Airlines — W
- WADWaddington FTU
- CGGWalmart Aviation
- WASWalsten Air Services
- GOTWalter I Linkoping
- WPTWapiti Aviation
- WAVWarbelow's Air Ventures
- ATXWarwickshire Aerocentre Ltd.
- WSGWasaya Airways
- KW1Wataniya Airways
- WDLWDL Aviation
- WTCWeasua Air Transport Company
- WEBWebJet Linhas A
- TDBWelch Aviation
- WLCWelcome Air
- BLWWermlandsflyg AB
- WCBWest Africa Airlines
- WTFWest African Air Transport
- WSFWest African Airlines
- WACWest African Cargo Airlines
- CHBWest Air China
- WLXWest Air Luxembourg
- SWNWest Air Sweden
- WCWWest Caribbean Airways
- WCRWest Caribbean Costa Rica
- WCGWest Coast Airlines
- WCAWest Coast Airways
- TEEWest Freugh DTEO
- WEWWest Wind Aviation
- WAAWestair Aviation
- WSCWestair Cargo Airlines
- PCMWestair Industries
- BLKWestcoast Energy
- WSTWestern Air
- NPCWestern Air Couriers
- WAEWestern Air Express
- WALWestern Airlines
- WALWestern Arctic Air
- WTVWestern Aviators
- WESWestern Express Air Lines
- KMRWestern Pacific Airlines
- WPAWestern Pacific Airservice
- WFXWestfalia Express VA
- WSLWestflight Aviation
- WSAWestgates Airlines
- WJAWestJet
- WENWestJet Encore
- WHEWestland Helicopters
- WTPWestpoint Air
- WWDWestward Airways
- WHTWhite
- WEAWhite Eagle Aviation
- WRAWhite River Air Services
- WTJWhitejets
- WWLWhyalla Airlines
- WIFWiderøe
- WIGWiggins Airways
- WHSWiking Helikopter Service
- WFOWilbur's Flight Operations
- WLSWilliams Air
- WGPWilliams Grand Prix Engineering
- WDAWimbi Dira Airways
- WNAWinair
- JETWind Jet
- WRCWind Rose Aviation
- WSIWind Spirit Air
- QGAWindrose Air
- WIAWindward Islands Airways International
- WONWings Air
- WATWings Air Transport
- WAWWings Airways
- WOLWings Aviation
- WEXWings Express
- WAKWings of Alaska
- WLBWings of Lebanon Aviation
- WINWinlink
- WAGWisconsin Air National Guard
- WSMWisman Aviation
- WITWittering FTU
- WZZWizz Air
- WVLWizz Air Hungary
- WAUWizz Air Ukraine
- WNRWondair on Demand Aviation
- CWYWoodgate Executive Air Charter
- WOAWorld Airways
- WE1World Experience Airline
- WSSWorld Scale Airlines
- XWWWorld Weatherwatch
- WWMWorld Wing Aviation
- WGCWorldways
- CSWWorldwide Air Charter Systems
- WWSWorldwide Aviation Services
- WWIWorldwide Jet Charter
- WRRWRA Inc
- WRTWright Air Lines
- WRFWright Air Service
- XWSWSI Corporation
- CWUWuhan Airlines
- WYCWycombe Air Centre
- WYGWyoming Airlines