| CZC | - | Copper Centre Airport | Copper Centre | |
| CRO | KCRO | Corcoran Airport | Corcoran | |
| - | - | Cordell Municipal | Cordell | |
| CKU | - | Cordova Municipal Airport | Cordova | |
| - | - | Cornelia Fort Airpark | Nashville | |
| - | - | Cornelius-Moore | Cedartown | |
| - | - | Cornell Municipal | Cornell | |
| CBA | - | Corner Bay Airport | Corner Bay | |
| - | - | Corning Municipal | Corning | |
| - | - | Corning Municipal | Corning | |
| - | KCRZ | Corning Municipal | Corning | |
| - | - | Corning-Painted Post | Corning | |
| - | KAJO | Corona Municipal | Corona | |
| - | - | Coronado | Albuquerque | |
| - | - | Corporate | Pelion | |
| - | - | Corry-Lawrence | Corry | |
| - | - | Corsica Municipal | Corsica | |
| - | - | Corydon | Corydon | |
| - | - | Costin | Port St Joe | |
| - | - | Cottage Grove State | Cottage Grove | |
| - | - | Cottonwood | Rockford | |
| - | - | Cottonwood Municipal | Cottonwood | |
| COT | KCOT | Cotulla Airport | Cotulla | |
| CFD | KCFD | Coulter Field | Bryan | |
| CBF | KCBF | Council Bluffs Municipal Airport | Council Bluffs | |
| - | - | Council Municipal | Council | |
| - | - | Country Club | Goffstown | |
| - | - | Country Squire | Sandy | |
| WSG | KAFJ | County Airport | Washington | |
| - | KEIW | County Memorial | New Madrid | |
| - | - | Cove Valley | Williamsburg | |
| - | - | Covington Municipal | Covington | |
| - | - | Covington Municipal | Covington | |
| - | - | Cowgill | Rio | |
| - | - | Cowley | Sandusky | |
| PRX | KPRX | Cox Field | Paris | |
| - | - | Cox'S Well | Atomic City | |
| - | KCZD | Cozad Municipal | Cozad | |
| - | - | Craft Air | Farmville | |
| - | - | Craig Co South Grand Lake | Ketchum | |
| SEM | KSEM | Craig Field | Selma | |
| CIG | KCAG | Craig-Moffat Airport | Craig | |
| - | - | Craigmont Municipal | Craigmont | |
| - | - | Crandon Municipal | Crandon | |
| CCG | - | Crane County Airport | Crane | |
| CKR | - | Crane Island Airport | Crane Island | |
| - | - | Cranland | Hanson | |
| - | - | Crawford | Crawford | |
| - | KCFJ | Crawfordsville Municipal Airport | Crawfordsville | |
| - | - | Crazy Horse Municipal | Davis | |