| 1 | CST | Coast Air K.S. | IATA: BX, Callsign: Coast Center, IATA Prefix: 970, ICAO callsign changed to Coast Air | N | AVCODES |
| 2 | CST | Coast Air K.S. | IATA: BX, Callsign: Coast Air, IATA Prefix: 970, Filed for bankruptcy on 23 January 2008. ICAO callsign changed from Coast Center | N | AVCODES |
| 3 | CST | Coast Aero Center | Callsign: Coast-Center, | N | AVCODES |
| 4 | CST | Shoreline Aviation | Callsign: Shoreline, | USA | AVCODES |
| 5 | CST | Coast Air | IATA: BX | | ICAO1 |
| 6 | CSTA | COSTA, JOHN M | | | SCAC3 |
| 7 | CSTB | CASTOR TRANSPORT LLC | | | SCAC4 |
| 8 | CSTC | COAST TO COAST TRANSPORTATION INC | | | SCAC3 |
| 9 | CSTC | CANSTAR TRUCKING CO LTD | | | SCAC4 |
| 10 | CSTD | CHRISTIE TRANSPORT LIMITED | | | SCAC3 |
| 11 | CSTE | CASTLE EXPRESS | | | SCAC3 |
| 12 | CSTE | CASTLE EXPRESS | | | SCAC4 |
| 13 | CSTF | C & S TRANSFER INC | | | SCAC3 |
| 14 | CSTG | CROSS STATE TOWING SERVICE | | | SCAC3 |
| 15 | CSTH | COSTICH, B. G.,& SONS, INC. | | | SCAC3 |
| 16 | CSTH | CAL STATE TRANSPORTATION | | | SCAC4 |
| 17 | CSTI | COAST TRANSPORTATION CO | | | SCAC3 |
| 18 | CSTI | CUSTOM ICE INC | | | SCAC4 |
| 19 | CSTK | CASA TRUCKING INC | | | SCAC4 |
| 20 | CSTL | CITY OF St. LOUIS | | | PWRC |
| 21 | CSTL | CASTLE ROCK TRANSFER | | | SCAC3 |
| 22 | CSTL | CIRCLE S TRANSPORT LTD | | | SCAC4 |
| 23 | CSTLP | Chicago, St. Louis & Pittsburgh Railroad | | USA | TRAFFIC |
| 24 | CSTM | CRYSTAL TRANSPORTATION INC | | | SCAC3 |
| 25 | CSTM | COOPER & SON TRANSPORTATION | | | SCAC4 |
| 26 | CSTN | CASTINE MOTOR SERVICE | | | SCAC3 |
| 27 | CSTN | CASTINE, FRANK L INC | | | SCAC4 |
| 28 | CSTO | COAST MOVING AND STORAGE CO INC | | | SCAC3 |
| 29 | CSTP | C & S TRANSPORTATION INC | | | SCAC3 |
| 30 | CSTP | CORNERSTONE TRANSPORT LLC | | | SCAC4 |
| 31 | CSTP | Consorzio Salernitano Trasporti Pubblici | City: Salerno | I | TRAFFIC |
| 32 | CSTQ | CASCADE TRANSPORT INC | | | SCAC3 |
| 33 | CSTQ | CASCADE TRANSPORT INC | | | SCAC4 |
| 34 | CSTR | CHESTER TRANSFER, INC | | | SCAC3 |
| 35 | CSTS | CHRISTENSEN BROTHERS | | | SCAC3 |
| 36 | CSTS | CENTRAL STATES DISTRIBUTION SERVICE | | | SCAC4 |
| 37 | CSTT | CAPSTICKS TRANSPORT INCORPORATED | | | SCAC4 |
| 38 | CSTU | CONTAINER-SERVICE FRIEDRICH TIEMANN GMBH | | D | BIC |
| 39 | CSTU | CONTAINER SERVICE FRIEDRICH TIEMANN | | | SCAC4 |
| 40 | CSTV | C AND S TRANSPORT | | | SCAC3 |
| 41 | CSTV | C & S TRUCKING & SALVAGE INC | | | SCAC4 |
| 42 | CSTW | COASTWISE LINE | | | SCAC3 |
| 43 | CSTX | Canada Starch Co. Inc. | added 4/1981; 1/1994; eliminated 1/1995; 7/2000-7/2005 | | NAKINA |
| 44 | CSTX | Canada Starch Co., Ltd. | 7/1937-1/1980; eliminated 4/1981 | | NAKINA |
| 45 | CSTX | Canada Starch Co., Ltd. | 4/38-1/80; eliminated 4/81 | | NRHS |
| 46 | CSTX | Canada Starch Co. Inc. | added 4/81; 1/94; eliminated 1/95; 7/2000 | | NRHS |
| 47 | CSTX | CANADA STARCH COMPANY INC. (CASCO) | | | PWRC |
| 48 | CSTX | Canadian Starch (Casco) | | | RSRV |
| 49 | CSTX | CANADA STARCH CO LTD THE | | | SCAC3 |
| 50 | CSTX | CANADA STARCH COMPANY INC | | | SCAC4 |
| 51 | CSTY | CASEYS TRUCKING SERVICE | | | SCAC3 |
| 52 | CSTY | CHRISTY TRANSPORT LLC | | | SCAC4 |
