Cheap flights from Ontario to San Francisco
Selected dates may not give results due to COVID-19. We suggest you change the dates.
Round trip One way
Round trip
One way
Select departure
No results match your search criteria
  • Latest searches
Select arrival
No results match your search criteria
  • Latest searches
Round trip One way
Round trip
One way
{{ weekDay }}
{{ panel.label }}
Looking for a one-way flight?
{{ fromDate | dateToDayNumber }}

{{ fromDate | dateToMonthName }}

{{ fromDate | dateToDayName }}

{{ flexibleFromDateLabel }}
{{ option.label }}
?
{{ flexibleToDateLabel }}
{{ option.label }}
Class and passengers
Class
Economy
Available for Economy only
Number of passengers
Adults
{{ adults }}
Children
{{ children }}
Infants
{{ infants }}
  • Compare with:
    Sponsored

Airlines

Airlines providing flights to San Francisco from Ontario

DELTA
DELTA
Frontier Airlines
Frontier Airlines
United
United

Find cheap flights from Ontario to San Francisco

Airways Flights helps you compare the best deals to San Francisco, offering the most cost effective solutions for your trip. Find your airline ticket at the best price in seconds by comparing fares from hundreds of airlines and online travel agencies in a single search!

Customize your search

Looking for a Ontario - San Francisco direct flight? In just a few seconds, our comparator will provide you with the best deals for your flight by selecting your travel optionsfrom more than 400 airlines: just filter your search according to your needs.

Find the Ontario - San Francisco low cost flight you prefer

Airways Flights, once you enter your departure and arrival cities, will compare thousands of offers based on your needs.

Filter your search

Airways Flights offers the possibility to customize your search according to different criteria:

  • Only direct flights
  • Only flights of one airline
  • Only flights departing or arriving at a specific airport
Other filters allow you to check prices for nearby dates to save even more on your trip to United States.

How do we get the info you see here? Please note that we offer an online comparison service and that all information and prices regarding services and/or products available on our website are provided by our third-party partners. We do our best to show you up-to-date information, but please note that we are not responsible for the completeness or accuracy of the information published, so please check all conditions carefully on the website of the partner before making a booking. Please check our Terms and Conditions for more details. Read more