- Carey FieldIdent: 4MD3Serves: Bishopville
- Carl Ensor AirportIdent: 61MOServes: Grainville
- Carl Folsom AirportIdent: K14JServes: Elba
- Carl's AirportIdent: MI70Serves: Clinton
- Carl's Landing AirportIdent: AK19Serves: Talkeetna
- Carlin Bay AirportIdent: ID43Serves: Coeur D'Alene
- Carlisle AirportIdent: 7TE5Serves: Mullin
- Carlisle AirportIdent: KN94Serves: Carlisle
- Carlisle Municipal AirportIdent: K4M3Serves: Carlisle
- Carls AirportIdent: 78MIServes: South Rockwood
- Carlson Agricultural AirportIdent: 1MY1Serves: Wendell
- Carlson AirportIdent: 4WI5Serves: Eau Claire
- Carlson AirportIdent: 9WI9Serves: Superior
- Carlson Restricted Landing AreaIdent: IS19Serves: Pecatonica
- Carmi Municipal AirportIdent: KCULServes: Carmi
- Carnegie Municipal AirportIdent: K86FServes: Carnegie
- Carnot FieldIdent: 3WI0Serves: Algoma
- Carp Farms AirportIdent: 6MU5Serves: Norborne
- Carpenter AirportIdent: 0GE7Serves: Appling
- Carpentiers StripIdent: 64AKServes: Point Mackenzie
- Carr AirportIdent: 6WA6Serves: Pasco
- Carr AirportIdent: 72KYServes: Williamsburg
- Carr AirportIdent: WV65Serves: Fairmont
- Carr Creek AirportIdent: US-0842Serves: Ellington
- Carrabelle Thompson AirportIdent: KX13Serves: Carrabelle
- Carranza Farm AirstripIdent: 5AZ7Serves: Stanfield
- Carrar Farm AirportIdent: US-0499Serves: Montrose
- Carriers Skypark AirportIdent: VT31Serves: Washington
- Carrington Municipal AirportIdent: K46DServes: Carrington
- Carrizozo Municipal AirportIdent: KF37Serves: Carrizozo
- Carroll County AirportIdent: K4M1Serves: Berryville
- Carroll County AirportIdent: KHZDServes: Huntingdon
- Carroll County Regional Jack B Poage FieldIdent: KDMWServes: Westminster
- Carroll County-Tolson AirportIdent: KTSOServes: Carrollton
- Carroll's AirparkIdent: IN56Serves: Muncie
- Carroll's AirportIdent: OI22Serves: Elyria
- Carrollton Memorial AirportIdent: K26Serves: Carrollton
- Carson FieldIdent: MT53Serves: Kalispell
- Carsonville AirportIdent: 0PS3Serves: Carsonville
- Carter AirportIdent: 92CServes: Pulaski
- Carter Flight Park UltralightportIdent: NY67Serves: Manlius
- Carter Ranch AirportIdent: 89TSServes: Oakwood
- Carter Ranch AirportIdent: 8TE7Serves: Fredericksburg
- Carter-Norman AirportIdent: TA87Serves: Boyd
- Cartersville AirportIdent: 05KYServes: Paint Lick
- Cartersville AirportIdent: KVPCServes: Cartersville
- Cartwheel AirportIdent: 0CO8Serves: Mead
- Carty's AirstripIdent: 8AK2Serves: Nikiski
- Caruthersville Memorial AirportIdent: KM05Serves: Caruthersville
- Casa De Aero Park AirportIdent: 68ISServes: Hampshire
- Casa Grande Municipal AirportIdent: KCGZServes: Casa Grande
- Casad Industrial Park AirportIdent: 56INServes: New Haven
- Casas Adobes AirparkIdent: NM69Serves: Mimbres
- Cascade AirportIdent: KU70Serves: Cascade
- Cascade Locks State AirportIdent: KCZKServes: Cascade Locks
- Casco Cove Coast Guard StationIdent: PAATServes: Attu
- Casey FieldIdent: TE06Serves: Leonard
- Casey Municipal AirportIdent: K1H8Serves: Casey
- Cash Creek AirportIdent: PN10Serves: Ulster
- Cashmere-Dryden AirportIdent: 8S2Serves: Cashmere