Flights from Ontario/LA, CA to Oakland, CA

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Best Deals on Flights From Ontario/LA, CA (ONT) to Oakland, CA (OAK)

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Aug 2026
No results for this month.
Sep 2026
from$89*
Last seen: 15 hours ago
One-way/Economy
Oct 2026
from$98*
Last seen: 15 hours ago
One-way/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $89
Displaying fares for August-2026
  • ONT–OAK: cmp-view-offers-disclaimer. Find Offers
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  • ONT–OAK, Sep 4, 2026: from $159
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  • ONT–OAK, Sep 6, 2026: from $159
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  • ONT–OAK, Sep 9, 2026: from $149
    09

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  • ONT–OAK, Sep 11, 2026: from $149
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  • ONT–OAK, Sep 20, 2026: from $109
    20

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  • ONT–OAK, Sep 29, 2026: from $89
    29

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    • Range$89-$159

    *Prices found by others in the previous 48 hours for round-trip flights. Prices shown may also require membership in our travel club, Discount Den.

    Flights Deals from Ontario/LA, CA to Oakland, CA on Frontier

    $
    Flights Deals from Ontario/LA, CA to Oakland, CA on Frontier
    From
    To
    Ontario/LA, CA (ONT)Oakland, CA (OAK)One-way
    /
    Discount Den Basic Fare    		Departing Nov 30, 2026

    From

    $154

    Last seen: 15 hours ago

    *Prices found by others in the previous 48 hours for one-way flights. Prices shown may also require membership in our travel club, Discount Den®.

    Ontario/LA, CA Oakland, CA

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