Alaska Airlines Flights from Seattle to Denver

Lowest fares from Seattle to Denver

Aug 2026
From$129*
Seen: 37 minutes ago
Flight Type One Way|Saver
Sep 2026
From$129*
Seen: 7 hours ago
Flight Type One Way|Saver
Oct 2026
From$134*
Seen: 13 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $129
cmp-daily-histogram-bars-legend-max-price-aria-label $295
Displaying fares for August-2026
  • SEA–DEN, Aug 8, 2026: From $295
    08

    Sa

    AUG

  • SEA–DEN, Aug 9, 2026: From $295
    09

    Su

  • SEA–DEN, Aug 10, 2026: From $295
    10

    Mo

  • SEA–DEN, Aug 11, 2026: From $295
    11

    Tu

  • SEA–DEN, Aug 12, 2026: From $295
    12

    We

  • SEA–DEN, Aug 13, 2026: From $295
    13

    Th

  • SEA–DEN, Aug 14, 2026: From $295
    14

    Fr

  • SEA–DEN, Aug 15, 2026: From $235
    15

    Sa

  • SEA–DEN, Aug 16, 2026: From $235
    16

    Su

  • SEA–DEN, Aug 17, 2026: From $235
    17

    Mo

  • SEA–DEN, Aug 18, 2026: From $235
    18

    Tu

  • SEA–DEN, Aug 19, 2026: From $235
    19

    We

  • SEA–DEN, Aug 20, 2026: From $235
    20

    Th

  • SEA–DEN, Aug 21, 2026: From $185
    21

    Fr

  • SEA–DEN, Aug 22, 2026: From $185
    22

    Sa

  • SEA–DEN, Aug 23, 2026: From $185
    23

    Su

  • SEA–DEN, Aug 24, 2026: From $185
    24

    Mo

  • SEA–DEN, Aug 25, 2026: From $185
    25

    Tu

  • SEA–DEN, Aug 26, 2026: From $185
    26

    We

  • SEA–DEN, Aug 27, 2026: From $185
    27

    Th

  • SEA–DEN, Aug 28, 2026: From $159
    28

    Fr

  • SEA–DEN, Aug 29, 2026: From $129
    29

    Sa

  • SEA–DEN, Aug 30, 2026: From $159
    30

    Su

  • SEA–DEN, Aug 31, 2026: From $159
    31

    Mo

  • SEA–DEN, Sep 1, 2026: From $129
    01

    Tu

    SEP

  • SEA–DEN, Sep 2, 2026: From $134
    02

    We

  • SEA–DEN, Sep 3, 2026: From $170
    03

    Th

  • SEA–DEN, Sep 4, 2026: From $190
    04

    Fr

  • SEA–DEN, Sep 5, 2026: From $134
    05

    Sa

  • SEA–DEN, Sep 6, 2026: From $160
    06

    Su

  • SEA–DEN, Sep 7, 2026: From $209
    07

    Mo

    • Range$129-$295

    *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 Seattle to Denver.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to Denver.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Nov 18, 2026

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Dec 5, 2026

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Dec 12, 2026

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 6, 2027

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 9, 2027

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $134

    Seen: 13 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Aug 29, 2026

    From

    $129

    Seen: 36 minutes ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Sep 1, 2026

    From

    $129

    Seen: 7 hours 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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