| 1 | DYA | Dynamic Aviation, LLC d/b/a Dynamic International Airways | IATA: 2D, Callsign: Dynamic Air, IATA Prefix: 054, Name changed to Dynamic International Airways, LLC. Founded in 2010. | USA | AVCODES |
| 2 | DYA | Dynamic International Airways, LLC | IATA: 2D, Callsign: Dynamic Air, IATA Prefix: 054, Name changed to Eastern Airlines, LLC w.e.f. 25 June 2018. Name changed from Dynamic Aviation, LLC d/b/a Dynamic International Airways. Founded in 2010. | USA | AVCODES |
| 3 | DYAC | DIAMOND HEAVY HAUL INC | | | SCAC4 |
| 4 | DYAL | DAYAL TRANSPORT SYSTEMS INC | | | SCAC4 |
| 5 | DYAM | DYAM TRANSPORT INC | | | SCAC4 |
| 6 | DYAN | DYNAMIC AVIATION | | | SCAC4 |
| 7 | DYAS | DYNAMO EXPRESS | | | SCAC4 |
