEGEAN | Greece |
| Aegean Aviation | AEE | A3 | Greece | |
| Aegean Cronus Airlines | Greece | |||
| Aer Arann | REA | RE | AER ARANN | Ireland |
| Aer Lingus | EIN | EI | SHAMROCK | Ireland |
| AERFI Group | AGP | Ireland | ||
| Aeris | AIS | SH | France | |
| Aermediterranea | BQI | BQ | Italy | |
| Aero Africa | RFO | Swaziland | ||
| Aero Airlines | EAY | EE | Estonia | |
| Aero Asia International | RSO | E4 | AERO ASIA | Pakistan |
| Aero California | SER | JR | AEROCALIFORNIA | Mexico |
| Aero Caribbean | CRN | 7L | Cuba | |
| Aero Condor Peru | CDP | Q6 | AERO CONDOR | Peru |
| Aero Continente | ACQ | N6 | Peru | |
| Aero Continente Chile | NTI | C7 | Chile | |
| Aero Costa Rica | AEK | Costa Rica | ||
| Aero Flight | ARF | GV | AERO FOX | Germany |
| Aero Honduras | HON | Honduras | ||
| Aero Lloyd | AEF | YP | AERO LLOYD | Germany |
| Aero Malaysiana | Malaysia | |||
| Aero Mongolia | MNG | Mongolia | ||
| Aero Quetzal | Guatemala | |||
| Aero Republica | RPB | P5 | AEROREPúBLICA | Colombia |
| Aero Santa | ASP | UJ | Peru | |
| Aero Services Executive | BES | W4 | France | |
| Aero-Dienst | ADN | AERODIENST | Germany | |
| Aero-Service | RSR | BF | CONGOSERV | Congo |
| Aerocancun | ACU | Mexico | ||
| Aerocaribe | CBE | QA | Mexico | |
| Aerocondor | OD | Colombia | ||
| Aerocondor | ARD | 2B | Portugal | |
| AeroContractors Company of Nigeria | NIG | AJ | Nigeria | |
| Aerodynamics Malaga | DNC | Spain | ||
| Aeroel Airways | ROL | Israel | ||
| Aeroflot - Russian Airlines | AFL | SU | AEROFLOT | Russian Federation |
| Aeroflot - Soviet Airlines | AFL | SU | AEROFLOT | USSR, Union Of Soviet Socialist Republics |
| Aeroflot Cargo | RCF | SU | Russian Federation | |
| Aeroflot-Don | DNV | D9 | Russian Federation | |
| Aeroflot-Nord | AUL | 5N | DVINA | Russian Federation |
| Aerogal Aerolineas Galapagos | GLG | 2K | Ecuador | |
| Aerogaviota | GTV | Cuba | ||
| Aeroland | AEN | 3S | Greece | |
| Aeroleasing | FPG | FP | Switzerland | |
| Aerolínea Principal | PCP | Chile | ||
| Aerolineas | ARG | AR | ARGENTINA | Argentina |
| Argentinas | ||||
| Aerolineas Del Sureste | SUE | Mexico | ||
| Aerolitoral | SLI | 5D | COSTERA | Mexico |
| AeroLogic | BOX | 3S | GERMAN CARGO | Germany |
| Aerolyon | AEY | 4Q | France | |
| Aeromar | TAO | VW | Mexico | |
| Aeromar Airlines | ROM | BQ | Dominican Republic | |
| Aeromaritime | QKL | QK | France | |
| Aeromexico | AMX | AM | Mexico | |
| Aeromextour | Mexico | |||
| Aeromist-Kharkiv | AHW | Ukraine | ||
| Aeromonterrey | MOT | Mexico | ||
| Aeroperlas | APP | WL | AEROPERLAS | Panama |
| Aeroperu | PLI | PL | Peru | |
| Aeroposta | RPO | Argentina | ||
| Aeropostal | LAV | VH | AL VEN | Venezuela |
| Aeropostale | ARP | 5S | France | |
| AeroRescue | Australia | |||
| Aerostar | UAR | Ukraine | ||
| Aerosucre | KRE | 6N | Colombia | |
| Aerosur | RSU | Bolivia | ||
| Aerosvit Airlines | AEW | VV | AEROSVIT | Ukraine |
| Aerosweet Airlines | AEW | VV | Ukraine | |
| Aerotour | France | |||
| Aerotransporte de Carga Union | TNO | 6R | Mexico | |
| Aerotropical | TOC | TROPICMEX | Mexico | |
| Aerovias DAP | DAP | Chile | ||
| Aerovista Airlines | AAP | Kyrgyzstan | ||
| Aerovista Gulf Express | VGF | VISTA GULF | United Arab Emirates | |
| Aerowings | AWG | Antigua And Barbuda | ||
| Africa One | CFR | Uganda | ||
| Africa West | WTA | FK | Togo |