Boston, Massachusetts to London, Ontario, Canada: Road Trip Guide & Distance

How far is Boston, Massachusetts from London, Ontario, Canada?

The distance from Boston, Massachusetts to London, Ontario, Canada is 518.3 miles (834.2 km) as the crow flies. London, Ontario, Canada is located W of Boston, Massachusetts. By car, the driving distance is approximately 622 miles, taking about 12h 31min. A direct flight would take roughly 1h 33min. Boston, Massachusetts is in Massachusetts, 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. 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 Boston, Massachusetts 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.