| 1 | SXS | SunExpress | IATA: XQ | | ICAO1 |
| 2 | SXS | SunExpress | | TR | TRAFFIC |
| 3 | SXSC | ST CROIX STORAGE & TRANSFER COMPANY | | | SCAC4 |
| 4 | SXSH | STRAIGHT SHOT EXPRESS | | | SCAC4 |
| 5 | SXSK | S & M EXPRESS TRUCKING INC | | | SCAC4 |
| 6 | SXSL | SES | | | SCAC4 |
| 7 | SXSM | SUPERIOR TRANSPORTATION SYSTEMS | | | SCAC4 |
| 8 | SXSQ | SOUTHEAST TRANSPORTATION SYSTEMS IN | | | SCAC4 |
| 9 | SXSR | SURETRANS CORP | | | SCAC4 |
| 10 | SXSS | STERLING EXPRESS SERVICES INC | | | SCAC4 |
| 11 | SXSU | SOLVAY SPECIALTY POLYMERS ITALY SPA | | I | BIC |
| 12 | SXSU | SOLVAY SOLEXIS SA | | | SCAC4 |
| 13 | SXSX | Ron Johnson & Associates | 1/1994-7/2005 (not listed) | | NAKINA |
| 14 | SXSX | Winter Bird Corp. | added 1/2007 | | NAKINA |
| 15 | SXSX | Ron Johnson & Associates | 1/94-7/2000 | | NRHS |
| 16 | SXSX | WINTER BIRD CORP. [RON JOHNSON & ASSOCIATES] | | | PWRC |
| 17 | SXSX | Ron Johnson and Associates | | | RSRV |
| 18 | SXSX | WINTER BIRD CORPORATION | | | SCAC4 |
| 19 | SXSY | SAR TRANSPORT SYSTEMS INC | | | SCAC4 |
