| 1 | DAL | Delta Air Lines, Inc. | IATA: DL, Callsign: Delta, IATA Prefix: 006, | USA | AVCODES |
| 2 | DAL | Delta Air Lines | IATA: DL | | ICAO1 |
| 3 | DAL | Delta Air Line | Real: DAL, DL | USA | TRAFFIC |
| 4 | DALA | DALLAS METRO FREIGHT INC | | | SCAC4 |
| 5 | DALA | Ludwig Dalacker& Sohn , Inh. Kurt Dalacker | | DE | VKM |
| 6 | Dalatåg | Dalatåg AB | 1991 - 1996 | S | svenska-lok.se |
| 7 | DALC | DALINGER OIL | | | SCAC4 |
| 8 | DALE | DALES EQUIPMENT TRANSPORT INC | | | SCAC4 |
| 9 | DALF | DAL FUEL OIL CO LLC | | | SCAC4 |
| 10 | DALH | DASHCO LOGISTICS INC | | | SCAC4 |
| 11 | DALI | DALIAN TIGER SHIPPING LIMITED | | | SCAC4 |
| 12 | DALIAN | Dalian Metro | | PRC | TRAFFIC |
| 13 | DALK | DAM ASSOCIATES LLC | | | SCAC4 |
| 14 | DALM | DALOMAR SHIPPING S A | | | SCAC4 |
| 15 | DALM | Acciaierie Dalmine | | I | TRAFFIC |
| 16 | DALMINE | Dalmine Steel Works | | I | TRAFFIC |
| 17 | DALP | DALPE, JOCELYN TRANSPORT INC | | | SCAC4 |
| 18 | DALS | DALE, ALLAN INDUSTRIES LTD | | | SCAC4 |
| 19 | DALT | Dallas Terminal Ry. | added 7/2004; eliminated 10/2004; 7/2005 | | NAKINA |
| 20 | DALT | DALLAS TERMINAL RAILWAY | | | PWRC |
| 21 | DALT | Dallas Terminal Railway | | | RSRV |
| 22 | DALT | DALLAS TERMINAL RAILWAY | | | SCAC4 |
| 23 | DALU | D'AMICO SOC DI NAVIGAZIONE | | | SCAC1 |
| 24 | DALU | CP SHIPS | | | SCAC4 |
| 25 | DALX | Dominion Alkali & Chemical Co., Ltd. | 1/1950-1/1952; eliminated 4/1953 | | NAKINA |
| 26 | DALX | Daly Refining Co. | 7/1937-1/1945; 1/1946 (not listed) | | NAKINA |
| 27 | DALX | Daly Refining Co. | Apr-38 | | NRHS |
| 28 | DALX | Dominion Alkali & Chemical Co., Ltd. | Jan-52 | | NRHS |
| 29 | DALX | *DALY REFINING CO. | | | PWRC |
| 30 | DALX | *DOMINION ALKALI & CHEMICAL CO. LTD. | | | PWRC |
| 31 | DALY | DAILY MOTOR FREIGHT, INC | | | SCAC1 |
| 32 | DALY | D & A LOGISTICS LLC | | | SCAC4 |
| 33 | DALZ | D & A LEASING INC. | | | PWRC |
| 34 | DALZ | D and A Leasing | | | RSRV |
| 35 | DALZ | D & A LEASING INC | | | SCAC4 |
