| 1 | BUC | Bulgarian Air Charter Ltd. | IATA: H6, Callsign: Bulgarian Charter, Name changed to European Air Charter. | BG | AVCODES |
| 2 | BUC | European Air Charter Ltd. | IATA: H6, Callsign: Eurocharter, Name changed from Bulgarian Air Charter. ICAO callsign changed from Bulgarian Charter. | BG | AVCODES |
| 3 | BUC | Bulgarian Air Charter | | | ICAO1 |
| 4 | BUCA | BUCHANAN TRUCKING CO | | | SCAC3 |
| 5 | BUCA | BUCHANAN OIL CO | | | SCAC4 |
| 6 | BUCC | BURNETT CONSTRUCTION COMPANY | | | SCAC3 |
| 7 | BUCC | BUCCI STABLES | | | SCAC4 |
| 8 | BUCD | BUCHHOLZ, A TRUCKING | | | SCAC3 |
| 9 | BUCE | BUCCANEER ENTERPRISES INC | | | SCAC4 |
| 10 | BUCF | BUCHANAN TRANSPORT INC | | | SCAC3 |
| 11 | BUCG | BURNETT, C G | | | SCAC3 |
| 12 | BUCH | BUCHANAN OIL CORPORATION | | | SCAC4 |
| 13 | BUCI | BUCCANEER MOVING & STORAGE INC | | | SCAC3 |
| 14 | BUCJ | BACKHAULING USA CORP | | | SCAC4 |
| 15 | BUCK | BUCKLER TRANSPORT INC | | | SCAC4 |
| 16 | BUCL | BUCKEYE STORAGE COMPANY, THE | | | SCAC3 |
| 17 | BUCM | BUCKLEY CARTAGE LIMITED | | | SCAC4 |
| 18 | BUCM | Metroul din București | City: București | RO | TRAFFIC |
| 19 | BUCN | BOUCHER TRUCKING | | | SCAC4 |
| 20 | BUCO | BURRARD CARTAGE CO LTD | | | SCAC3 |
| 21 | BUCP | BUCKLEY, JOSEPH F, JR | | | SCAC3 |
| 22 | BUCP | BUCKEYE TRANSPORTATION | | | SCAC4 |
| 23 | BUCR | BURCH TRANSPORT INC | | | SCAC3 |
| 24 | BUCR | BUNCH TRANSPORT INC | | | SCAC4 |
| 25 | BUCS | BUCHMEIER & SONS INC | | | SCAC3 |
| 26 | BUCS | BUCKEYE LOGISTICS LLC | | | SCAC4 |
| 27 | BUCT | BUTLER, CHARLES T JR | | | SCAC4 |
| 28 | BUCU | GEORG BUCHNER INTERN. SPEDITION GMBH | | D | BIC |
| 29 | BUCU | GEORG BUCHNER INTERN SPEDITION GMBH | | | SCAC4 |
| 30 | BUCW | BUTLER CARRIERS INC | | | SCAC3 |
| 31 | BUCY | BURGENER CONTRACT CARRIERS | | | SCAC3 |
