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Cheap Flights from Ontario to San Francisco $110.6

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Cheapest Flights from Ontario to San Francisco (ONT to SFO)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Ontario to San Francisco (ONT to SFO)

Question : What is the cheapest day to fly in the next four weeks?
Answer : As of December 5th, the cheapest day to fly from Ontario to San Francisco is December 13th. Tickets have been sold for 35% below the average price for this route.

Question : How long do most people stay in San Francisco when they fly in from Ontario?
Answer : Of course you're not most people, but if you were, you'd stay roughly eight days.

Question : If having the most departure times is important to you, are there particular days that offer more options than others?
Answer : When you're flying from ONT to SFO, the day with the most flight times is Wednesday, with 140 different options. Note that Saturday offers the least number of options with 105 flight times.

Question : Should you be aware of any airlines that have a reputation of delays for this route?
Answer : United Airlines flights from ONT to SFO are delayed 67% of the time. If you're on United Airlines, be sure to sign up for the delay notifications to stay up to date with your flight's status.