Calculate route from Janssen (airport) (Illinois, United States) to O'Fallon (Missouri, United States).
The flight distance (as the crow flies) between Janssen (airport) and O'Fallon is 270.4 km.
Roadmap (route) to go from Janssen Airport to O'Fallon detailed above, you can also see the course layout on the map.
While doing trip Janssen (airport) - O'Fallon by car, the calculated route ends at a distance , or more straight.
Country flag | ![]() |
Location | O'Fallon |
State | Missouri |
County | Saint Charles County |
Country | United States |
Country code / ISO 2 | US |
Latitude | 38.8106100 |
Longitude | -90.6998500 |
Altitude | 165 meters |
Time zone | America/Chicago |