Fort Smith to Lewiston, Idaho: Road Trip Guide & Distance

How far is Fort Smith from Lewiston, Idaho?

The distance from Fort Smith to Lewiston, Idaho is 1398 miles (2249.8 km) as the crow flies. Lewiston, Idaho is located NW of Fort Smith. By car, the driving distance is approximately 1677.6 miles, taking about 33h 45min. A direct flight would take roughly 3h 19min. Both are located in United States — Fort Smith in Arkansas and Lewiston, Idaho in Idaho.

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. 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 Fort Smith 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.