Cornwall to Portland, Maine: Road Trip Guide & Distance

How far is Cornwall from Portland, Maine?

The distance from Cornwall to Portland, Maine is 240 miles (386.3 km) as the crow flies. Portland, Maine is located ESE of Cornwall. By car, the driving distance is approximately 300.1 miles, taking about 6h 2min. A direct flight would take roughly 59min. Cornwall is in Ontario, Canada, while Portland, Maine is in Maine, United States.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. 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.

Coordinates come from public place data for Cornwall and Portland, Maine. 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.