| 1 | ICN | Inter-Canadian | Callsign: Inter-Canadian, suspended operations in December 1999. Entered bankruptcy in April 2000. | CDN | AVCODES |
| 2 | ICN | Inter-Canadian | IATA: ND, Designator ND recalled by IATA | CDN | AVCODES |
| 3 | ICN | Iconair (Pvt) Ltd. | | PK | AVCODES |
| 4 | ICN | Inter-Canadian | | | ICAO1 |
| 5 | ICNE | INTERCONEX INC | | | SCAC4 |
| 6 | ICNH | ICON TRANSPORTATION INC | | | SCAC4 |
| 7 | ICNP | ICON TRANSPORTATION COMPANY, INC | | | SCAC1 |
| 8 | ICNS | ICON INTERNATIONAL INC | | | SCAC4 |
| 9 | ICNT | ICON TECHNOLOGIES LIMITED | | | SCAC4 |
| 10 | ICNU | ICT (INTERN CONTAINER TRANSPORT) GM | | | SCAC4 |
| 11 | ICNW | IRRIGATION COMPONENTS NORTHWEST | | | SCAC4 |
