Helena, Montana to Kennewick: Road Trip Guide & Distance

How far is Helena, Montana from Kennewick?

The distance from Helena, Montana to Kennewick is 339.3 miles (546 km) as the crow flies. Kennewick is located W of Helena, Montana. By car, the driving distance is approximately 407.1 miles, taking about 8h 11min. A direct flight would take roughly 1h 11min. Both are located in United States — Helena, Montana in Montana 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 Helena, Montana 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.