| Abbreviation | Definition |
|---|---|
| SSNP | Nova Prata, Brazil |
| SSO | Sao Lourenco, Minas Gerais, Brazil |
| SSQ | La Sarre, Quebec, Canada |
| SSR | Sara, Vanuatu |
| SSS | Siassi, Papua New Guinea |
| SSV | Siasi, Philippines |
| SSX | Samsun, Turkey |
| SSY | M'banza Congo, Angola |
| SSZ | Santos, Sao Paulo, Brazil |
| STB | Santa Barbara, Zulia, Venezuela |
| STC | St. Cloud Regional Airport, St. Cloud, Minnesota USA |
| STD | Santo Domingo, Venezuela |
| STF | Stephen Island, Queensland, Australia |
| STG | St. George Island, Alaska USA |
| STH | Baymont Milwaukee Airport, Oak Creek, Wisconsin USA |
| STI | Santiago Municipal Airport, Santiago, Dominican Republic |
| STJ | St Julians, Malta |
| STJ | St. Joseph, Missouri USA |
| STK | Sterling, Colorado USA |
| STL | Lambert - St. Louis International Airport, St. Louis, Missouri USA |