- Cunningham AirportIdent: 2WN6Serves: Granton
- Cunningham FieldIdent: US-6857Serves: Natchez
- Curanda AirportIdent: LL39Serves: Morris
- Curless AirportIdent: IS08Serves: Astoria
- Curns AirportIdent: 2WN3Serves: New London
- Currant Ranch AirportIdent: K9U7Serves: Currant
- Currituck County Regional AirportIdent: KONXServes: Maple
- Curry AirportIdent: SC16Serves: Hartsville
- Curt's Place AirportIdent: 6MI3Serves: Zeeland
- Curtis AirportIdent: 0WA2Serves: Chehalis
- Curtis AirportIdent: 7OH8Serves: Chardon
- Curtis AirportIdent: NY62Serves: Verona
- Curtis and Curtis AirportIdent: 65NMServes: Melrose
- Curtis FieldIdent: 8MO3Serves: Richmond
- Curtis L Brown Jr FieldIdent: KEYFServes: Elizabethtown
- Curtis Municipal AirportIdent: K47VServes: Curtis
- Cushing Field Ltd AirportIdent: 0C8Serves: Newark
- Cushing Municipal AirportIdent: KCUHServes: Cushing
- Custer AirportIdent: KTTFServes: Monroe
- Custer County AirportIdent: KCUTServes: Custer
- Custer State Park AirportIdent: K3V0Serves: Crazy Horse
- Cutty FieldIdent: WT15Serves: Bellingham
- Cuyler FieldIdent: FD27Serves: Glen St Mary
- Cwian FieldIdent: 2LL1Serves: Sheridan
- CX Ranch Number 1 AirportIdent: ID01Serves: Clark Fork
- CX Ranch Number 2 AirportIdent: ID78Serves: Clark Fork
- Cynthiana-Harrison County AirportIdent: K0I8Serves: Cynthiana
- Cypress Creek AirparkIdent: 6AR0Serves: Vilonia
- Cypress Creek AirportIdent: 3AR3Serves: Cabot
- Cypress Lakes AirportIdent: GA35Serves: Bloomingdale
- Cypress River AirportIdent: K24FServes: Jefferson
- D An P Farm AirportIdent: 12TTServes: Gainesville
- D and B AirparkIdent: 84WAServes: Elma
- D Bar C AirportIdent: 28IDServes: Dixie
- D Bar D AirportIdent: 9CO6Serves: Elizabeth
- D J AirportIdent: MI44Serves: Mount Pleasant
- D M Stevenson Ranch AirportIdent: OR30Serves: Bend
- D'Amico AirportIdent: NY13Serves: Lyons
- D'Angelo AirportIdent: 6MD7Serves: Golts
- D.Evans Farm AirportIdent: PA73Serves: East Prospect
- Dacy AirportIdent: K0C0Serves: Harvard
- Dade Collier Training and Transition AirportIdent: KTNTServes: Miami
- Daghita AirportIdent: NR13Serves: Norlina
- Dague StripIdent: II12Serves: Grass Creek
- Dahio Trotwood AirportIdent: I44Serves: Dayton
- Dahl Creek AirportIdent: DCKServes: Dahl Creek
- Dahl Private AirportIdent: ND90Serves: Cogswell/Brampton/
- Dahler Homestead AirportIdent: 7AK5Serves: Soldotna
- Dahlgren Naval Surface Warfare Center AirportIdent: KNDYServes: Dahlgren
- Dahnke AirportIdent: 51INServes: West Lafayette
- Dairyview AirportIdent: 07MNServes: Hadley
- Dakota Air Ranch AirportIdent: 09NRServes: Ramseur
- Dakota AirportIdent: NA60Serves: Grandin
- Dale Curten Farm AirportIdent: 37LLServes: Modoc
- Dale Delight AirportIdent: Y16Serves: Postville
- Dale Landing StripIdent: MS45Serves: Vicksburg
- Dale O. Galer AerodromeIdent: 2AL6Serves: Irvington
- Dallas Executive AirportIdent: KRBDServes: Dallas
- Dallas South Port AirportIdent: T13Serves: Palmer
- Dalonia AirportIdent: 32WIServes: Hortonville