Great Falls to Lewiston, Idaho: Road Trip Guide & Distance

How far is Great Falls from Lewiston, Idaho?

The distance from Great Falls to Lewiston, Idaho is 279.7 miles (450.2 km) as the crow flies. Lewiston, Idaho is located WSW of Great Falls. By car, the driving distance is approximately 349.7 miles, taking about 7h 2min. A direct flight would take roughly 1h 4min. Both are located in United States — Great Falls in Montana and Lewiston, Idaho in Idaho.

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. 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 Great Falls and Lewiston, Idaho. 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.