| ICAO | IATA | NAME |
|---|
| WAD | | Waddington FTU |
| CGG | | Walmart Aviation |
| WAS | | Walsten Air Services |
| GOT | | Walter I Linkoping |
| WPT | | Wapiti Aviation |
| ATX | | Warwickshire Aerocentre Ltd. |
| WSG | WT | Wasaya Airways |
| 7W | Wayraperú |
| WDL | W1 | WDL Aviation |
| WTC | | Weasua Air Transport Company |
| WEB | WJ | WebJet Linhas Aéreas |
| TDB | | Welch Aviation |
| WLC | 2W | Welcome Air |
| BLW | | Wermlandsflyg AB |
| WCB | | West Africa Airlines |
| WTF | | West African Air Transport |
| WSF | WZ | West African Airlines |
| WAC | | West African Cargo Airlines |
| WLX | | West Air Luxembourg |
| SWN | PT | West Air Sweden |
| WCW | YH | West Caribbean Airways |
| WCR | | West Caribbean Costa Rica |
| 8O | West Coast Air |
| | West Coast Airlines |
| WCG | | West Coast Airlines |
| WCA | | West Coast Airways |
| TEE | | West Freugh DTEO |
| WEW | | West Wind Aviation |
| WAA | | Westair Aviation |
| PCM | | Westair Industries |
| BLK | | Westcoast Energy |
| CXP | XP | Western |
| WST | | Western Air |
| NPC | | Western Air Couriers |
| WAE | | Western Air Express |
| WAL | WA | Western Airlines |
| WAL | | Western Arctic Air |
| WTV | | Western Aviators |
| WES | | Western Express Air Lines |
| KMR | | Western Pacific Airlines |
| WPA | | Western Pacific Airservice |
| WSL | | Westflight Aviation |
| WSA | | Westgates Airlines |
| WJA | WS | WestJet |
| WHE | | Westland Helicopters |
| WTP | | Westpoint Air |
| WWD | CN | Westward Airways |
| WHT | | White |
| WEA | | White Eagle Aviation |
| WRA | | White River Air Services |
| WWL | | Whyalla Airlines |
| WIF | WF | Widerøe |
| WIG | | Wiggins Airways |
| WHS | | Wiking Helikopter Service |
| WLS | | Williams Air |
| WGP | | Williams Grand Prix Engineering |
| WDA | | Wimbi Dira Airways |
| WNA | | Winair |
| JET | IV | Wind Jet |
| WSI | | Wind Spirit Air |
| QGA | | Windrose Air |
| WIA | | Windward Islands Airways International |
| WON | 1W | Wings Air |
| WAT | | Wings Air Transport |
| WAW | | Wings Airways |
| WOL | | Wings Aviation |
| WEX | | Wings Express |
| WAK | K5 | Wings of Alaska |
| WLB | | Wings of Lebanon Aviation |
| WIN | | Winlink |
| WAG | | Wisconsin Air National Guard |
| WSM | | Wisman Aviation |
| WIT | | Wittering FTU |
| WVL | W6 | Wizz Air |
| WZZ | | Wizz Air Hungary |
| WNR | | Wondair on Demand Aviation |
| CWY | | Woodgate Executive Air Charter |
| WOA | WO | World Airways |
| XWW | | World Weatherwatch |
| WWM | | World Wing Aviation |
| 1P | Worldspan |
| CSW | | Worldwide Air Charter Systems |
| WWS | | Worldwide Aviation Services |
| WWI | | Worldwide Jet Charter |
| WRR | | WRA Inc |
| WRT | | Wright Air Lines |
| WRF | 8V | Wright Air Service |
| XWS | | WSI Corporation |
| CWU | | Wuhan Airlines |
| WYC | | Wycombe Air Centre |
| WYG | | Wyoming Airlines |
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