- Coulee City AirportIdent: WA15Serves: Coulee City
- Coulter FieldIdent: KCFDServes: Bryan
- Council AirportIdent: K29Serves: Council
- Council Bluffs Municipal AirportIdent: KCBFServes: Council Bluffs
- Council Grove Municipal AirportIdent: K63Serves: Council Grove
- Country Air Estates AirportIdent: 1AR9Serves: Lonoke
- Country Bend AirportIdent: LS39Serves: Watson
- Country Breeze AirportIdent: 01LSServes: Slaughter
- Country Club Air ParkIdent: NH88Serves: Goffstown
- Country Club AirportIdent: MS15Serves: Greenville
- Country Haven AirportIdent: MY94Serves: Cloquet
- Country Landings AirportIdent: 86FDServes: Bell
- Country Squire AirparkIdent: KS48Serves: Sandy
- Countryman's Landing StripIdent: NK01Serves: Carthage
- Countryside AirportIdent: US-12705Serves: Jennings
- County Memorial AirportIdent: KEIWServes: New Madrid
- Coupeville AirparkIdent: WN40Serves: Coupeville
- Coupeville Nolf AirportIdent: KNRAServes: Coupeville
- Courtland AirportIdent: K9A4Serves: Courtland
- Courtney Plummer AirportIdent: 9WN1Serves: Winneconne
- Courtney's Landing AirportIdent: 99IAServes: Eddyville
- Couvillion AirportIdent: 22LSServes: Arnaudville
- Cove Side Ranch Port AirportIdent: OG07Serves: Cove
- Cove Valley AirportIdent: 6G6Serves: Williamsburg
- Covered Bridge Fields AirportIdent: 1WN2Serves: Cedarburg
- Covered S Ranch AirportIdent: US-4441Serves: Snyder
- Covey Trails AirportIdent: X09Serves: Fulshear
- Covington AirportIdent: VA72Serves: Martinsville
- Covington Municipal AirportIdent: K9A1Serves: Covington
- Covington Municipal AirportIdent: KM04Serves: Covington
- Covington-Vincent AirportIdent: LA87Serves: Covington
- Cow Pasture AirportIdent: TE16Serves: Parker
- Cowboys Air Ranch AirportIdent: 84MEServes: Brookton
- Cowley FieldIdent: 96GServes: Sandusky
- Cowtown AirportIdent: 98SCServes: Govan
- Cox AirportIdent: NC81Serves: Apex
- Cox Farm AirportIdent: TN71Serves: Lenoir City
- Cox FieldIdent: 81NCServes: Tabor City
- Cox FieldIdent: US-7849Serves: Flovilla
- Cox-Coyour Memorial FieldIdent: 59MNServes: Roosevelt
- Cox-Grantham AirfieldIdent: 6NC0Serves: Grantham
- Coxs Well AirportIdent: U48Serves: Atomic City
- Coye FieldIdent: 30NYServes: Canadice
- Coyle FieldIdent: NJ20Serves: Chatsworth
- Coyote Creek AirportIdent: 7KSServes: Fuley
- Coyote Creek Ranch AirportIdent: 30COServes: Guffey
- Coyote Crossing AirportIdent: TA26Serves: Maypearl
- Coyote FieldIdent: 4XS1Serves: Corsicana
- Coyote Ridge AirportIdent: 17IDServes: Midvale
- Coyote Run AirportIdent: 0ID3Serves: Mountain Home
- Coyote Run AirportIdent: US-1124Serves: Lamont
- Cozad Municipal AirportIdent: KCZDServes: Cozad
- CPTPA Headquarters AirportIdent: ID84Serves: Orofino
- Crabbe AirportIdent: 3NR4Serves: Elizabeth City
- Craddock FieldIdent: 6MU9Serves: Licking
- Craig Craft AirportIdent: 86NCServes: Hertford
- Craig FieldIdent: KSEMServes: Selma
- Craig Moffat AirportIdent: KCAGServes: Craig
- Craig Private AirportIdent: 5ND3Serves: Bathgate
- Craigmont Municipal AirportIdent: S89Serves: Craigmont