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.
| IATA | ICAO | Airline | Call sign | Country | Comments |
|---|---|---|---|---|---|
| DGA | Yellow River Delta General Aviation | YELLOW RIVER | China | ||
| YRG | Yak Air | YAKAIR GEORGIA | Georgia | ||
| AKY | Yak-Service | YAK-SERVICE | Russia | ||
| YAK | Yakolev | YAK AVIA | Russia | Yak Design Bureau | |
| YL | LLM | Yamal Airlines | YAMAL | Russia | |
| R3 | SYL | Yakutia Airlines | AIR YAKUTIA | Russia | |
| CYG | Yana Airlines | VICAIR | Cambodia | ||
| AYG | Yangon Airways | AIR YANGON | Burma | ||
| Y8 | YZR | Suparna Airlines | YANGTZE RIVER | China | Former name: Yangtze River Express |
| LYH | Yankee Lima Helicopteres | HELIGUYANE | France | ||
| MHD | Yas Air Kish | YAS AIR | Iran | ||
| Y0 | EMJ | Yellow Air Taxi/Friendship Airways | United States | ||
| ELW | Yellow Wings Air Services | YELLOW WINGS | Kenya | ||
| IY | IYE | Yemenia | YEMENI | Yemen | |
| ERV | Yerevan-Avia | YEREVAN-AVIA | Armenia | ||
| YT | NYT | Yeti Airlines | YETI AIRLINES | Nepal | Domestic |
| YFS | Young Flying Service | YOUNG AIR | United States | ||
| AYU | Yuhi Air Lines | Japan | |||
| AYE | Yunnan Yingan Airlines | AIR YING AN | China | ||
| 4Y | TUD | Yute Air Alaska | TUNDRA | United States | defunct 2017 |
| UGN | Yuzhnaya Aircompany | PLUTON | Kazakhstan | ||
| 2N | UMK | Yuzhmashavia | YUZMASH | Ukraine |
