| 1 | IFS | Italy First | IATA: IF, Callsign: Riviera, Designator IF* recalled by IATA. ICAO callsign changed from Italy First | I | AVCODES |
| 2 | IFS | International Flying Serivces | IATA: F4, Name changed to Eureca Srl | I | AVCODES |
| 3 | IFS | Flying Services Srl | | I | AVCODES |
| 4 | IFS | Italy First | | | ICAO1 |
| 5 | IFS | International Freight Systems | | USA | TRAFFIC |
| 6 | IFSA | INTERSTATE FREIGHT SYSTEMS INC | | | SCAC4 |
| 7 | IFSB | ILLINI F S INC | | | SCAC4 |
| 8 | IFSD | IFS DEDICATED INC | | | SCAC4 |
| 9 | IFSE | INTERNATIONAL FREIGHT SERVICES | | | SCAC4 |
| 10 | IFSG | INTERPORT FREIGHT SYSTEMS INC | | | SCAC4 |
| 11 | IFSI | IFS INTERNATIONAL FREIGHT SYSTEMS I | | | SCAC4 |
| 12 | IFSJ | INTERNATIONAL FIRST SERVICE USA INC | | | SCAC4 |
| 13 | IFSK | INSTITUTE FOR SHIPBOARD EDUCATION | | | SCAC4 |
| 14 | IFSM | IFS NEUTRAL MARITIME SERVICE INC | | | SCAC4 |
| 15 | IFSN | INNOVATIVE FREIGHT SYSTEMS | | | SCAC4 |
| 16 | IFSP | INTERNATIONAL FREIGHT SERVICES INC | | | SCAC4 |
| 17 | IFSQ | INTERNATIONAL FLATBED SERVICES | | | SCAC4 |
| 18 | IFSR | INTERNATIONAL FREIGHT SERVICES INC | | | SCAC4 |
| 19 | IFSS | INLINE FIBERGLASS LTD | | | SCAC4 |
| 20 | IFSU | INTERFACE4SOLUTIONS | | B | BIC |
| 21 | IFSU | INTERLINK FREIGHT SYSTEMS | | | PWRC |
| 22 | IFSU | Interlink Freight Systems | | | RSRV |
| 23 | IFSV | INTERCON FLOAT SERVICE | | | SCAC4 |
