| 1 | CXS | Boston-Maine Airways Corp. d/b/a Pan Am Clipper Connection | IATA: E9, Callsign: Clipper Express, Founded in 1999. Ceased operations in 2008. ICAO Designator and Callsign changed to PXS / Panam Express | USA | AVCODES |
| 2 | CXS | Boston-Maine Airways | IATA: E9 | | ICAO1 |
| 3 | CXS | CHESHIRE EXECUTIVE SEDAN SERVICE | | | SCAC4 |
| 4 | CXSA | CAB EXPRESS SA DE CV | | | SCAC4 |
| 5 | CXSE | CASTRO TRANSPORTATION SERVICES | | | SCAC4 |
| 6 | CXSF | C TRANSPORT SERVICES INC | | | SCAC4 |
| 7 | CXSH | CHANG XIN SHIPPING CO LTD. | | | SCAC3 |
| 8 | CXSH | COX SHAVINGS INC | | | SCAC4 |
| 9 | CXSI | CONCORDE SHIPPING INC | | | SCAC3 |
| 10 | CXSM | CONTRERAS | | | SCAC4 |
| 11 | CXSN | CTS | | | SCAC4 |
| 12 | CXSQ | CS EXPRESS SERVICES INC | | | SCAC4 |
| 13 | CXSS | C & S EXPRESS INC | | | SCAC3 |
| 14 | CXST | CARRIER EXPRESS | | | SCAC3 |
| 15 | CXST | COXONS TOWING SERVICE (2000) LTD | | | SCAC4 |
| 16 | CXSU | SEACO SRL | | BDS | BIC |
| 17 | CXSU | CRONOS EQUIPMENT (BERMUDA) LTD | | | SCAC4 |
| 18 | CXSV | CANPOTEX SHIPPING SERVICES LIMITED | | | SCAC4 |
