| 1 | DLT | DLT Luftverkehrsgesellschaft mbH | IATA: DW, Callsign: DLT, | D | AVCODES |
| 2 | DLT | Dat Lite | Callsign: Datlite, Ceased operations. | LT | AVCODES |
| 3 | DLTB | DELANES TRUCK BROKERAGE INC | | | SCAC4 |
| 4 | DLTC | DOUBLE L TRUCKING & LIVESTOCK LLC | | | SCAC4 |
| 5 | DLTD | DELTA INDUSTRIAL SERVICES | | | SCAC4 |
| 6 | DLTE | DALTON ENTERPRISES INC | | | SCAC4 |
| 7 | DLTF | DELTA FUEL COMPANY INC | | | SCAC4 |
| 8 | DLTI | DE LOPEZ TRUCKING LLC | | | SCAC4 |
| 9 | DLTJ | DEL TRANSPORT LLC | | | SCAC4 |
| 10 | DLTK | DALTON TRUCKING INC | | | SCAC4 |
| 11 | DLTM | D L TERMINALS INC | | | SCAC4 |
| 12 | DLTP | DELTA TRANSPORT INC | | | SCAC4 |
| 13 | DLTQ | DAVIDSON LOG & TIMBER ARTISANS | | | SCAC4 |
| 14 | DLTU | DALREFTRANS LTD | | RUS | BIC |
| 15 | DLTU | DALREFTRANS LTD | | | SCAC4 |
| 16 | DLTX | Dale L. Thornborough | 1/1980; added 7/1980; eliminated 10/1990; 1/1994-7/2005 (not listed) | | NAKINA |
| 17 | DLTX | Dale L. Thornborough | 1/80; added 7/80; eliminated 10/90; 1/94-7/2000 | | NRHS |
| 18 | DLTX | DALE L. THORNBOROUGH | | | PWRC |
| 19 | DLTX | Dale L. Thornborough | | | RSRV |
| 20 | DLTX | DALE L. THORNBOROUGH | | | SCAC4 |
| 21 | DLTY | DALTON OIL COMPANY | | | SCAC4 |
