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San Francisco (SFO) » United States » SFO to ONT
Good to Know - Flights from San Francisco to Ontario
$ 47.94
or less (round trip)
Top Tips for Finding Cheap Flights from San Francisco to Ontario
Looking for cheap airfare from San Francisco to Ontario? 25% of our users found round-trip tickets to Ontario for the following price or less: $ 47.94 Book at least 4 weeks before departure in order to get a below-average price. Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco to Ontario flight deals.
FAQs - Booking from San Francisco to Ontario flights
The cheapest flight San Francisco to Ontario found on flyus.com in the last 72 hours was $47.94 round-trip.
Find cheap flights from San Francisco to Ontario and book discounted airfare from different cities all over the United States. Explore airline ticket deals on flight routes all over the World! At Flyus, we take pride in helping you discover and book the best flight deals for your next trip at the cheapest price. We make booking flights from different departures easy and provide you with peace of mind with our Best Purchase Guarantee.
Cheapest Flights
from San Francisco, United States (SFO) to:
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Ontario, United States (ONT)Jan 19, 25 - Jan 26, 25$47.94
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Ontario, United States (ONT)Feb 27, 25 - Mar 03, 25$47.94
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Ontario, United States (ONT)Feb 21, 25 - Feb 23, 25$47.94
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Ontario, United States (ONT)Feb 17, 25 - Feb 20, 25$47.94
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Ontario, United States (ONT)Feb 07, 25 - Feb 14, 25$47.94