Find cheap flights from Ontario to San Francisco

Alaska Airlines, Delta, Japan Airlines, and American Airlines offer inflight Wi-Fi service on the Ontario to San Francisco flight route.

The Airbus A320neo is the aircraft model that flies most regularly on the Ontario to San Francisco flight route.

Star Alliance is the only airline alliance operating flights between Ontario and San Francisco.

There are direct flights from Ontario to San Francisco on a daily basis.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to San Francisco.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Francisco with an airline and back to Ontario with another airline.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.