Alaska Airlines Flights from Denver to Seattle

Lowest fares from Denver to Seattle

Sep 2026
From$144*
Seen: 16 hours ago
Flight Type One Way|Saver
Oct 2026
From$79*
Seen: 16 hours ago
Flight Type One Way|Saver
Nov 2026
From$79*
Seen: 16 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $79
cmp-daily-histogram-bars-legend-max-price-aria-label $324
Displaying fares for September-2026
  • DEN–SEA, Sep 6, 2026: From $305
    06

    Su

    SEP

  • DEN–SEA, Sep 7, 2026: From $305
    07

    Mo

  • DEN–SEA, Sep 8, 2026: From $305
    08

    Tu

  • DEN–SEA, Sep 9, 2026: From $305
    09

    We

  • DEN–SEA, Sep 10, 2026: From $305
    10

    Th

  • DEN–SEA, Sep 11, 2026: From $245
    11

    Fr

  • DEN–SEA, Sep 12, 2026: From $245
    12

    Sa

  • DEN–SEA, Sep 13, 2026: From $245
    13

    Su

  • DEN–SEA, Sep 14, 2026: From $245
    14

    Mo

  • DEN–SEA, Sep 15, 2026: From $245
    15

    Tu

  • DEN–SEA, Sep 16, 2026: From $245
    16

    We

  • DEN–SEA, Sep 17, 2026: From $245
    17

    Th

  • DEN–SEA, Sep 18, 2026: From $245
    18

    Fr

  • DEN–SEA, Sep 19, 2026: From $195
    19

    Sa

  • DEN–SEA, Sep 20, 2026: From $324
    20

    Su

  • DEN–SEA, Sep 21, 2026: From $215
    21

    Mo

  • DEN–SEA, Sep 22, 2026: From $195
    22

    Tu

  • DEN–SEA, Sep 23, 2026: From $195
    23

    We

  • DEN–SEA, Sep 24, 2026: From $195
    24

    Th

  • DEN–SEA, Sep 25, 2026: From $195
    25

    Fr

  • DEN–SEA, Sep 26, 2026: From $144
    26

    Sa

  • DEN–SEA, Sep 27, 2026: From $180
    27

    Su

  • DEN–SEA, Sep 28, 2026: From $180
    28

    Mo

  • DEN–SEA, Sep 29, 2026: From $144
    29

    Tu

  • DEN–SEA, Sep 30, 2026: From $144
    30

    We

  • DEN–SEA, Oct 1, 2026: From $124
    01

    Th

    OCT

  • DEN–SEA, Oct 2, 2026: From $79
    02

    Fr

  • DEN–SEA, Oct 3, 2026: From $79
    03

    Sa

  • DEN–SEA, Oct 4, 2026: From $180
    04

    Su

  • DEN–SEA, Oct 5, 2026: From $159
    05

    Mo

    • Range$79-$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 Denver to Seattle.*

    $
    keyboard_arrow_down
    One-way low-fare flights Denver to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Dec 14, 2026

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 5, 2027

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 19, 2027

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 27, 2027

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 13, 2026

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 23, 2026

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Oct 28, 2026

    From

    $79

    Seen: 16 hours ago

    Denver (DEN)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 26, 2026

    From

    $79

    Seen: 16 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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