| 1 | RSX | Red Sea Airlines | Callsign: Red Sea, | ET | AVCODES |
| 2 | RSX | A.M. Richter Sons Co. | 7/1930-10/1957; eliminated 10/1959 | | NAKINA |
| 3 | RSX | A.M. Richter Sons Co. | 4/38-10/57; eliminated 10/59 | | NRHS |
| 4 | RSX | A. M. RICHTER SONS CO. | | | PWRC |
| 5 | RSXC | ROSIE EXPRESS CO | | | SCAC4 |
| 6 | RSXD | RS EXPEDITE INC | | | SCAC4 |
| 7 | RSXE | ROADSTAR EXPRESS INC | | | SCAC4 |
| 8 | RSXM | RUSBELS TRANSPORT | | | SCAC4 |
| 9 | RSXN | RISEN TRANSPORTATION INC | | | SCAC4 |
| 10 | RSXO | R S D TRANSPORTATION INC | | | SCAC4 |
| 11 | RSXP | RED STAR EXPRESS LINES OF QUEBEC (1 | | | SCAC3 |
| 12 | RSXQ | R & S EXPORT TRUCKING CORP | | | SCAC3 |
| 13 | RSXS | R & S EXPRESS | | | SCAC3 |
| 14 | RSXS | R & S EXPRESS | | | SCAC4 |
| 15 | RSXT | R S TRANSPORT | | | SCAC4 |
| 16 | RSXW | R & S XPRESS | | | SCAC4 |
| 17 | RSXX | RAIL STUFF LLC | | | SCAC4 |
