Driving distance from Seattle, WA to O'Fallon, MO is 2052 miles (3303 km). How far is it from Seattle, WA to O'Fallon, MO? It's a 31 hours 27 minutes drive by car. Flight distance is approximately 1691 miles (2721 km) and flight time from Seattle, WA to O'Fallon, MO is 03 hours 24 minutes. Don't forget to check out our "Gas cost calculator" option. It will calculate cost of driving this particular distance. See the map below for the visual display of the upcoming road trip.
To travel the distance from Seattle, WA to O'Fallon, MO, please, click on the map to see the route for the journey. "Gas Cost Calculator" tool is to your right. You can always modify it and make the number more applicable for your journey.
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