- Cincinnati Municipal Airport Lunken FieldIdent: KLUKServes: Cincinnati
- Clear AirportIdent: PACLServes: Clear
- Clovis Municipal AirportIdent: KCVNServes: Clovis
- Coastal Carolina Regional AirportIdent: KEWNServes: New Bern
- Cobb County International Airport-McCollum FieldIdent: KRYYServes: Atlanta
- Coeur D'Alene Airport - Pappy Boyington FieldIdent: KCOEServes: Coeur d'Alene
- Cold Bay AirportIdent: PACDServes: Cold Bay
- Coleman A. Young Municipal AirportIdent: KDETServes: Detroit
- Columbia Gorge Regional AirportIdent: KDLSServes: Dallesport / The Dalles
- Columbia Metropolitan AirportIdent: KCAEServes: Columbia
- Columbia Regional AirportIdent: KCOUServes: Columbia
- Columbus Air Force BaseIdent: KCBMServes: Columbus
- Columbus AirportIdent: KCSGServes: Columbus
- Columbus Municipal AirportIdent: KBAKServes: Columbus
- Columbus Municipal AirportIdent: KOLUServes: Columbus
- Concord Municipal AirportIdent: KCONServes: Concord
- Concord-Padgett Regional AirportIdent: KJQFServes: Concord
- Conroe-North Houston Regional AirportIdent: KCXOServes: Houston
- Corpus Christi International AirportIdent: KCRPServes: Corpus Christi
- Cortez Municipal AirportIdent: KCEZServes: Cortez
- Corvallis Municipal AirportIdent: KCVOServes: Corvallis
- Cox FieldIdent: KPRXServes: Paris
- Crater Lake-Klamath Regional AirportIdent: KLMTServes: Klamath Falls
- Crossville Memorial Airport Whitson FieldIdent: KCSVServes: Crossville
- Curtis FieldIdent: KBBDServes: Brady
- Cut Bank International AirportIdent: KCTBServes: Cut Bank
- Cuyahoga County AirportIdent: KCGFServes: Cleveland
- Dalhart Municipal AirportIdent: KDHTServes: Dalhart
- Danbury Municipal AirportIdent: KDXRServes: Danbury
- Dane County Regional Truax FieldIdent: KMSNServes: Madison
- Daniel FieldIdent: KDNLServes: Augusta
- Danville Regional AirportIdent: KDANServes: Danville
- Davis Monthan Air Force BaseIdent: KDMAServes: Tucson
- Davison Army Air FieldIdent: KDAAServes: Fort Belvoir
- Dawson Community AirportIdent: KGDVServes: Glendive
- Daytona Beach International AirportIdent: KDABServes: Daytona Beach
- Deadhorse AirportIdent: PASCServes: Deadhorse
- Decatur AirportIdent: KDECServes: Decatur
- Deering AirportIdent: PADEServes: Deering
- DeKalb Peachtree AirportIdent: KPDKServes: Atlanta
- Del Rio International AirportIdent: KDRTServes: Del Rio
- Delaware County Johnson FieldIdent: KMIEServes: Muncie
- Delta County AirportIdent: KESCServes: Escanaba
- Deming Municipal AirportIdent: KDMNServes: Deming
- Derby FieldIdent: KLOLServes: Lovelock
- Desert Rock AirportIdent: KDRAServes: Mercury
- Destin Executive AirportIdent: KDTSServes: Destin
- Destin-Fort Walton Beach AirportIdent: KVPSServes: Valparaiso
- Devils Lake Regional AirportIdent: KDVLServes: Devils Lake
- Dickinson Theodore Roosevelt Regional AirportIdent: KDIKServes: Dickinson
- Dillant Hopkins AirportIdent: KEENServes: Keene
- Dillingham AirportIdent: PADLServes: Dillingham
- Dobbins Air Reserve BaseIdent: KMGEServes: Marietta
- Dodge City Regional AirportIdent: KDDCServes: Dodge City
- Dothan Regional AirportIdent: KDHNServes: Dothan
- Double Eagle II AirportIdent: KAEGServes: Albuquerque
- Dover Civil Air Terminal/Dover Air Force BaseIdent: KDOVServes: Dover
- Drake FieldIdent: KFYVServes: Fayetteville
- Draughon Miller Central Texas Regional AirportIdent: KTPLServes: Temple
- DuBois Regional AirportIdent: KDUJServes: Dubois