| 1 | U4 | Burjat Airlines | ICAO: BUT, Callsign: Buravia, | RUS | AVCODES |
| 2 | U4 | Buddha Air Pvt. Ltd. | ICAO: BHA, Callsign: Buddha Air, | NEP | AVCODES |
| 3 | U4 | Progress Multitrade Co. Ltd. | ICAO: PMT, Callsign: Multitrade, IATA Prefix: 253, Founded on 14 January 2003. AOC granted 14 October 2003. Ceased operations during 2008. | K | AVCODES |
| 4 | U4 | Bond Air Cargo, LLC | ICAO: BCU, Callsign: Bacair, IATA Prefix: 029, IATA Designator changed from B7*. | USA | AVCODES |
