| 1 | DIA | Direct Air, Inc. | Callsign: Blue sky, Designator HB recalled by IATA | USA | AVCODES |
| 2 | DIA | Direct Air, Inc. | IATA: HB, Callsign: Blue sky, Designator HB recalled by IATA | USA | AVCODES |
| 3 | DIA | Direct Air | | | ICAO1 |
| 4 | DIAA | DIAMOND STATE TRUCKING INC | | | SCAC4 |
| 5 | DIAB | DIABLO TRANSPORTATION, INC | | | SCAC1 |
| 6 | DIAB | DI APPOLO TRUCKING LLC | | | SCAC4 |
| 7 | DIAC | DIACON TECHNOLOGIES INC | | | SCAC4 |
| 8 | DIAL | DIAZ, LUIS | | | SCAC4 |
| 9 | DIAM | DIAMOND MATERIALS LLC | | | SCAC4 |
| 10 | DIAMO | DIAMO, státní podnik | | CZ | VKM |
| 11 | DIAN | DIANA TRUCK LINES, INC | | | SCAC1 |
| 12 | DIAN | DIANA TRUCKING CORP | | | SCAC4 |
| 13 | DIAQ | DIXIE ONE TRUCKING LLC | | | SCAC4 |
| 14 | DIAR | DOMESTIC INTERMODAL AMERICA INC | | | SCAC4 |
| 15 | DIAT | DIAMOND TRANSPORTATION SYSTEM, INC | | | SCAC4 |
| 16 | DIAW | DIABLO TRUCKING LLC | | | SCAC4 |
