| 1 | SUF | Sun Air (Pacific) Limited. | IATA: PI, Callsign: Sunflower, IATA Prefix: 252, Designator PI recalled by IATA. Name changed from Sunflower Airlines Ltd. IATA designator changed from 2S | FJI | AVCODES |
| 2 | SUF | Sunflower Airlines Ltd. | IATA: PI, Callsign: Sunflower, IATA Prefix: 252, Name changed to Sun Air (Pacific) Limited. IATA designator changed from 2S | FJI | AVCODES |
| 3 | SUF | Sunflower Airlines Ltd. | IATA: 2S, Callsign: Sunflower, IATA designator changed to PI | FJI | AVCODES |
| 4 | SUF | Sun Air (Fiji) | IATA: PI | | ICAO1 |
| 5 | SUFA | SOUTH FLORIDA CARTAGE INC | | | SCAC4 |
| 6 | SUFB | Suffolk Bus Corporation | | USA | TRAFFIC |
| 7 | SUFF | SUPERIOR FAST FREIGHT | | | SCAC4 |
| 8 | SUFH | SUPERIOR FUELS INC | | | SCAC4 |
| 9 | SUFJ | SUNWELL TECHNOLOGIES INC | | | SCAC4 |
| 10 | SUFM | SUNNY MIROCA FARMS | | | SCAC4 |
| 11 | SUFO | SUPER FUEL OIL CO | | | SCAC4 |
| 12 | SUFP | SUPERIOR FOREST PRODUCTS INC | | | SCAC4 |
| 13 | SUFS | SUNCREST FARMS | | | SCAC4 |
| 14 | SUFT | SUPERFAST TRUCK LINE | | | SCAC4 |
| 15 | SUFT | Suffolk Transit | | USA | TRAFFIC |
| 16 | SUFU | SEA LION LTD. | | | SCAC4 |
| 17 | SUFY | SUPERIOR TIRE LLC | | | SCAC4 |
| 18 | SUFZ | SUPERIOR FERTILIZER | | | PWRC |
