| Akron Canton Regional Airport | Akron | CAK · KCAK | 2 |
| Albert J Ellis Airport | Richlands | OAJ · KOAJ | 1 |
| Aleknagik / New Airport | Aleknagik | WKK | 1 |
| Alexandria International Airport | Alexandria | AEX · KAEX | 2 |
| Alliance Municipal Airport | Alliance | AIA · KAIA | 3 |
| Alpena County Regional Airport | Alpena | APN · KAPN | 2 |
| Altoona Blair County Airport | Altoona | AOO · KAOO | 2 |
| Ambler Airport | Ambler | ABL · PAFM | 2 |
| Anaktuvuk Pass Airport | Anaktuvuk Pass | AKP · PAKP | 1 |
| Aniak Airport | Aniak | ANI · PANI | 1 |
| Anvik Airport | Anvik | ANV · PANV | 1 |
| Appleton International Airport | Appleton | ATW · KATW | 2 |
| Arctic Village Airport | Arctic Village | ARC · PARC | 1 |
| Arlington Municipal Airport | Arlington | KAWO | 2 |
| Arnold Palmer Regional Airport | Latrobe | LBE · KLBE | 1 |
| Asheville Regional Airport | Asheville | AVL · KAVL | 1 |
| Aspen-Pitkin County Airport (Sardy Field) | Aspen | ASE · KASE | 1 |
| Atlantic City International Airport | Atlantic City | ACY · KACY | 2 |
| Atqasuk Edward Burnell Sr Memorial Airport | Atqasuk | ATK · PATQ | 1 |
| Augusta Regional At Bush Field | Augusta | AGS · KAGS | 2 |
| Augusta State Airport | Augusta | AUG · KAUG | 2 |
| Austin Executive Airport | Pflugerville | KEDC | 2 |
| Austin Straubel International Airport | Green Bay | GRB · KGRB | 2 |
| Bangor International Airport | Bangor | BGR · KBGR | 1 |
| Barkley Regional Airport | Paducah | PAH · KPAH | 2 |
| Barter Island Long Range Radar Station Airport | Barter Island | BTI · PABA | 1 |
| Baton Rouge Metropolitan Airport | Baton Rouge | BTR · KBTR | 2 |
| Bellingham International Airport | Bellingham | BLI · KBLI | 1 |
| Bert Mooney Airport | Butte | BTM · KBTM | 2 |
| Bethel Airport | Bethel | BET · PABE | 3 |
| Bill & Hillary Clinton National Airport/Adams Field | Little Rock | LIT · KLIT | 3 |
| Billings Logan International Airport | Billings | BIL · KBIL | 3 |
| Bishop International Airport | Flint | FNT · KFNT | 2 |
| Bismarck Municipal Airport | Bismarck | BIS · KBIS | 2 |
| Blue Grass Airport | Lexington | LEX · KLEX | 2 |
| Bob Baker Memorial Airport | Kiana | IAN · PAIK | 1 |
| Boone County Airport | Harrison | HRO · KHRO | 1 |
| Boulder City Municipal Airport | Boulder City | BLD · KBVU | 2 |
| Bozeman Yellowstone International Airport | Bozeman | BZN · KBZN | 4 |
| Bradford Regional Airport | Bradford | BFD · KBFD | 2 |
| Brainerd Lakes Regional Airport | Brainerd | BRD · KBRD | 3 |
| Branson Airport | Branson | BKG · KBBG | 1 |
| Brownsville South Padre Island International Airport | Brownsville | BRO · KBRO | 2 |
| Brunswick Golden Isles Airport | Brunswick | BQK · KBQK | 1 |
| Buchanan Field | Concord | CCR · KCCR | 4 |
| California Redwood Coast-Humboldt County Airport | Arcata/Eureka | ACV · KACV | 2 |
| Canyonlands Regional Airport | Moab | CNY · KCNY | 1 |
| Cape Cod Gateway Airport | Hyannis | HYA · KHYA | 2 |
| Cape Girardeau Regional Airport | Cape Girardeau | CGI · KCGI | 2 |
| Cape Lisburne LRRS Airport | Cape Lisburne | LUR · PALU | 1 |
| Capital Region International Airport | Lansing | LAN · KLAN | 3 |
| Casper-Natrona County International Airport | Casper | CPR · KCPR | 2 |
| Cavern City Air Terminal | Carlsbad | CNM · KCNM | 4 |
| Cedar City Regional Airport | Cedar City | CDC · KCDC | 2 |
| Central Illinois Regional Airport at Bloomington-Normal | Bloomington/Normal | BMI · KBMI | 2 |
| Central Nebraska Regional Airport | Grand Island | GRI · KGRI | 2 |
| Central Wisconsin Airport | Mosinee | CWA · KCWA | 2 |
| Central Wyoming Regional Airport | Riverton | RIW · KRIW | 2 |
| Chadron Municipal Airport | Chadron | CDR · KCDR | 2 |
| Charles M. Schulz Sonoma County Airport | Santa Rosa | STS · KSTS | 2 |
| Charlottesville Albemarle Airport | Charlottesville | CHO · KCHO | 1 |
| Chattanooga Metropolitan Airport (Lovell Field) | Chattanooga | CHA · KCHA | 2 |
| Cherry Capital Airport | Traverse City | TVC · KTVC | 2 |
| Cheyenne Regional Jerry Olson Field | Cheyenne | CYS · KCYS | 2 |
| Chicago Rockford International Airport | Chicago/Rockford | RFD · KRFD | 2 |
| Chippewa County International Airport | Kincheloe | CIU · KCIU | 2 |
| Chippewa Valley Regional Airport | Eau Claire | EAU · KEAU | 2 |
| Cincinnati Municipal Airport Lunken Field | Cincinnati | LUK · KLUK | 3 |
| Clovis Municipal Airport | Clovis | CVN · KCVN | 3 |
| Coastal Carolina Regional Airport | New Bern | EWN · KEWN | 2 |
| Cold Bay Airport | Cold Bay | CDB · PACD | 2 |
| Columbia Metropolitan Airport | Columbia | CAE · KCAE | 2 |
| Columbia Regional Airport | Columbia | COU · KCOU | 2 |
| Columbus Airport | Columbus | CSG · KCSG | 2 |
| Concord-Padgett Regional Airport | Concord | USA · KJQF | 1 |
| Corpus Christi International Airport | Corpus Christi | CRP · KCRP | 2 |
| Cortez Municipal Airport | Cortez | CEZ · KCEZ | 1 |
| Dane County Regional Truax Field | Madison | MSN · KMSN | 3 |
| Dawson Community Airport | Glendive | GDV · KGDV | 2 |
| Daytona Beach International Airport | Daytona Beach | DAB · KDAB | 3 |
| Deadhorse Airport | Deadhorse | SCC · PASC | 1 |
| Decatur Airport | Decatur | DEC · KDEC | 3 |
| Deering Airport | Deering | DRG · PADE | 2 |
| DeKalb Peachtree Airport | Atlanta | PDK · KPDK | 4 |
| Delta County Airport | Escanaba | ESC · KESC | 2 |
| Destin Executive Airport | Destin | DSI · KDTS | 1 |
| Destin-Fort Walton Beach Airport | Valparaiso | VPS · KVPS | 2 |
| Devils Lake Regional Airport | Devils Lake | DVL · KDVL | 2 |
| Dickinson Theodore Roosevelt Regional Airport | Dickinson | DIK · KDIK | 2 |
| Dillingham Airport | Dillingham | DLG · PADL | 1 |
| Dodge City Regional Airport | Dodge City | DDC · KDDC | 2 |
| Dothan Regional Airport | Dothan | DHN · KDHN | 2 |
| Dover Civil Air Terminal/Dover Air Force Base | Dover | DOV · KDOV | 2 |
| DuBois Regional Airport | Dubois | DUJ · KDUJ | 1 |
| Dubuque Regional Airport | Dubuque | DBQ · KDBQ | 2 |
| Duluth International Airport | Duluth | DLH · KDLH | 2 |
| Durango La Plata County Airport | Durango | DRO · KDRO | 1 |
| Eagle County Regional Airport | Eagle | EGE · KEGE | 1 |
| East Texas Regional Airport | Longview | GGG · KGGG | 2 |
| Eastern Oregon Regional Airport at Pendleton | Pendleton | PDT · KPDT | 2 |