| 1 | BUT | Burjat Airlines | IATA: U4, Callsign: Buravia, | RUS | AVCODES |
| 2 | BUT | Butlers Aviation | Callsign: Butlers, | BS | AVCODES |
| 3 | BUTA | BURT, A A | | | SCAC3 |
| 4 | BUTC | BURREN TRANSFER COMPANY | | | SCAC3 |
| 5 | BUTC | BUTCHER TRANSPORTATION SERVICE INC | | | SCAC4 |
| 6 | BUTD | BUECHLER TRUCKING INC | | | SCAC3 |
| 7 | BUTE | BLUE TRUCKING | | | SCAC3 |
| 8 | BUTE | BUTTE GRAIN MERCHANTS LTD | | | SCAC4 |
| 9 | BUTF | BUTLER FUEL & SONS INC | | | SCAC4 |
| 10 | BUTG | BULLET TRUCKING | | | SCAC4 |
| 11 | BUTI | BUNERO TRUCKING | | | SCAC3 |
| 12 | BUTI | BURTON TRUCK LINES INC | | | SCAC4 |
| 13 | BUTJ | Butjadinger Bahn | | D | TRAFFIC |
| 14 | BUTL | BURGGRABE TRUCK LINES, INC | | | SCAC3 |
| 15 | BUTL | BU TRUCKING LLC | | | SCAC4 |
| 16 | BUTM | BUTLER TRUCKING COMPANY INC (A PA C | | | SCAC3 |
| 17 | BUTM | BUTLER TRUCKING COMPANY | | | SCAC4 |
| 18 | BUTN | BOUTIN, V EXPRESS, INC | | | SCAC3 |
| 19 | BUTN | BOUTIN, V EXPRESS INC | | | SCAC4 |
| 20 | BUTO | BURRIS, RAY TRUCK LINE INC | | | SCAC3 |
| 21 | BUTQ | BUD TRANSPORT INC | | | SCAC4 |
| 22 | BUTR | BRUNSWICK TRAILER SALES & RV'S INC | | | SCAC4 |
| 23 | BUTS | BULK TRANSPORT SERVICE INC | | | SCAC3 |
| 24 | BUTT | BUTT, H E | | | SCAC4 |
| 25 | BUTU | BROINTERMED LINES LIMITED | | GB | BIC |
| 26 | BUTU | BROINTERMED LTD. | | | SCAC3 |
| 27 | BUTU | BEAUTIFUL CONTAINERS LTD | | | SCAC4 |
| 28 | BUTY | BUCHAN TRUCKING CO | | | SCAC3 |
| 29 | BUTY | BUCHAN TRUCKING LLC | | | SCAC4 |
