Monterey to Ontario: Road Trip Guide & Distance

How far is Monterey from Ontario?

The distance from Monterey to Ontario is 296.5 miles (477.2 km) as the crow flies. Ontario is located SE of Monterey. By car, the driving distance is approximately 370.6 miles, taking about 7h 27min. A direct flight would take roughly 1h 6min. Both are located in United States.

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

Coordinates come from public place data for Monterey and Ontario. 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.