Seinäjoki / Ilmajoki, Finland
| IATA Code | SJY |
| ICAO Code | EFSI |
| Type | Medium Airport |
| City | Seinäjoki / Ilmajoki |
| Country | Finland |
| Region | Southern Ostrobothnia |
| Continent | Europe |
| Latitude | 62.692101 |
| Longitude | 22.832300 |
| Elevation | 92.0 m |
| Time Zone | Europe/Helsinki |
| Local Time | — |