| 1 | SRL | AB Varmlandsflyg | IATA: T9, Callsign: Starline, Name changed to Swedline Express AB w.e.f. 01 December 2002. | S | AVCODES |
| 2 | SRL | Swedline Express AB | IATA: T9, Callsign: Starline, IATA designator changed to SM. Name changed from AB Varmlandsflyg w.e.f. 01 December 2002. | S | AVCODES |
| 3 | SRL | Swedline Express AB | IATA: SM, Callsign: Starline, IATA designator changed from T9*. Name changed from AB Varmlandsflyg w.e.f. 01 December 2002. | S | AVCODES |
| 4 | SRL | Swedline Express | IATA: SM | | ICAO1 |
| 5 | SRL | Servicios Aeronauticos Aero Personal | | | ICAO1 |
| 6 | SRL | Swift Refrigerator Line (General American Transportation Corp.) | 7/1935 | | NAKINA |
| 7 | SRL | SWIFT REFRIGERATOR LINES (EXPIRED) | | | PWRC |
| 8 | SRL | Swift Refrigerator Lines | | | RSRV |
| 9 | SRL | Stahlberg Roensch Leipzig GmbH | | DE | VKM |
| 10 | SRLB | SHEAROUSE LUMBER COMPANY | | | SCAC4 |
| 11 | SRLD | SORRELS TRUCKING COMPANY INCORPORAT | | | SCAC4 |
| 12 | SRLE | SORRENTO LOBSTER INC | | | SCAC4 |
| 13 | SRLF | SRL TRUCKING INC | | | SCAC4 |
| 14 | SRLG | STRATEGIC LOGISTICS INC | | | SCAC4 |
| 15 | SRLJ | SEVEN ROAD LOGISTICS INC | | | SCAC4 |
| 16 | SRLK | SWIFT RESOLUTE LTD | | | SCAC4 |
| 17 | SRLL | SHORELINE TRANSPORTATION OF ALABAMA | | | SCAC4 |
| 18 | SRLM | SUNRISE LOGISTICS INC | | | SCAC4 |
| 19 | SRLN | STARLINE | | | SCAC4 |
| 20 | SRLO | STROLLIN' R INC | | | SCAC4 |
| 21 | SRLU | SUPER RACK CO., LTD | | ROK | BIC |
| 22 | SRLW | SIERRA REDWOOD LLC | | | SCAC4 |
| 23 | SRLX | Swift Refrigerator Line (General American Transportation Corp.) (previously S.R.L.) | added 11/1934; 7/1935 | | NAKINA |
| 24 | SRLX | General American Transportation Corp. | 7/1937-7/1965 | | NAKINA |
| 25 | SRLX | Swift Refrigerator Line (General American Transportation Corp.) | 10/1966 | | NAKINA |
| 26 | SRLX | General American Transportation Corp. | 4/1970-1/1980; eliminated 10/1992 | | NAKINA |
| 27 | SRLX | Southern Rail Leasing, Inc. | 7/2000-7/2005 | | NAKINA |
| 28 | SRLX | Swift Refrigerator Line (General American Transportation Corp.) | Apr-38 | | NRHS |
| 29 | SRLX | General American Transportation Corp. | 1/52-7/65 | | NRHS |
| 30 | SRLX | Swift Refrigerator Line (General American Transportation Corp.) | Oct-66 | | NRHS |
| 31 | SRLX | General American Transportation Corp. | 4/70-1/80; eliminated 10/92 | | NRHS |
| 32 | SRLX | Southern Rail Leasing, Inc. | Jul-00 | | NRHS |
| 33 | SRLX | *(GATX) RETIRED 08-19-92 ATP (1569) [SWIFT REFRIGERATOR LINE (GATC)] | | | PWRC |
| 34 | SRLX | +SOUTHERN RAIL LEASING, INC. | | | PWRC |
| 35 | SRLX | General American Transportation Corporation (GATX) | | | RSRV |
| 36 | SRLX | Swift Refrigerator Line | | USA | TRAFFIC |
| 37 | SRLY | SANDY RIDGE LIVESTOCK | | | SCAC4 |
