Showing 1,012 registered airlines with a combined fleet of 9,649 airframes.
| Airline Name | ICAO / IATA | Fleet Size |
|---|---|---|
| Colemill Enterprises | CLE | 0 |
| Colgan Air | CJC / 9L | 0 |
| Colt International | CCX | 0 |
| Columbia Helicopters | WCO | 2 |
| Columbus Air Transport | KLR | 0 |
| Colvin Aviation | GHP | 0 |
| Comair | COM / OH | 0 |
| Commonwealth Jet Service | CJS | 0 |
| CommuteAir | UCA / C5 | 33 |
| Compass Airlines | CPZ / CP | 12 |