London, Ontario, Canada to St. Louis: Road Trip Guide & Distance

How far is London, Ontario, Canada from St. Louis?

The distance from London, Ontario, Canada to St. Louis is 556.7 miles (896 km) as the crow flies. St. Louis is located WSW of London, Ontario, Canada. By car, the driving distance is approximately 668.1 miles, taking about 13h 26min. A direct flight would take roughly 1h 37min. London, Ontario, Canada is in Ontario, Canada, while St. Louis is in Missouri, United States.

This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements.

Coordinates come from public place data for London, Ontario, Canada and St. Louis. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.