| 1 | BLH | Blue Horizon Travel Club | Callsign: Blue Horizon, | USA | AVCODES |
| 2 | BLH | Blue Horizon Travel Club | | | ICAO1 |
| 3 | BLHA | BL Handel & Logistik GmbH | | DE | VKM |
| 4 | BLHB | BALHAM SHIPPING COMPANY | | | SCAC3 |
| 5 | BLHC | BOLICH CONTRACTING SERVICE INC | | | SCAC4 |
| 6 | BLHD | BLUE HEN DELIVERY CO | | | SCAC3 |
| 7 | BLHF | BLACK HAWK FREIGHT SERVICES INC | | | SCAC3 |
| 8 | BLHG | BEE LINE HAULING INC | | | SCAC3 |
| 9 | BLHI | BLACK HILLS TRUCKING INC | | | SCAC3 |
| 10 | BLHI | B & L HOTSHOT TRUCKING LLC | | | SCAC4 |
| 11 | BLHJ | BLOOMSTRAND, HARTZELL C | | | SCAC3 |
| 12 | BLHJ | B-LINER HOT SHOT TRANSPORTATION SER | | | SCAC4 |
| 13 | BLHJ | Bjärred - Lund - Harlösa Järnväg | 1918 - 1939 | S | svenska-lok.se |
| 14 | BLHL | BLACK HILLS TRUCKING CO | | | SCAC3 |
| 15 | BLHL | BLUE HILL ENTERPRISES INC | | | SCAC4 |
| 16 | BLHM | BLACHETTE MOVING & STORAGE CO | | | SCAC3 |
| 17 | BLHM | BLENHEIM STABLES | | | SCAC4 |
| 18 | BLHN | BLS CHARTERS INC | | | SCAC4 |
| 19 | BLHO | BLUE HOUND CONNECTION, THE | | | SCAC3 |
| 20 | BLHO | BLACKHORSE TRANSPORTATION LTD | | | SCAC4 |
| 21 | BLHP | B & L HAULING | | | SCAC4 |
| 22 | BLHQ | BLANCHETT TRUCKING COMPANY | | | SCAC3 |
| 23 | BLHR | BALHAM SHIPPING COMPANY | | | SCAC3 |
| 24 | BLHS | BEE LINE HOT SHOT SERVICE INC | | | SCAC3 |
| 25 | BLHS | BEALSTHIES | | | SCAC4 |
| 26 | BLHT | BLACK, HUGH TRUCKING COMPANY | | | SCAC3 |
| 27 | BLHV | BEACON LOGISTICS LLC | | | SCAC4 |
| 28 | BLHW | BLACHOWSKE TRUCK LINE | | | SCAC3 |
| 29 | BLHW | BLACHOWSKE TRUCK LINE | | | SCAC4 |
| 30 | BLHX | Baldwin-Lima-Hamilton Corp., Industrial Equipment Division | added 1/1961; 4/1961-4/1970; eliminated 7/1972 | | NAKINA |
| 31 | BLHX | Baldwin-Lima-Hamilton Corp., Eddystone Division | eliminated 1/1961 | | NAKINA |
| 32 | BLHX | Baldwin-Lima-Hamilton Corp. | added 4/1954; 7/1954; 10/1957 | | NAKINA |
| 33 | BLHX | Baldwin-Lima-Hamilton Corp. | added 4/54; 10/57 | | NRHS |
| 34 | BLHX | Baldwin-Lima-Hamilton Corp., Industrial Equipment Division | 4/61-4/70 | | NRHS |
| 35 | BLHX | BALDWIN-LIMA-HAMILTON CORP. | | | PWRC |
| 36 | BLHX | BALDWIN-LIMA-HAMILTON CORP | | | SCAC3 |
| 37 | BLHX | Baldwin-Lima-Hamilton Corp. | | USA | TRAFFIC |