| Cape Coral, Florida (RSW) |
Columbia Jeff City, Missouri (COU) |
| Carlsbad, California (CLD) |
Columbus, Georgia (CSG) |
| Carlsbad, California (SAN) |
Columbus, Ohio (CMH) |
| Cedar Rapids, Iowa (CID) |
Corpus Christi, Texas (CRP) |
| Champaign, Illinois (CMI) |
| Charleston, South Carolina (CHS) |
| Charleston, West Virginia (CRW) |
| Charlotte, North Carolina (CLT) |
| Charlottesville, Virginia (CHO) |
| Chattanooga, Tennessee (CHA) |
| Cheyenne, Wyoming (CYS) |
| Chicago , Illinois (ORD) |
| Cincinnati, Ohio (CVG) |
| Clearwater, Florida (TPA) |
| Cleveland, Ohio (CLE) |
| College Station, Texas (CLL) |
| Colorado Springs, Colorado (COS) |
| Columbia, South Carolina (CAE) |