Cheap flights from Ontario to San Francisco

Travel > North America > United States > Ontario to San Francisco flights

San Francisco has been a well-known tourist destination for decades. There is an endless array of activities to choose from so whether you're looking to tour the legendary penitentiary of Alcatraz, sample Dungeness crab in a local bistro, drive through a gargantuan Redwood tree, or ride the cable cars for a panoramic view of the city, you can do it all. The options are wide open so go ahead and take it all in, in San Francisco.... (read more in our San Francisco Travel Guide)

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Cheapest flights found for the next 6 months

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Check our newest flight offers to San Francisco:

  • $118United Airlines flight United Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Francisco, CA (SFO)03/15/201705:05 pm
    San Francisco, CA (SFO)Ontario, CA (ONT)03/21/201707:15 am
    faredepot.com check price
  • $128United Airlines flight United Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Francisco, CA (SFO)02/04/201707:15 pm
    San Francisco, CA (SFO)Ontario, CA (ONT)02/12/201706:00 am
    faredepot.com check price
  • $133United Airlines flight United Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Francisco, CA (SFO)02/02/201707:15 pm
    San Francisco, CA (SFO)Ontario, CA (ONT)02/11/201706:00 am
    faredepot.com check price
  • $420Air Canada flight Air Canada 
    FromToDepartureTime
    Toronto, ON (YYZ)San Francisco, CA (SFO)02/06/201708:00 am
    San Francisco, CA (SFO)Toronto, ON (YYZ)02/14/201711:45 am
    faredepot.com check price
  • $618Air Canada flight Air Canada 
    FromToDepartureTime
    Windsor, ON (YQG)San Francisco, CA (SFO)02/16/201705:55 pm
    San Francisco, CA (SFO)Windsor, ON (YQG)02/26/201710:50 pm
    faredepot.com check price
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Multiple AirlinesDetroit To Greenville Multiple Airlines airfares from Detroit in February
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