| 1 | ICA | Icaro | Callsign: Icarfly, | I | AVCODES |
| 2 | ICA | Intercoastal Airways, Inc. | Callsign: Intercoastal, | USA | AVCODES |
| 3 | ICA | Intercontinental Aero Leasing (Pty) Ltd | Callsign: Intercargo, | SD | AVCODES |
| 4 | ICA | Inversiones Tiryka C.A. | Callsign: Tiryka, | YV | AVCODES |
| 5 | ICA | Icaro | | | ICAO1 |
| 6 | ICAC | INTER-CAL CONTRACT CARRIERS | | | SCAC1 |
| 7 | ICAC | INTRA-CAL CONTRACT CARRIERS | | | SCAC4 |
| 8 | ICAL | INTERNATIONAL CARGO LOGISTICS | | | SCAC4 |
| 9 | ICAM | INSULATION CORPORATION OF | | | SCAC4 |
| 10 | ICAO | ICAT LOGISTICS INC | | | SCAC4 |
| 11 | ICAP | HOLIDAY ON ICE | | | PWRC |
| 12 | ICAQ | INTER CANADA A M EXPRESS INC | | | SCAC4 |
| 13 | ICAR | IMPORTACIONES Y EXPORTACIONES CALIF | | | SCAC4 |
| 14 | ICAT | INTER-CAL TRANSPORT | | | SCAC1 |
| 15 | ICAU | ICON INTERNATIONAL CONTAINER SERVICE (AMERICA) LLC | | USA | BIC |
| 16 | ICAU | Icon International Container Service | | | RSRV |
| 17 | ICAX | Inland Refining Co. | 8/1920-7/1923 | | NAKINA |
| 18 | ICAX | INLAND REFINING CO. | | | PWRC |
