Alaska Airlines Flights from San Diego to Denver

Lowest fares from San Diego to Denver

Mar 2026
From$139*
Seen: 1 hour ago
Flight Type One Way|Saver
Apr 2026
From$46*
Seen: 1 day ago
Flight Type One Way|Saver
May 2026
From$26*
Seen: 2 hours ago
Flight Type One Way|Saver
$59
$783
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    • Range$59-$783

    *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 San Diego to Denver.*

    $
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    One-way low-fare flights San Diego to Denver.*
    From
    To
    Fare Type
    Dates
    Price
    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: May 13, 2026

    From

    $26

    Seen: 2 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 28, 2026

    From

    $46

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 18, 2026

    From

    $59

    Seen: 1 day ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 17, 2026

    From

    $59

    Seen: 23 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: May 2, 2026

    From

    $59

    Seen: 9 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 15, 2026

    From

    $59

    Seen: 3 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 1, 2026

    From

    $59

    Seen: 3 hours ago

    San Diego (SAN)Denver (DEN)One-way
    |
    Saver    		Depart: Apr 14, 2026

    From

    $59

    Seen: 1 day 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.

    Explore Alaska Airlines's Flights to Top-Pick Destinations