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 |
|---|---|---|---|---|---|
| WD | WDL | WDL Aviation | WDL | Germany | |
| WRR | WRA Inc | WRAP AIR | United States | ||
| XWS | WSI Corporation | United States | |||
| CGG | Walmart Aviation | CHARGE | United States | ||
| WAS | Walsten Air Services | WALSTEN | Canada | ||
| GOT | WaltAir | GOTHIC | Sweden | ||
| WPT | Wapiti Aviation | WAPITI | Canada | ||
| WAV | Warbelow's Air Ventures | WARBELOW | United States | ||
| ATX | Warwickshire Aerocentre Ltd. | AIRTAX | United Kingdom | ||
| WT | WSG | Wasaya Airways | WASAYA | Canada | |
| Wayraperú | WAYRAPERÚ | Peru | |||
| WTC | Weasua Air Transport Company | WATCO | Liberia | ||
| WH | WEB | WebJet Linhas Aéreas | WEB-BRASIL | Brazil | |
| TDB | Welch Aviation | THUNDER BAY | United States | ||
| 2W | WLC | Welcome Air | WELCOMEAIR | Austria | |
| BLW | Wermlandsflyg AB | BLUESTAR | Sweden | ||
| WCB | West Africa Airlines | KILO YANKEE | Ghana | ||
| WTF | West African Air Transport | WESTAF AIRTRANS | Senegal | ||
| WZ | WSF | West African Airlines | Benin | ||
| WAC | West African Cargo Airlines | WESTAF CARGO | Mauritania | ||
| PN | CHB | West Air (China) | WEST CHINA | China | |
| WLX | West Air Luxembourg | WEST LUX | Luxembourg | ||
| T2 | SWN | West Atlantic Sweden | AIR SWEDEN | Sweden | |
| YH | WCW | West Caribbean Airways | WEST | Colombia | |
| WCR | West Caribbean Costa Rica | WEST CARIBBEAN | Costa Rica | ||
| 8O | YWZ | West Coast Air | COAST AIR | Canada | |
| West Coast Airlines | United States | ||||
| WCG | West Coast Airlines | WHISKY INDIA | Ghana | ||
| WCA | West Coast Airways | WEST-LEONE | Sierra Leone | ||
| WCC | West Coast Charters | WEST COAST | United States | ||
| TEE | West Freugh DTEO | TEEBIRD | United Kingdom | ||
| WEW | West Wind Aviation | WESTWIND | Canada | ||
| WS | WJA | WestJet | WESTJET | Canada | |
| WAA | Westair Aviation | WESTAIR WINGS | Namibia | ||
| WSC | Westair Cargo Airlines | WESTCAR | Côte d'Ivoire | ||
| PCM | Westair Industries | PAC VALLEY | United States | ||
| BLK | Westcoast Energy | BLUE FLAME | Canada | ||
| ST* | STT | Western Aircraft, Inc | SAWTOOTH | United States | |
| WST | Western Air | WESTERN BAHAMAS | Bahamas | ||
| NPC | Western Air Couriers | NORPAC | United States | ||
| WAE | Western Air Express | WESTERN EXPRESS | United States | ||
| WA | WAL | Western Airlines | WESTERN | United States | defunct |
| WA | KLC | KLM Cityhopper | CITY | the Netherlands | |
| WAL | Western Arctic Air | WESTERN ARCTIC | Canada | ||
| WTV | Western Aviators | WESTAVIA | United States | ||
| AAE | Western Express Air | ARIZONA | United States | defunct in 2007 | |
| WES | Western Express Air Lines | WEST EX | Canada | ||
| WGN | Western Global Airlines | WESTERN GLOBAL | United States | Allocated in 2014 [1] | |
| W7 | KMR | Western Pacific Airlines | KOMSTAR | United States | |
| WPA | Western Pacific Airservice | WESTPAC | Solomon Islands | ||
| WSL | Westflight Aviation | WEST LINE | United Kingdom | ||
| WSA | Westgates Airlines | WESTATES | United States | ||
| WHE | Westland Helicopters | WESTLAND | United Kingdom | ||
| WTP | Westpoint Air | WESTPOINT | Canada | ||
| CN | WWD | Westward Airways | WESTWARD | United States | |
| WHT | White | WHITEJET | Portugal | ||
| WEA | White Eagle Aviation | WHITE EAGLE | Poland | ||
| WRA | White River Air Services | Canada | |||
| WWL | Whyalla Airlines | Australia | |||
| WF | WIF | Widerøe | WIDEROE | Norway | |
| WC | WAA | Wien Air Alaska | WIEN | United States | Wien Consolidated Airlines from 1968-1973 |
| WIG | Wiggins Airways | WIGGINS AIRWAYS | United States | ||
| WHS | Wiking Helikopter Service | WEEKING | Germany | ||
| WFO | Wilbur's Flight Operations | WILBURS | United States | ||
| WGP | Williams Grand Prix Engineering | GRAND PRIX | United Kingdom | ||
| WDA | Wimbi Dira Airways | WIMBI DIRA | Democratic Republic of Congo | ||
| WNA | Winair | WINAIR | United States | ||
| IV | JET | Wind Jet | GHIBLI | Italy | |
| WSI | Wind Spirit Air | WIND SPIRIT | United States | ||
| 7W | QGA | Windrose Air | QUADRIGA | Germany | |
| WIA | Windward Islands Airways International | WINDWARD | Netherlands | ||
| IW | WON | Wings Air | WINGS ABADI | Indonesia | Subsidiary of Lion Air |
| WAT | Wings Air Transport | Sudan | |||
| WAW | Wings Airways | WING SHUTTLE | United States | ||
| WOL | Wings Aviation | WINGJET | Guyana | ||
| WEX | Wings Express | WINGS EXPRESS | United States | ||
| WLB | Wings of Lebanon Aviation | WING LEBANON | Lebanon | ||
| WIN | Winlink | WINLINK | Saint Lucia | ||
| WAG | Wisconsin Air National Guard | United States | |||
| WSM | Wisman Aviation | WISMAN | United States | ||
| 8Z | WVL | Wizz Air Bulgaria | WIZZBUL | Bulgaria | defunct in 2011 |
| W6 | WZZ | Wizz Air | WIZZAIR | Hungary | |
| W4 | WMT | Wizz Air Malta | WIZZ AIR MALTA | Malta | |
| W9 | WUK | Wizz Air UK | WIZZ GO | United Kingdom | |
| WNR | Wondair on Demand Aviation | WONDAIR | Spain | ||
| CWY | Woodgate Aviation | CAUSEWAY | United Kingdom | ||
| WO | WOA | World Airways | WORLD | United States | |
| XWW | World Weatherwatch | Canada | |||
| WWM | World Wing Aviation | MANAS WING | Kyrgyzstan | ||
| 1P | Worldspan | United States | |||
| UI | CSW | SW Italia | SILKITALIA | Italy | |
| WWS | Worldwide Aviation Services | Pakistan | |||
| WWI | Worldwide Jet Charter | WORLDWIDE | United States | ||
| WW | WOW | WOW air | WOW air | Iceland | |
| WRT | Wright Airlines | WRIGHT-AIR | United States | defunct | |
| 8V | WRF | Wright Air Service | WRIGHT FLYER | United States | |
| CWU | Wuhan Airlines | WUHAN AIR | China | ||
| WYC | Wycombe Air Centre | WYCOMBE | United Kingdom | ||
| WYG | Wyoming Airlines | WYOMING | United States | ||
| KW | WAN | Wataniya Airways | WATANIYA | Kuwait | |
| 3W* | VNR | Wan Air | WANAIR | French Polynesia | defunct |
| WR | WEN | WestJet Encore | ENCORE | Canada | |
| WJ | JES | JetSmart Argentina | SMARTBIRD | Argentina |