| 1 | 6U | Air Ukraine | ICAO: UKR, Callsign: Air Ukraine, IATA Prefix: 891, Founded in 1992. Suspended operations in 2002. AOC revoked in 2004. | UA | AVCODES |
| 2 | 6U | ACG Air Cargo Germany GmbH | ICAO: ACX, Callsign: Loadmaster, IATA Prefix: 730, Founded in 2008. Commenced operations during 2009. Ceased operations September 2013. | D | AVCODES |
| 3 | 6U | Unique Air | IATA Prefix: 296, Designator 6U recalled by IATA. | IND | AVCODES |
