| Blackwell Tonkawa Municipal Airport | Blackwell | BWL · KBKN | 1 |
| Blanding Municipal Airport | Blanding | BDG · KBDG | 1 |
| Blosser Municipal Airport | Concordia | CNK · KCNK | 2 |
| Blue Canyon Nyack Airport | Emigrant Gap | BLU · KBLU | 1 |
| Blytheville Municipal Airport | Blytheville | HKA · KHKA | 1 |
| Bomar Field / Shelbyville Municipal Airport | Shelbyville | SYI · KSYI | 1 |
| Boone Municipal Airport | Boone | BNW · KBNW | 2 |
| Borrego Valley Airport | Borrego Springs | BXS | 1 |
| Boswell Bay Airport | Boswell Bay | BSW | 1 |
| Boulder Municipal Airport | Boulder | WBU · KBDU | 2 |
| Boundary Airport | Boundary | BYA | 1 |
| Bowers Field | Ellensburg | ELN · KELN | 1 |
| Bowman Regional Airport | Bowman | BWM | 0 |
| Brackett Field | La Verne | POC · KPOC | 2 |
| Bradshaw Army Airfield | Waimea (Kamuela) | BSF · PHSF | 1 |
| Brawley Municipal Airport | Brawley | BWC · KBWC | 1 |
| Brewster Field | Holdrege | HDE · KHDE | 2 |
| Brigham City Regional Airport | Brigham City | BMC · KBMC | 1 |
| Britton Municipal Airport | Britton | TTO · KBTN | 2 |
| Broadus Airport | Broadus | BDX | 1 |
| Broken Bow Municipal Airport | Broken Bow | BBW · KBBW | 1 |
| Brookhaven Calabro Airport | Shirley | WSH · KHWV | 2 |
| Brookings Airport | Brookings | BOK · KBOK | 1 |
| Brookings Regional Airport | Brookings | BKX · KBKX | 2 |
| Browns Airport | Weeping Water | EPG | 2 |
| Brownwood Regional Airport | Brownwood | BWD · KBWD | 2 |
| Bruce Campbell Field | Madison | DXE · KMBO | 1 |
| Brunswick Municipal Airport | Lawrenceville | LVL · KLVL | 1 |
| Bryant Army Airfield | Fort Richardson | FRN · PAFR | 1 |
| Buckeye Municipal Airport | Buckeye | BXK · KBXK | 1 |
| Bullfrog Basin Airport | Bullfrog | BFG | 1 |
| Butler Co Regional Airport - Hogan Field | Hamilton | HAO · KHAO | 1 |
| Butler Memorial Airport | Butler | BUM · KBUM | 1 |
| C David Campbell Field Corsicana Municipal Airport | Corsicana | CRS · KCRS | 2 |
| Cabaniss Field Naval Outlying Landing Field | Corpus Christi | NGW · KNGW | 2 |
| Cairo Regional Airport | Cairo | CIR · KCIR | 2 |
| Caledonia County Airport | Lyndonville | LLX · KCDA | 1 |
| Calexico International Airport | Calexico | CXL · KCXL | 1 |
| Calverton Executive Airpark | Calverton | CTO | 1 |
| Cambridge Dorchester Airport | Cambridge | CGE · KCGE | 1 |
| Canandaigua Airport | Ontario County IDA | IUA | 1 |
| Candle 2 Airport | Candle | CDL | 1 |
| Canton Municipal Airport | Canton | CTK | 1 |
| Cantwell Airport | Cantwell | PATW | 1 |
| Cape Air Seaplanes on Boston Harbor Seaplane Base | Boston | BNH | 0 |
| Cape Cod Coast Guard Air Station | Falmouth | FMH · KFMH | 2 |
| Cape Pole Seaplane Base | Cape Pole | CZP | 1 |
| Cape Sarichef Airport | Cape Sarichef | WSF · PACS | 2 |
| Capital City Airport | Harrisburg | HAR · KCXY | 2 |
| Capital City Airport | Frankfort | FFT · KFFT | 1 |
| Captain Jack Thomas El Dorado Airport | El Dorado | EDK · KEQA | 2 |
| Carbon County Regional Airport / Buck Davis Field | Price | PUC · KPUC | 3 |
| Casa Grande Municipal Airport | Casa Grande | CGZ · KCGZ | 1 |
| Cascade Airport | Cascade | ICS | 1 |
| Cascade Locks State Airport | Cascade Locks | CZK · KCZK | 1 |
| Casco Cove Coast Guard Station | Attu | ATU · PAAT | 1 |
| Catalina Air-Sea Terminal Heliport | San Pedro | SPQ | 1 |
| Catalina Airport | Avalon | AVX · KAVX | 1 |
| Cattaraugus County-Olean Airport | Olean | OLE · KOLE | 2 |
| Centerville Municipal Airport | Centerville | GHM · KGHM | 1 |
| Central Jersey Regional Airport | Manville | JVI | 1 |
| Central Maine/Norridgewock Airport | Norridgewock | OWK · KOWK | 2 |
| Centralia Municipal Airport | Centralia | ENL · KENL | 2 |
| Century City Heliport | Los Angeles | CCD | 1 |
| Cessna Aircraft Field | Wichita | CEA · KCEA | 1 |
| Challis Airport | Challis | CHL · KLLJ | 1 |
| Chandalar Lake Airport | Chandalar Lake | WCR · PALR | 1 |
| Chase Field Industrial Airport | Beeville | NIR | 3 |
| Chautauqua County-Dunkirk Airport | Dunkirk | DKK · KDKK | 2 |
| Chehalis Centralia Airport | Chehalis | CLS · KCLS | 1 |
| Chena Hot Springs Airport | Chena Hot Springs | CEX | 1 |
| Chennault International Airport | Lake Charles | CWF · KCWF | 1 |
| Cheraw Municipal Airport/Lynch Bellinger Field | Cheraw | HCW · KCQW | 1 |
| Chernofski Harbor Seaplane Base | Chernofski Harbor | KCN | 1 |
| Cherokee County Airport | Jacksonville | JKV · KJSO | 1 |
| Chester County G O Carlson Airport | Coatesville | CTH · KMQS | 1 |
| Chickasha Municipal Airport | Chickasha | CHK · KCHK | 3 |
| Chico Regional Airport | Chico | CIC · KCIC | 2 |
| Chignik Bay Seaplane Base | Chignik | KBW | 2 |
| Chignik Lagoon Airport | Chignik Flats | KCL | 1 |
| Chiloquin State Airport | Chiloquin | CHZ | 1 |
| Chino Airport | Chino | CNO · KCNO | 3 |
| Chisana Airport | Chisana | CZN | 1 |
| Chistochina Airport | Chistochina | CZO | 1 |
| Chitina Airport | Chitina | CXC | 1 |
| Circle Hot Springs Airport | Circle Hot Springs | CHP | 1 |
| Claremont Municipal Airport | Claremont | CNH · KCNH | 1 |
| Clarence E Page Municipal Airport | Oklahoma City | KRCE | 2 |
| Clarksville–Montgomery County Regional Airport | Clarksville | CKV · KCKV | 2 |
| Clayton Municipal Airpark | Clayton | CAO · KCAO | 2 |
| Clearwater Air Park | Clearwater | CLW · KCLW | 1 |
| Cliff Hatfield Memorial Airport | Calipatria | CLR · KCLR | 1 |
| Clinton Municipal Airport | Clinton | CWI · KCWI | 2 |
| Clinton Regional Airport | Clinton | CLK · KCLK | 2 |
| Clinton Sherman Airport | Clinton | CSM · KCSM | 2 |
| Clintonville Municipal Airport | Clintonville | CLI · KCLI | 3 |
| Cochise County Airport | Willcox | CWX | 1 |
| Coffeyville Municipal Airport | Coffeyville | CFV · KCFV | 2 |
| Coldfoot Airport | Coldfoot | CXF · PACX | 1 |
| Coleman Municipal Airport | Coleman | COM · KCOM | 1 |