- Branson AirportIdent: KBBGServes: Branson
- Bremerton National AirportIdent: KPWTServes: Bremerton
- Brown Field Municipal AirportIdent: KSDMServes: San Diego
- Brownsville South Padre Island International AirportIdent: KBROServes: Brownsville
- Brunswick Executive AirportIdent: KBXMServes: Brunswick
- Brunswick Golden Isles AirportIdent: KBQKServes: Brunswick
- Bryce Canyon AirportIdent: KBCEServes: Bryce Canyon
- Buchanan FieldIdent: KCCRServes: Concord
- Buckley Space Force BaseIdent: KBKFServes: Aurora
- Burke Lakefront AirportIdent: KBKLServes: Cleveland
- Burley Municipal AirportIdent: KBYIServes: Burley
- Burns Municipal AirportIdent: KBNOServes: Burns
- Butts AAF (Fort Carson) Air FieldIdent: KFCSServes: Fort Carson
- Cairns AAF (Fort Rucker) Air FieldIdent: KOZRServes: Fort Rucker/Ozark
- California City Municipal AirportIdent: KL71Serves: California City
- California Redwood Coast-Humboldt County AirportIdent: KACVServes: Arcata/Eureka
- Camarillo AirportIdent: KCMAServes: Camarillo
- Camp Pendleton MCAS (Munn Field) AirportIdent: KNFGServes: Oceanside
- Campbell Army Airfield (Fort Campbell)Ident: KHOPServes: Fort Campbell
- Cannon Air Force BaseIdent: KCVSServes: Clovis
- Canyonlands Regional AirportIdent: KCNYServes: Moab
- Cape Canaveral SFS Skid StripIdent: KXMRServes: Cocoa Beach
- Cape Cod Gateway AirportIdent: KHYAServes: Hyannis
- Cape Girardeau Regional AirportIdent: KCGIServes: Cape Girardeau
- Cape Lisburne LRRS AirportIdent: PALUServes: Cape Lisburne
- Cape May County AirportIdent: KWWDServes: Wildwood
- Cape Newenham LRRS AirportIdent: PAEHServes: Cape Newenham
- Cape Romanzof LRRS AirportIdent: PACZServes: Cape Romanzof
- Capital Region International AirportIdent: KLANServes: Lansing
- Caribou Municipal AirportIdent: KCARServes: Caribou
- Carson AirportIdent: KCXPServes: Carson City
- Casper-Natrona County International AirportIdent: KCPRServes: Casper
- Castle AirportIdent: KMERServes: Merced
- Cavern City Air TerminalIdent: KCNMServes: Carlsbad
- Cecil AirportIdent: KVQQServes: Jacksonville
- Cedar City Regional AirportIdent: KCDCServes: Cedar City
- Centennial AirportIdent: KAPAServes: Denver
- Central Illinois Regional Airport at Bloomington-NormalIdent: KBMIServes: Bloomington/Normal
- Central Kentucky Regional AirportIdent: KI39Serves: Richmond
- Central Nebraska Regional AirportIdent: KGRIServes: Grand Island
- Central Wisconsin AirportIdent: KCWAServes: Mosinee
- Central Wyoming Regional AirportIdent: KRIWServes: Riverton
- Chadron Municipal AirportIdent: KCDRServes: Chadron
- Chan Gurney Municipal AirportIdent: KYKNServes: Yankton
- Chandler FieldIdent: KAXNServes: Alexandria
- Chanute Martin Johnson AirportIdent: KCNUServes: Chanute
- Charles B. Wheeler Downtown AirportIdent: KMKCServes: Kansas City
- Charles M. Schulz Sonoma County AirportIdent: KSTSServes: Santa Rosa
- Charlottesville Albemarle AirportIdent: KCHOServes: Charlottesville
- Chattanooga Metropolitan Airport (Lovell Field)Ident: KCHAServes: Chattanooga
- Chautauqua County-Jamestown AirportIdent: KJHWServes: Jamestown
- Cherry Capital AirportIdent: KTVCServes: Traverse City
- Cherry Point MCAS / Cunningham Field/Ident: KNKTServes: Cherry Point
- Cheyenne Regional Jerry Olson FieldIdent: KCYSServes: Cheyenne
- Chicago Executive AirportIdent: KPWKServes: Chicago/Prospect Heights/Wheeling
- Chicago Rockford International AirportIdent: KRFDServes: Chicago/Rockford
- Childress Municipal AirportIdent: KCDSServes: Childress
- China Lake Naws (Armitage Field) AirportIdent: KNIDServes: China Lake
- Chippewa County International AirportIdent: KCIUServes: Kincheloe
- Chippewa Valley Regional AirportIdent: KEAUServes: Eau Claire