| 1 | LSX | Atlas Executive Air, S.A. | Callsign: Atlas Exec, | E | AVCODES |
| 2 | LSX | C.C. Lang & Son Inc. | 1/1941-7/1954; eliminated 4/1956 | | NAKINA |
| 3 | LSX | Lackawanna Steel Co. (Bethlehem Steel Co.) | 7/1923 | | NAKINA |
| 4 | LSX | Lackawanna Steel Co. | 8/1920 | | NAKINA |
| 5 | LSX | C.C. Lang & Son Inc. | Jan-52 | | NRHS |
| 6 | LSX | *BETHLEHEM STEEL CO. {LACKAWANNA STEEL CO.] | | | PWRC |
| 7 | LSX | *C.C. LANG & SON INC. | | | PWRC |
| 8 | LSX | *LUZERNE & SUSQUEHANNA RAILWAY CO. | | | PWRC |
| 9 | LSXA | LES TRANSPORTS A T D INC | | | SCAC4 |
| 10 | LSXB | LASER TRANSPORT LLC | | | SCAC4 |
| 11 | LSXC | L & S TRANSPORT INC | | | SCAC4 |
| 12 | LSXD | LST EXPRESS LTD | | | SCAC4 |
| 13 | LSXE | LASER EXPEDITED TRANSPORTATION (THE | | | SCAC4 |
| 14 | LSXI | LAKESIDE EXPRESS INC | | | SCAC3 |
| 15 | LSXK | LISA'S TRANSPORT TRUCKING INC | | | SCAC4 |
| 16 | LSXO | LASA TRANSPORT | | | SCAC4 |
| 17 | LSXP | LASER EXPRESS INC | | | SCAC3 |
| 18 | LSXT | LITOS TRANSPORT | | | SCAC4 |
| 19 | LSXX | LOCOMOTIVE SALES 7 LEASING CORP. | | | PWRC |
| 20 | LSXX | LOCOMOTIVE SALES AND LEASING CORPOR | | | SCAC4 |
