- Sumter AirportIdent: KSMSServes: Sumter
- Sun Hill Ranch AirportIdent: CA70Serves: Helendale
- Sun Valley AirportIdent: KA20Serves: Bullhead City
- Sun Valley Estates AirportIdent: UT28Serves: Lund
- Sun View Field AirportIdent: 03PRServes: Bonner Springs
- Sunbelt StripIdent: 09GAServes: Moultrie
- Sunburst FieldIdent: US-1010Serves: Lancaster
- Sunburst Ranch AirportIdent: MU48Serves: Gainesville
- Sunbury AirportIdent: K71NServes: Sunbury
- Sundance AirparkIdent: KHSDServes: Oklahoma City
- Sundance Farms AirportIdent: FD20Serves: La Belle
- Sundance Meadows AirportIdent: OG05Serves: Bend
- Sundance Ranch AirportIdent: US-7495Serves: Alta
- Sunday Creek AirparkIdent: MT29Serves: Miles City
- Sunderland AirportIdent: 0MU1Serves: Avilla
- Sundog AirportIdent: 99UTServes: Jensen
- Sunflower Ranch AirportIdent: 80ALServes: Tyler
- Sunniland Ranch AirportIdent: 08FDServes: Okeechobee
- Sunny Hill AirportIdent: ME60Serves: Belgrade
- Sunny Rest AirportIdent: 8PA8Serves: Palmerton
- Sunny Ridge LandingIdent: US-7558Serves: Crittenden
- Sunny V Ranch AirportIdent: US-0515Serves: Sisterdale
- Sunnyhill AirportIdent: 1OR0Serves: North Bend
- Sunnyside / Kirch Wildlife Management Area AirportIdent: NV07Serves: Lund
- Sunnyside Municipal AirportIdent: K1S5Serves: Sunnyside
- Sunnyvale FieldIdent: CT21Serves: North Stonington
- Sunrise Acres AirportIdent: 71KYServes: Petersburg
- Sunrise Beach AirportIdent: 2KLServes: Sunrise Beach Village
- Sunrise Dusters AirportIdent: CA18Serves: Robbins
- Sunrise Farms AirportIdent: ME25Serves: Sinclair
- Sunrise Skypark AirportIdent: ID40Serves: Marsing
- Sunriver AirportIdent: KS21Serves: Sunriver
- Sunset Acres AirportIdent: LL24Serves: Saint George
- Sunset Air StripIdent: 1OR3Serves: North Plains
- Sunset AirportIdent: 15WAServes: Stanwood
- Sunset AirportIdent: TA18Serves: Forney
- Sunset Ranch AirportIdent: US-9231Serves: Mico
- Sunset StripIdent: 0GA6Serves: Jersey
- Sunset StripIdent: 33OHServes: Jerome
- Sunset StripIdent: 37NDServes: Dunn Center
- Sunset StripIdent: 7GE5Serves: Centralhatchee
- Sunset StripIdent: AK16Serves: Wasilla
- Sunset StripIdent: OH07Serves: Marlboro
- Sunset Strip AirparkIdent: 32FAServes: Okeechobee
- Sunset Strip AirparkIdent: 90KSServes: Topeka
- Sunside AirportIdent: 74NKServes: Cairo
- Suntime AirportIdent: 8NK6Serves: West Burlington
- Superior Aero Estates AirportIdent: 43MNServes: Saginaw
- Superior Municipal AirportIdent: E81Serves: Superior
- Superior Municipal AirportIdent: K12KServes: Superior
- Supplejack AirportIdent: MS36Serves: Canton
- Surfside AirportIdent: MN24Serves: Circle Pines
- Susanville Municipal AirportIdent: KSVEServes: Susanville
- Sussex AirportIdent: KFWNServes: Sussex
- Sutter County AirportIdent: KO52Serves: Yuba City
- Sutton AirportIdent: IN00Serves: Montmorenci
- Sutton AirportIdent: NE35Serves: Chester
- Sutton on Rogue AirportIdent: 0OR8Serves: White City
- Sutton's FieldIdent: 0II8Serves: Lowell
- Suwanee Valley AirportIdent: FA89Serves: White Springs,