| 1 | BTA | Britt Airways, Inc., d/b/a Continental Express Inc. / Air Mike Express | Callsign: Jet Link, Name changed to Expressjet Airlines, Inc. d/b/a Continental Express | USA | AVCODES |
| 2 | BTA | Expressjet Airlines, Inc. d/b/a Continental Express | Callsign: Jet Link, IATA Prefix: 565, Name changed from Britt Airways, Inc., d/b/a Continental Express Inc. / Air Mike Express | USA | AVCODES |
| 3 | BTA | Britt Airlines, Inc. | Callsign: Britt-Air, | USA | AVCODES |
| 4 | BTA | Belcanto Airlines | Callsign: Belcanto, | BY | AVCODES |
| 5 | BTA | ExpressJet | IATA: XE | | ICAO1 |
| 6 | BTAA | BOWSER TRANSPORTATION SYSTEM INC | | | SCAC3 |
| 7 | BTAA | BLESSED TO BE A BLESSING INC | | | SCAC4 |
| 8 | BTAB | B & T TRANSPORTATION INC | | | SCAC3 |
| 9 | BTAB | BROOKS TRANSPORT | | | SCAC4 |
| 10 | BTAC | BETLEY, A CARTAGE INC | | | SCAC3 |
| 11 | BTAC | B THREE (B3) COMMUNICATIONS INC | | | SCAC4 |
| 12 | BTAD | BERTINOIA, DONALD K | | | SCAC3 |
| 13 | BTAE | BATTEATE, ALBERT A TRUCKING | | | SCAC3 |
| 14 | BTAE | BUCKSHIRE CORPORATION | | | SCAC4 |
| 15 | BTAF | BAILEY TRANSFER CO | | | SCAC3 |
| 16 | BTAG | BEAR TRANSPORTATION SERVICES, INC. | | | SCAC3 |
| 17 | BTAG | BEAR TRANSPORTATION SERVICES L P | | | SCAC4 |
| 18 | BTAG | Bantåg - Railcare Group | | S | TRAFFIC |
| 19 | BTAH | BRIDGER TRANSPORTATION INC | | | SCAC3 |
| 20 | BTAI | BARRETA TRANSPORTATION INC | | | SCAC3 |
| 21 | BTAJ | BELL TRANS INC | | | SCAC3 |
| 22 | BTAK | BUTLER TRANSPORT INC | | | SCAC3 |
| 23 | BTAK | BUTLER TRANSPORT INC | | | SCAC4 |
| 24 | BTAL | BARLETTE TRANSPORT LTD | | | SCAC3 |
| 25 | BTAL | BOULMETIS, TANYA | | | SCAC4 |
| 26 | BTAM | BATES, GARY | | | SCAC4 |
| 27 | BTAN | BEST TRANSPORT | | | SCAC3 |
| 28 | BTAO | BERTRAND OIL COMPANY | | | SCAC3 |
| 29 | BTAO | BELTRAN BELTRAN, JESUS A | | | SCAC4 |
| 30 | BTAP | B TWO (2) TRANSPORTATION INC | | | SCAC4 |
| 31 | BTAQ | BREEDING TRANSFER & STORAGE INC | | | SCAC3 |
| 32 | BTAR | BETLEY ARMORED COURIER INC | | | SCAC3 |
| 33 | BTAS | BARNETT TRANSPORTATION INC | | | SCAC3 |
| 34 | BTAS | BARNETT TRANSPORTATION INC | | | SCAC4 |
| 35 | BTAT | BUSTERS TRAILER TOTERS | | | SCAC3 |
| 36 | BTAT | BURNS, TATE | | | SCAC4 |
| 37 | BTAX | Air Liquide IC GP LLC d/b/a Air Liquide Industrial U.S. LP | added 7/2008 | | NAKINA |
| 38 | BTAX | Air Liquide America Corp. | added 4/1997; 7/2000-7/2005; eliminated 7/2008 | | NAKINA |
| 39 | BTAX | Big Three Lincoln-Alaska, Inc. | added 10/1981; 1/1994; eliminated 4/1997 | | NAKINA |
| 40 | BTAX | Big Three Lincoln-Alaska, Inc. | added 10/81; 1/94; eliminated 4/97 | | NRHS |
| 41 | BTAX | Air Liquide America Corp. | added 4/97; 7/2000 | | NRHS |
| 42 | BTAX | *BIG THREE LINCOLN ALASKA, INC. | | | PWRC |
| 43 | BTAX | +AIR LIQUIDE AMERICA CORP. | | | PWRC |
| 44 | BTAX | Big Three Lincoln-Alaska (Air Liquide America Corporation) | | | RSRV |
| 45 | BTAX | BIG THREE LINCOLN ALASKA, INC. | | | SCAC4 |
| 46 | BTAZ | (BRAX) BRAE CORPORATION | | | PWRC |
