Idaho Falls to Kennewick: Road Trip Guide & Distance

How far is Idaho Falls from Kennewick?

The distance from Idaho Falls to Kennewick is 396.1 miles (637.5 km) as the crow flies. Kennewick is located WNW of Idaho Falls. By car, the driving distance is approximately 475.3 miles, taking about 9h 34min. A direct flight would take roughly 1h 18min. Both are located in United States — Idaho Falls in Idaho and Kennewick 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 Kennewick. 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.