| - | - | Bethany Memorial | Bethany | |
| JBT | - | Bethel Sea Plane Base | Bethel | |
| - | - | Betz | Blissfield | |
| - | - | Beulah | Beulah | |
| - | - | Bibb Co | Centreville | |
| BYS | - | Bicycle Lake Army Air Field | Fort Irwin | |
| - | - | Biddeford Municipal | Biddeford | |
| RBF | - | Big Bear City Airport | Big Bear | |
| - | - | Big Creek | Big Creek | |
| - | - | Big Falls Municipal | Big Falls | |
| - | - | Big Foot | Walworth | |
| BGQ | - | Big Lake Airport | Big Lake | |
| BMX | - | Big Mountain Airport | Big Mountain | |
| WBR | KRQB | Big Rapids Airport | Big Rapids | |
| - | - | Big Sandy | Big Sandy | |
| - | - | Big Sky | Culbertson | |
| - | - | Big Southern Butte | Atomic City | |
| - | - | Big Spring Mc Mahon-Wrinkle | Big Spring | |
| - | - | Big Timber | Big Timber | |
| - | KFOZ | Bigfork Municipal | Bigfork | |
| - | PABV | Birchwood Airport | Birchwood | |
| ESP | - | Birchwood-Pocono Airport | East Stroudsburg | |
| - | - | Bird'S Nest | Austin | |
| BSQ | - | Bisbee Municipal Airport | Bisbee | |
| DUG | KDUG | Bisbee-Douglas International Airport | Douglas | |
| - | - | Bishop Municipal | Bishop | |
| - | - | Bismarck Memorial | Bismarck | |
| - | - | Bison Municipal | Bison | |
| SPF | KSPF | Black Hills Airport | Spearfish | |
| - | - | Black Memorial | Halls Crossing | |
| - | - | Black Mountain | Cheboygan | |
| - | - | Black Rapids | Black Rapids | |
| - | KBCK | Black River Falls Area | Black River Falls | |
| - | KZUN | Black Rock | Zuni Pueblo | |
| - | - | Blackhawk | Madison | |
| BKT | KBKT | Blackstone Army Air Field | Blackstone | |
| - | - | Blackwell | Ozark | |
| BWL | - | Blackwell Airport | Blackwell | |
| - | - | Bladenboro | Bladenboro | |
| BWS | - | Blaine Airport | Blaine | |
| - | - | Blair | Blair | |
| - | - | Blairstown | Blairstown | |
| - | - | Blairsville | Blairsville | |
| - | - | Blake | Delta | |
| BYW | - | Blakely Island Airport | Blakely Island | |
| - | - | Blanca | Blanca | |
| BDG | KBDG | Blanding Airport | Blanding | |
| - | - | Bloom | Jamestown | |
| - | - | Bloomfield Municipal | Bloomfield | |
| - | - | Bloomfield Municipal | Bloomfield | |