- Sportsman AirparkIdent: 2S6Serves: Newberg
- Sportsman's World AirportIdent: TA65Serves: Palo Pinto
- Spotts FieldIdent: 05IAServes: Nora Springs
- Sprague AirportIdent: CD20Serves: Loveland
- Spratling FieldIdent: AL25Serves: Roba
- Spring AirportIdent: 86LAServes: Kentwood
- Spring Brook AirportIdent: 0NK1Serves: Central Square
- Spring Brook AirportIdent: 1LL2Serves: Seneca
- Spring Canyon AirportIdent: US-7518Serves: Walsenburg
- Spring Creek AirparkIdent: 5KY7Serves: Albany
- Spring Creek AirportIdent: 80WIServes: Spring Lake
- Spring Creek Ranch AirportIdent: US-0576Serves: Tishomingo
- Spring Creek Ranch AirportIdent: WA66Serves: White Salmon
- Spring Creek Ranch East AirportIdent: 01OLServes: Tishomingo
- Spring Hill AirportIdent: 70NServes: Sterling
- Spring Hill AirportIdent: MD35Serves: Salisbury
- Spring Lake AirportIdent: 2NE4Serves: Gordon
- Spring Lake AirportIdent: IN43Serves: Pekin
- Spring Paths AirportIdent: 42NCServes: Spring Hope
- Spring Ranch AirportIdent: 3TA6Serves: Brackettville
- Spring Ranch AirportIdent: 48XAServes: Cisco
- Spring Valley Farm AirportIdent: 1WI0Serves: Orfordville
- Spring Valley Farm AirportIdent: 6GA4Serves: Loganville
- Springbrook AirportIdent: 4OR0Serves: Rogue River
- Springbrook AirportIdent: 5WI1Serves: Springbrook
- Springdale Municipal AirportIdent: KASGServes: Springdale
- Springer Municipal AirportIdent: KS42Serves: Springer
- Springerville Municipal AirportIdent: KD68Serves: Springerville
- Springfield Municipal AirportIdent: K8V7Serves: Springfield
- Springfield Municipal AirportIdent: KD42Serves: Springfield
- Springfield Municipal AirportIdent: KY03Serves: Springfield
- Springfield Robertson County AirportIdent: KM91Serves: Springfield
- Springhill AirportIdent: 77MOServes: Mount Vernon
- Springhill AirportIdent: KSPHServes: Springhill
- Springstead AirportIdent: WS06Serves: Park Falls
- Springwood AirstripIdent: 08VAServes: Buchanan
- Spruce AirportIdent: CT43Serves: Jewett City
- Spruce Creek AirportIdent: 7FL6Serves: Daytona Beach
- Spruce Point Tree Farm LLC AirportIdent: 5CO1Serves: Austin
- Spud View AirportIdent: 18PNServes: Upper Strasburg
- Square Air AirportIdent: TS63Serves: McKinney
- Squaw Rock AirstripIdent: US-1062Serves: Philipsburg
- Squier Landing AirportIdent: 0MD2Serves: Newburg
- Squillacote AirportIdent: 2FA1Serves: Ormond Beach
- Squires Aviation Ranch AirportIdent: FD63Serves: Jasper
- Squirrel Creek Ranch AirportIdent: 4TE9Serves: D'Hanis
- Srigley Field AirstripIdent: 75TNServes: Tusculum
- St Bernard FieldIdent: 94NYServes: Union Springs
- St Charles AirportIdent: LS40Serves: Ama
- St Charles County Regional Airport/Smartt FieldIdent: KSETServes: St Charles
- St Clair County AirportIdent: KPLRServes: Pell City
- St Clair County International AirportIdent: KPHNServes: Port Huron
- St Croix Riviera AirportIdent: 6WI2Serves: River Falls
- St Croix Valley AirportIdent: WN86Serves: Osceola
- St Elmo AirportIdent: K2R5Serves: St Elmo
- St George Island AirportIdent: KF47Serves: Apalachicola
- St Helen AirportIdent: 6Y6Serves: St Helen
- St Ignatius AirportIdent: 52SServes: St Ignatius
- St James Municipal AirportIdent: KJYGServes: St James
- St John AirportIdent: 4MD9Serves: Owings Mills