Planning a flight from Ontario to San Francisco?

Flight prices from Ontario to San Francisco change depending on demand and time of booking.

The lowest fare seen in the past 15 days was $40.

Many users find better fares by booking several weeks in advance. In fact, for many routes, booking early is one of the best ways to save.

Which airports near Ontario or San Francisco offer flights?

In many cases, using a nearby airport can improve your chances of finding direct flights or better rates.

• Airports in Ontario: Only Ontario is currently operating.
• Airports in San Francisco: San Francisco is the only airport in use at the moment.

Secondary airports can offer faster travel thanks to shorter lines and quicker boarding times than major ones.

Find the best flight from Ontario to San Francisco

With Jetcost, you can filter results by flight time, airline, price range, and layovers. Choose direct or connecting flights, round-trip or one-way, and compare offers from Delta, American, United, and more.

Other popular destinations

Searching for flights to United States? Travelers also looked at: Atlanta, Los Angeles, Miami, New York City, Orlando.

Use filters to exclude options that don’t match your budget or travel preferences and personalize your search for Ontario – San Francisco flights.