| 1 | SZS | Scandinavian Airlines Ireland Limited | IATA: SL, Callsign: Spinnaker, Name changed to Scandinavian Airlines Ireland Limited d/b/a SAS Connect w.e.f. 28 September 2021. | IRL | AVCODES |
| 2 | SZS | Scandinavian Airlines Ireland Limited d/b/a SAS Connect | IATA: SL, Callsign: Spinnaker, Name changed from Scandinavian Airlines Ireland Limited w.e.f. 28 September 2021. | IRL | AVCODES |
| 3 | SZSB | SCHNITZER STEEL BC INC | | | SCAC4 |
| 4 | SZSD | SEVEN ZERO SEVEN SIX TWO ZERO SEVEN | | | SCAC4 |
| 5 | SZSE | SPECIALIZED SERVICES TRANSPORTATION | | | SCAC4 |
| 6 | SZSO | SHENZHEN SHINING OCEAN INTERNATIONA | | | SCAC4 |
| 7 | SZSR | SANCHEZ, SALVADOR | | | SCAC4 |
| 8 | SZSV | SPECIALIZED SERVICES INC | | | SCAC4 |
| 9 | SZSW | SIX ZERO SEVEN TWO THREE SEVEN (607 | | | SCAC4 |
