| 1 | 4U | Germanwings GmbH | ICAO: GWI, Callsign: German Wings, Ceased operations on 07 April 2020. Name changed from Eurowings Flug GmbH. ICAO designator changed from EWF. ICAO callsign changed from Shark | D | AVCODES |
| 2 | 4U | Eurowings Flug GmbH | ICAO: EWF, Callsign: Shark, Name changed to Germanwings GmbH. ICAO designator changed to GWI. ICAO callsign changed to German Wings | D | AVCODES |
| 3 | 4U | Tavaj Transportes Aereos Regulares S/A d/b/a TAVAJ Linhas Aereas | ICAO: TVJ, Callsign: Tavaj, | BR | AVCODES |
| 4 | 4U | Kazan Airenterprise (Tatarstan Airlines) | ICAO: KAZ, Callsign: Air Tatarstan, | RUS | AVCODES |
