| Abbreviation | Definition |
|---|---|
| CTE | Carti, Panama |
| CTG | Cartagena, Colombia |
| CTH | Coatesville, Pennsylvania |
| CTK | Canton, South Dakota USA |
| CTL | Charleville, Queensland, Australia |
| CTP | Carutapera, Ma, Brazil |
| CTQ | Santa Vitoria, Minas Gerais, Brazil |
| CTS | New Chitose Airport, Chitose, Sapporo, Hokkaido, Japan |
| CTS | New Chitose Airport, Hokkaido, Japan |
| CTU | Chengdu, Mainland China |
| CTW | Cottonwood Airport, Cottonwood, Arizona USA |
| CTY | Cross City, Florida USA |
| CUAP | Active Pass Airport, Active Pass, British Columbia, Canada |
| CUC | Cucuta, Colombia |
| CUD | Caloundra, Queensland, Australia |
| CUE | Cuenca, Ecuador |
| CUF | Cuneo, Italy |
| CUG | Cudal Orange, New South Wales, Australia |
| CUH | Cushing, Oklahoma USA |
| CUHA | Quaqtaq Airport, Quaqtaq, Quebec, Canada |