- Southwest Washington Regional AirportIdent: KKLSCountry: United States
- Southwest Wyoming Regional AirportIdent: KRKSCountry: United States
- Sovetskaya Gavan (Maygatka) AirportIdent: UHKMCountry: Russia
- Sovetskiy AirportIdent: USHSCountry: Russia
- Soyo AirportIdent: FNSOCountry: Angola
- Space Coast Regional AirportIdent: KTIXCountry: United States
- Space Florida Launch and Landing FacilityIdent: KTTSCountry: United States
- Spangdahlem Air BaseIdent: ETADCountry: Germany
- Sparrevohn LRRS AirportIdent: PASVCountry: United States
- Spichenkovo AirportIdent: UNWWCountry: Russia
- Spirit of St Louis AirportIdent: KSUSCountry: United States
- Spriggs Payne AirportIdent: GLMRCountry: Liberia
- Spring Point AirportIdent: MYAPCountry: Bahamas
- Springbok AirportIdent: FASBCountry: South Africa
- Springfield Branson National AirportIdent: KSGFCountry: United States
- Springfield-Beckley Municipal AirportIdent: KSGHCountry: United States
- Srednekolymsk AirportIdent: UESKCountry: Russia
- Sri Sathya Sai AirportIdent: VOPNCountry: India
- St Augustin AirportIdent: CYIFCountry: Canada
- St George AirportIdent: PAPBCountry: United States
- St George Regional AirportIdent: KSGUCountry: United States
- St Jean AirportIdent: CYJNCountry: Canada
- St Louis Regional AirportIdent: KALNCountry: United States
- St Paul Island AirportIdent: PASNCountry: United States
- St Simons Island AirportIdent: KSSICountry: United States
- St Thomas Municipal AirportIdent: CYQSCountry: Canada
- St. Anthony AirportIdent: CYAYCountry: Canada
- St. Jean AirportIdent: TFFJCountry: St. Barthélemy
- Staniel Cay AirportIdent: MYESCountry: Bahamas
- Staraya Russa Air BaseIdent: RU-10055Country: Russia
- Staroselye AirportIdent: UUBKCountry: Russia
- State College Regional AirportIdent: KUNVCountry: United States
- Stauning Vestjylland AirportIdent: EKVJCountry: Denmark
- Stavropol Shpakovskoye AirportIdent: URMTCountry: Russia
- Stawell AirportIdent: YSWLCountry: Australia
- Stella Maris AirportIdent: MYLSCountry: Bahamas
- Step Air BaseIdent: RU-7576Country: Russia
- Stevanus Rumbewas AirportIdent: WABOCountry: Indonesia
- Stewart AirportIdent: CZSTCountry: Canada
- Stillwater Regional AirportIdent: KSWOCountry: United States
- Stinson Municipal AirportIdent: KSSFCountry: United States
- Stockholm-Bromma AirportIdent: ESSBCountry: Sweden
- Stockton Metropolitan AirportIdent: KSCKCountry: United States
- Stokmarknes Airport, SkagenIdent: ENSKCountry: Norway
- Stony Rapids AirportIdent: CYSFCountry: Canada
- Stord Airport, SørstokkenIdent: ENSOCountry: Norway
- Stornoway AirportIdent: EGPOCountry: United Kingdom
- Storuman AirportIdent: ESUDCountry: Sweden
- Strezhevoy AirportIdent: UNSSCountry: Russia
- Sua Pan AirportIdent: FBSNCountry: Botswana
- Sub Teniente Nestor Arias AirportIdent: SVSPCountry: Venezuela
- Suboficial Ay Santiago Germano AirportIdent: SAMRCountry: Argentina
- Sudbury AirportIdent: CYSBCountry: Canada
- Sugar Land Regional AirportIdent: KSGRCountry: United States
- Sui AirportIdent: OPSUCountry: Pakistan
- Suixi Air BaseIdent: CN-0080Country: China
- Suizhong Air BaseIdent: CN-0209Country: China
- Sukhothai AirportIdent: VTPOCountry: Thailand
- Sultan Abdul Halim AirportIdent: WMKACountry: Malaysia
- Sultan Babullah AirportIdent: WAEECountry: Indonesia