Idaho Falls to Tri-Cities: Road Trip Guide & Distance

How far is Idaho Falls from Tri-Cities?

The distance from Idaho Falls to Tri-Cities is 399.7 miles (643.2 km) as the crow flies. Tri-Cities is located WNW of Idaho Falls. By car, the driving distance is approximately 479.6 miles, taking about 9h 39min. A direct flight would take roughly 1h 18min. Both are located in United States — Idaho Falls in Idaho and Tri-Cities in Washington.

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 Idaho Falls and Tri-Cities. 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.