| 1 | INL | Morgan Intertrades (Nig.) Limited | Callsign: Intertrades, | WAN | AVCODES |
| 2 | INL | Intal Avia | Callsign: Intal Avia, Ceased Operations. | KS | AVCODES |
| 3 | INL | Intal Avia | | | ICAO1 |
| 4 | INLA | INLAND CONTAINERS CORP | | | SCAC4 |
| 5 | INLE | INNES LIVESTOCK | | | SCAC4 |
| 6 | INLF | INTERNATIONAL FORWARDERS INC | | | SCAC4 |
| 7 | INLG | INTERMODAL LOGISTICS | | | SCAC4 |
| 8 | INLH | INLINE TRANSPORTATION LLC | | | SCAC4 |
| 9 | INLJ | IONIKOS NAVIGATION LTD | | | SCAC4 |
| 10 | INLN | IN LINE FUEL CORP | | | SCAC4 |
| 11 | INLP | INTERNATIONAL TRANSPORT INC | | | SCAC4 |
| 12 | INLR | INLAND TRANSPORTATION & LOGISTICS I | | | SCAC4 |
| 13 | INLT | INTERNATIONAL LOGISTICS TRANSPORT I | | | SCAC4 |
| 14 | INLU | TRANSLINER PTE LTD | | SGP | BIC |
| 15 | INLU | INTERLINE SHIPPING PTE LTD | | | SCAC4 |
| 16 | INLW | INTRANSIT LLC | | | SCAC4 |
| 17 | INLX | Mittel Steel USA-Incoal Inc. | added 10/2007 | | NAKINA |
| 18 | INLX | Incoal Co. | added 10/1988; 1/1994-7/2005; eliminated 10/2007 | | NAKINA |
| 19 | INLX | Inland Steel Co. | eliminated 10/1988 | | NAKINA |
| 20 | INLX | Inland Steel Coal Co. | added 10/1975; 1/1980 | | NAKINA |
| 21 | INLX | Inland Steel Co. | added 7/1968; 4/1970-1/1975; eliminated 10/1975 | | NAKINA |
| 22 | INLX | Inland Steel Co. | added 7/68; 4/70-1/75 | | NRHS |
| 23 | INLX | Inland Steel Coal Co. | Jan-80 | | NRHS |
| 24 | INLX | Inland Steel Co. | eliminated 10/88 | | NRHS |
| 25 | INLX | Incoal Co. | added 10/88; 1/94-7/2000 | | NRHS |
| 26 | INLX | MITTAL STEEL USE - INCOAL INC. [INLAND STEEL COAL CO.] | | | PWRC |
| 27 | INLX | Inland Steel Coal (Incoal) | | | RSRV |
| 28 | INLX | INCOAL COMPANY | | | SCAC4 |
| 29 | INLY | INLAND CONTRACT CARRIERS | | | SCAC4 |
