Calculate route from St Clair Regional (airport) (Missouri, United States) to Alton (Illinois, United States).
The flight distance (as the crow flies) between St Clair Regional (airport) and Alton is 89.5 km.
Roadmap (route) to go from St Clair Regional Airport to Alton detailed above, you can also see the course layout on the map.
While doing trip St Clair Regional (airport) - Alton by car, the calculated route ends at a distance , or more straight.
| Country flag | ![]() |
| Location | Alton |
| State | Illinois |
| County | Madison County |
| Country | United States |
| Country code / ISO 2 | US |
| Latitude | 38.8906000 |
| Longitude | -90.1842800 |
| Altitude | 150 meters |
| Time zone | America/Chicago |