Showing 394 registered airlines with a combined fleet of 1,435 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| Sark International Airways | JIM | 0 |
| SaxonAir | SXN | 12 |
| ScotAirways | SAY | 0 |
| Scottish Airways Flyers | SKO | 0 |
| Search and Rescue 202 | SRG | 0 |
| Search and Rescue 22 | SRD | 12 |
| Semitool Europe | STE | 0 |
| Servicios Aéreos Del Sol, S.A. de C.V. | AOS | 6 |
| Servisair | SGH | 0 |
| Shawbury Flying Training Unit | SYS | 0 |