Idaho Falls to Sioux Falls: Road Trip Guide & Distance

How far is Idaho Falls from Sioux Falls?

The distance from Idaho Falls to Sioux Falls is 766 miles (1232.7 km) as the crow flies. Sioux Falls is located E of Idaho Falls. By car, the driving distance is approximately 919.1 miles, taking about 18h 29min. A direct flight would take roughly 2h 2min. Both are located in United States — Idaho Falls in Idaho and Sioux Falls in South Dakota.

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. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. 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 Idaho Falls and Sioux Falls. 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.