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- Cape Lisburne (LUR)
- Cape Newenham (EHM)
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- Carlsbad (CNM)
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- Chanute (CNU)
- Charles City (CCY)
- Chicago/Prospect Heights/Wheeling (PWK)
- Chicago/West Chicago (DPA)
- Chicopee (CEF)
- Childress (CDS)
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- Cleveland (BKL)
- Cleveland (CGF)
- Clovis (CVS)
- Cocoa Beach (COF)
- Coeur d'Alene (COE)
- Columbia (CUB)
- Columbus (CBM)
- Columbus (CLU)
- Columbus (OLU)
- Columbus (OSU)
- Concord (CCR)
- Concord (CON)
- Corpus Christi (NGP)
- Corvallis (CVO)
- Crestview (CEW)
- Crestview (EGI)
- Crossville (CSV)
- Cut Bank (CTB)
- Daggett (DAG)
- Dalhart (DHT)
- Dallesport / The Dalles (DLS)
- Danbury (DXR)
- Danville (DAN)
- Dayton (FFO)
- DeRidder (DRI)
- Deering (DRG)
- Del Rio (DLF)
- Del Rio (DRT)
- Delta Junction Ft Greely (BIG)
- Deming (DMN)
- Denison (PNX)
- Denver (APA)
- Denver (BJC)
- Destin (DSI)
- Detroit (DET)
- Detroit (YIP)
- Douglas Bisbee (DUG)
- Dover (DOV)
- Dubois (DUJ)
- Dubuque (DBQ)
- Durant (DUA)
- East Farmingdale (FRG)
- Eastover (MMT)
- Edwards (EDW)
- El Centro (NJK)
- El Dorado (ELD)
- Elizabeth City (ECG)
- Elkins (EKN)
- Ely (ELY)
- Ely (LYU)
- Enid (END)
- Eureka (EKA)
- Evanston (EVW)
- Fairbanks (EIL)
- Fairbanks (FBK)
- Fairfield (SUU)
- Fallon (NFL)
- Fayetteville (FYV)
- Findlay (FDY)
- Fort Belvoir (DAA)
- Fort Benning (LSF)
- Fort Bliss/El Paso (BIF)
- Fort Bragg (FBG)
- Fort Bragg (POB)
- Fort Campbell (HOP)
- Fort Carson (FCS)
- Fort Huachuca / Sierra Vista (FHU)
- Fort Indiantown Gap(Annville) (MUI)
- Fort Irwin/Barstow (BYS)
- Fort Knox (FTK)
- Fort Lauderdale (FXE)
- Fort Leonard Wood (TBN)
- Fort Lewis/Tacoma (GRF)
- Fort Meade(Odenton) (FME)
- Fort Myers (FMY)
- Fort Pierce (FPR)
- Fort Polk (POE)
- Fort Riley (Junction City) (FRI)
- Fort Rucker/Ozark (OZR)
- Fort Sill (FSI)
- Fort Stockton (FST)
- Fort Worth (AFW)
- Fort Worth (FTW)
- Fort Worth (FWH)
- Franklin (FKL)
- Gallup (GUP)
- Galveston (GLS)
- Gary (GYY)
- Glendale (LUF)
- Glendive (GDV)
- Glens Falls (GFL)
- Goldsboro (GSB)
- Goodland (GLD)
- Grand Canyon - Tusayan (GCN)