Alaska Airlines Flights from Santa Rosa to Ontario

Lowest fares from Santa Rosa to Ontario

Aug 2026
From$219*
Seen: 1 day ago
Flight Type One Way|Saver
Sep 2026
From$109*
Seen: 3 hours ago
Flight Type One Way|Saver
Oct 2026
Try another month to see offers
cmp-daily-histogram-bars-legend-min-price-aria-label $219
Displaying fares for August-2026
  • STS–ONT, Aug 10, 2026: From $324
    10

    Mo

    AUG

  • STS–ONT: cmp-view-offers-disclaimer. Find Offers
    11

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    We

  • STS–ONT, Aug 13, 2026: From $324
    13

    Th

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    14

    Fr

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    15

    Sa

  • STS–ONT, Aug 16, 2026: From $324
    16

    Su

  • STS–ONT, Aug 17, 2026: From $219
    17

    Mo

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    18

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    19

    We

  • STS–ONT, Aug 20, 2026: From $219
    20

    Th

  • STS–ONT, Aug 21, 2026: From $219
    21

    Fr

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    22

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    23

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    24

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    26

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    27

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    28

    Fr

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    29

    Sa

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    30

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    31

    Mo

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    We

    • Range$219-$324

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Santa Rosa to Ontario.*

    $
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    One-way low-fare flights Santa Rosa to Ontario.*
    From
    To
    Fare Type
    Dates
    Price
    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 20, 2026

    From

    $219

    Seen: 1 day ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 17, 2026

    From

    $219

    Seen: 18 hours ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 21, 2026

    From

    $219

    Seen: 1 day ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Sep 16, 2026

    From

    $109

    Seen: 3 hours ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Nov 21, 2026

    From

    $159

    Seen: 7 hours ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 16, 2026

    From

    $324

    Seen: 6 hours ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 10, 2026

    From

    $324

    Seen: 1 hour ago

    Santa Rosa (STS)Ontario (ONT)One-way
    |
    Saver    		Depart: Aug 13, 2026

    From

    $324

    Seen: 40 minutes ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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