Ottawa, Ontario, Canada to St. Thomas: Road Trip Guide & Distance

How far is Ottawa, Ontario, Canada from St. Thomas?

The distance from Ottawa, Ontario, Canada to St. Thomas is 327.8 miles (527.5 km) as the crow flies. St. Thomas is located WSW of Ottawa, Ontario, Canada. By car, the driving distance is approximately 397.6 miles, taking about 7h 54min. A direct flight would take roughly 1h 10min. Both are located in Canada.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. 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.

Coordinates come from public place data for Ottawa, Ontario, Canada and St. Thomas. The driving distance uses an OSRM road-route result when route data is available. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.