Ontario to Seattle: Road Trip Guide & Distance

How far is Ontario from Seattle?

The distance from Ontario to Seattle is 966.7 miles (1555.8 km) as the crow flies. Seattle is located NNW of Ontario. By car, the driving distance is approximately 1169.9 miles, taking about 22h 10min. A direct flight would take roughly 2h 27min. Both are located in United States — Ontario in California and Seattle in Washington.

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 Ontario and Seattle. The driving distance uses an OSRM road-route result when route data is available. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.