- Saginaw County H.W. Browne AirportIdent: KHYXServes: Saginaw
- Saguache Municipal AirportIdent: 04VServes: Saguache
- Sagulla AirportIdent: PN31Serves: Grove City
- Sahoma Lake AirportIdent: 03OKServes: Sapulpa
- Saint Labre Mission AirportIdent: K3U4Serves: Ashland
- Sainte Genevieve Flying Club AirportIdent: 6MO2Serves: Sainte Genevieve
- Salado Bluffs AirportIdent: TT61Serves: Salado
- Salaika Aviation AirportIdent: 07TAServes: Danbury
- Salem AirfieldIdent: NJ74Serves: Salem
- Salem Airpark Inc AirportIdent: K38DServes: Salem
- Salem Memorial AirportIdent: KK33Serves: Salem
- Salem Municipal AirportIdent: I83Serves: Salem
- Salem–Leckrone AirportIdent: KSLOServes: Salem
- Salida Airport - Harriet Alexander FieldIdent: KANKServes: Salida
- Salina Gunnison AirportIdent: K44UServes: Salina
- Sallisaw Municipal AirportIdent: KJSVServes: Sallisaw
- Sally Wofford AirportIdent: 8M2Serves: Weiner
- Salmon Bar AirportIdent: US-7482Serves: Imnaha
- Salmon Lake AirportIdent: Z81Serves: Salmon Lake
- Salsbery AirportIdent: II70Serves: Sharpsville
- Salton Sea AirportIdent: KSASServes: Salton City
- Salty Approach AirportIdent: FL90Serves: North Captiva
- Salubrious Point AirportIdent: 5NK0Serves: Chaumont
- Saluda County AirportIdent: K6J4Serves: Saluda
- Sam's FieldIdent: 6PN5Serves: Bradford
- Samoa Field AirportIdent: O33Serves: Eureka
- Sampley's AirportIdent: 28AZServes: Aguila
- Sampson County AirportIdent: KCTZServes: Clinton
- Samuel L. Clemens Memorial AirportIdent: MU00Serves: Paris
- Samuels FieldIdent: KBRYServes: Bardstown
- Samuels Springs AirportIdent: 59KYServes: Deatsville
- San Ardo FieldIdent: CA88Serves: San Ardo
- San Augustine County AirportIdent: K78RServes: San Augustine
- San Christoval Ranch AirportIdent: XS71Serves: Pawnee
- San Clemente Island Naval Auxiliary Landing FieldIdent: KNUCServes: San Clemente Island
- San Gabriel Valley AirportIdent: KEMTServes: El Monte
- San Geronimo AirparkIdent: K8T8Serves: San Antonio
- San Joaquin AirportIdent: CA32Serves: San Joaquin
- San Jose Island AirportIdent: XS67Serves: Rockport
- San Manuel AirportIdent: KE77Serves: San Manuel
- San Martin AirportIdent: KE16Serves: San Martin
- San Miguel Ranch AirportIdent: NM53Serves: Las Vegas
- San Nicolas Island Nolf AirportIdent: KNSIServes: San Nicolas Island
- San Pedro Ranch AirportIdent: 97TXServes: Carrizo Springs
- San Rafael AirportIdent: CA35Serves: San Rafael
- San Rafael Ranch AirportIdent: 38XSServes: Santa Elena
- San Saba County Municipal AirportIdent: K81RServes: San Saba
- Sanborn AirportIdent: 38CNServes: Meridian
- Sanca Farm SkyportIdent: US-12960Serves: Robertsdale
- Sanctuary AirportIdent: MO86Serves: Bellflower
- Sand Cove Ranch AirportIdent: US-8503Serves: Veyo
- Sand Creek Wildlife Station AirportIdent: MT79Serves: Roy
- Sand Field AirportIdent: IA69Serves: Marcus
- Sand Ridge Airpark Inc AirportIdent: OK94Serves: Collinsville
- Sand Springs StripIdent: 8U1Serves: Sand Springs
- Sandbur Ranches Private AirportIdent: TX75Serves: Franklin
- Sanden AirportIdent: 4ND8Serves: Wyndmere
- Sanders AirportIdent: 85KSServes: Winchester
- Sanders AirportIdent: MT37Serves: Kalispell
- Sanders Gyroport AirportIdent: IN88Serves: Cloverdale