| 1 | 4Y | Flight Alaska, Inc., d/b/a Yute Air Alaska, Inc. | ICAO: UYA, Callsign: Yute Air, Merged operations in Ravn Alaska on 05 March 2017. | USA | AVCODES |
| 2 | 4Y | Airbus Transport International | ICAO: BGA, Callsign: Super Transport, Airbus Industrie's Bulga's | F | AVCODES |
| 3 | 4Y | Darwin Airline SA | ICAO: DWT, Founded in 2003. IATA designator changed to 0D | CH | AVCODES |
| 4 | 4Y | EW Discover GmbH t/a Eurowings Discover | ICAO: OCN, Callsign: Ocean, Subsidiary of Lufthansa. Name changed from Ocean GmbH. | D | AVCODES |
