American Airlines flights from Ontario to San Francisco

Recent searches for flights from Ontario to San Francisco

Mar 2026
From$649*
Updated: 8 hours ago
Round tripIEconomy
Apr 2026
From$344*
Updated: 19 hours ago
Round tripIEconomy
May 2026
From$465*
Updated: 19 hours ago
Round tripIEconomy
$475
$1.1K
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    • range$475-$1,057

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Ontario to San Francisco flights

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    Ontario (ONT)to

    San Francisco (SFO)
    09/24/26 - 09/28/26

    Round trip

    Economy

    from
    $299Fare subject to changes
    Updated: 22 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    09/26/26 - 09/28/26

    Round trip

    Economy

    from
    $299Fare subject to changes
    Updated: 22 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    04/13/26 - 04/15/26

    Round trip

    Economy

    from
    $344Fare subject to changes
    Updated: 19 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    09/26/26 - 09/27/26

    Round trip

    Economy

    from
    $348Fare subject to changes
    Updated: 22 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    04/23/26 - 04/30/26

    Round trip

    Economy

    from
    $380Fare subject to changes
    Updated: 20 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    09/25/26 - 09/28/26

    Round trip

    Economy

    from
    $411Fare subject to changes
    Updated: 22 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    07/21/26 - 08/01/26

    Round trip

    Economy

    from
    $418Fare subject to changes
    Updated: 23 hours ago

    Ontario (ONT)to

    San Francisco (SFO)
    09/25/26 - 09/27/26

    Round trip

    Economy

    from
    $460Fare subject to changes
    Updated: 22 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    American Airlines flights from Ontario to San Francisco

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