| 1 | ITU | Intervuelos, S.A. de C.V. | Callsign: Interlos, | MEX | AVCODES |
| 2 | ITU | Intervuelos | | | ICAO1 |
| 3 | ITU | Inter-Urban Ry. (Des Moines & Central Iowa R.R.) | 8/1920-7/1923 | | NAKINA |
| 4 | ITU | DES MOINES & CENTRAL IOWA RAILROAD [INTER-URBAN RWY.] | | | PWRC |
| 5 | ITUKA | Itsukaichi Railway | 1925 - 1940 | J | TRAFFIC |
| 6 | ITUL | I T UNLOADING INC | | | SCAC4 |
| 7 | ITUN | INTUNE INC | | | SCAC4 |
