| 1 | BAL | Britannia Airways Limited | IATA: BY, Callsign: Britannia, IATA Prefix: 754, Name changed to Thomsonfly Limited | GB | AVCODES |
| 2 | BAL | Britannia Airways Ltd. t/a Budget Air | IATA: BY, Callsign: Thomson, IATA Prefix: 754, | GB | AVCODES |
| 3 | BAL | Belle Air Europe s.r.l. | IATA: L9, Callsign: Belle Italy, Ceased operations on 25 November 2013. | I | AVCODES |
| 4 | BAL | Britannia Airways | | | ICAO1 |
| 5 | BAL | Balaton Volán | | H | TRAFFIC |
| 6 | BALA | BALTIC CORPORATION | | | SCAC3 |
| 7 | BALB | BALBONI EXPRESS CO | | | SCAC3 |
| 8 | BALC | BALL BROTHERS TRUCKING COMPANY, INC | | | SCAC3 |
| 9 | BALF | BALIK TRUCKING | | | SCAC3 |
| 10 | BALF | BALTIC FREIGHTLINES INC | | | SCAC4 |
| 11 | BALG | BALGUERIE, ALFRED S A | | | SCAC3 |
| 12 | BALG | BALGUERIE, ALFRED S A-TRANSO | | | SCAC4 |
| 13 | BALI | BALL, A L MOVING & STORAGE | | | SCAC3 |
| 14 | BALJ | BALLEW, J & SONS INC | | | SCAC3 |
| 15 | BALK | BALTIMORE STORAGE COMPANY, THE | | | SCAC3 |
| 16 | BALL | BEALL TRANSPORTATION INC | | | SCAC3 |
| 17 | BALL | BALLARD PETROLEUM | | | SCAC4 |
| 18 | BALM | BALOR MARINE CORP | | | SCAC4 |
| 19 | BALN | BALLENTINE PRODUCE, INC | | | SCAC3 |
| 20 | BALO | B & B LINES INC | | | SCAC3 |
| 21 | BALO | BALL TRANSPORT INC | | | SCAC4 |
| 22 | BALP | BALLENTINE TRANSPORT INC | | | SCAC3 |
| 23 | BALQ | BALTIMORE TANK LINES | | | SCAC3 |
| 24 | BALR | BALLARD INC | | | SCAC4 |
| 25 | BALS | BALSER TRUCK CO | | | SCAC3 |
| 26 | BALS | BALSER TRUCK CO | | | SCAC4 |
| 27 | BALT | BAL TRANSPORT | | | SCAC4 |
| 28 | BALTA | SAI Baltijas Autobusu Linjas, Riga | | LV | TRAFFIC |
| 29 | BALU | SPEDITION BAUMLE GMBH | | D | BIC |
| 30 | BALU | BALT-CANADA LINES | | | SCAC3 |
| 31 | BALU | TRANSPORTATION GMBH&CO.KG | | | SCAC4 |
| 32 | BALV | BALTIMORE TANK LINES OF VIRGINIA IN | | | SCAC4 |
| 33 | BALX | Bayer Corp. | added 7/2002; 7/2005; eliminated 1/2010 | | NAKINA |
| 34 | BALX | BAYER CORP (VIA BAAM LEASING CO.) | | | PWRC |
| 35 | BALX | Bayer Corporation | | | RSRV |
| 36 | BALX | BAYER CORPORATION | | | SCAC4 |
| 37 | BALY | BANTA, LYNN L INC | | | SCAC3 |
