Great Falls to London, Ontario, Canada: Road Trip Guide & Distance

How far is Great Falls from London, Ontario, Canada?

The distance from Great Falls to London, Ontario, Canada is 1485.8 miles (2391.2 km) as the crow flies. London, Ontario, Canada is located E of Great Falls. By car, the driving distance is approximately 1783 miles, taking about 35h 52min. A direct flight would take roughly 3h 29min. Great Falls is in Montana, United States, while London, Ontario, Canada is in Ontario, Canada.

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. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.

Coordinates come from public place data for Great Falls and London, Ontario, Canada. 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.