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| 21 Compagnies | Compagnie (100) | Nb | Co | Nation | Notes |
| Wardair Canada | Wardair Canada | 30 | 0 | Canada | Revendu |
| Wamos Air | Wamos Air | 11 | 0 | Espagne | |
| WebJet | WebJet | 30 | 0 | Brésil | Fermé |
| West Air | West Air | 37 | 0 | Chine | |
| West Air Sweden | West Air Sweden | 3 | 0 | Suède | |
| Westates Airlines | Westates Airlines | 1 | 0 | USA | Fermé |
| West Atlantic | West Atlantic | 56 | 0 | Suède | |
| Western Airlines | Western Airlines | 309 | 0 | USA | Fusion |
| Western Global Airlines | Western Global Airlines | 19 | 2 | USA (Faillite) | Cargo |
| Western Pacific Airlines | Western Pacific Airlines | 22 | 2 | USA | Faillite |
| Westjet | Wesjet | 169 | 54 | Canada | |
| WestJet Encore | WestJet Encore | 47 | 0 | Canada | |
| White Eagle Aviation | White Eagle Aviation | 4 | 0 | Pologne | Fermé |
| WindRose Aviation | WindRose Aviation | 11 | 0 | Ukraine | |
| Wien Air Alaska | Wien Air Alaska | 28 | 0 | USA | Fusion |
| Wizz Air | Wizz Air | 135 | 229 | Hongrie | |
| World Airlines | World Airlines | 2 | 0 | UK | Fermé |
| World Airways | World Airways | 12 | 0 | USA | Fermé |
| WOW Air | WOW Air | 20 | 4 | Islande | |
| World2fly | World2fly | 4 | 0 | Espagne |
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