Calculate route from Washington County (airport) (Missouri, United States) to O'Fallon (Illinois, United States).

The flight distance (as the crow flies) between Washington County (airport) and O'Fallon is 103.0 km.

Roadmap (route) to go from Washington County Airport to O'Fallon detailed above, you can also see the course layout on the map.

While doing trip Washington County (airport) - O'Fallon by car, the calculated route ends at a distance , or more straight.