Flights from Seattle (SEA) to Denver (DEN) on Alaska Airlines

Lowest fares from Seattle to Denver

Nov 2026
From$225*
Seen: 19 hours ago
Flight Type One Way|Saver
Dec 2026
From$139*
Seen: 19 hours ago
Flight Type One Way|Saver
Jan 2027
From$139*
Seen: 19 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $139
cmp-daily-histogram-bars-legend-max-price-aria-label $949
Displaying fares for November-2026
  • SEA–DEN, Nov 14, 2026: From $295
    14

    Sa

    NOV

  • SEA–DEN, Nov 15, 2026: From $295
    15

    Su

  • SEA–DEN, Nov 16, 2026: From $295
    16

    Mo

  • SEA–DEN, Nov 17, 2026: From $295
    17

    Tu

  • SEA–DEN, Nov 18, 2026: From $295
    18

    We

  • SEA–DEN, Nov 19, 2026: From $275
    19

    Th

  • SEA–DEN, Nov 20, 2026: From $275
    20

    Fr

  • SEA–DEN, Nov 21, 2026: From $275
    21

    Sa

  • SEA–DEN, Nov 22, 2026: From $275
    22

    Su

  • SEA–DEN, Nov 23, 2026: From $275
    23

    Mo

  • SEA–DEN, Nov 24, 2026: From $305
    24

    Tu

  • SEA–DEN, Nov 25, 2026: From $325
    25

    We

  • SEA–DEN, Nov 26, 2026: From $225
    26

    Th

  • SEA–DEN, Nov 27, 2026: From $225
    27

    Fr

  • SEA–DEN, Nov 28, 2026: From $534
    28

    Sa

  • SEA–DEN, Nov 29, 2026: From $949
    29

    Su

  • SEA–DEN, Nov 30, 2026: From $324
    30

    Mo

  • SEA–DEN, Dec 1, 2026: From $225
    01

    Tu

    DEC

  • SEA–DEN, Dec 2, 2026: From $225
    02

    We

  • SEA–DEN, Dec 3, 2026: From $159
    03

    Th

  • SEA–DEN, Dec 4, 2026: From $159
    04

    Fr

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

    Sa

  • SEA–DEN, Dec 6, 2026: From $159
    06

    Su

  • SEA–DEN, Dec 7, 2026: From $159
    07

    Mo

  • SEA–DEN, Dec 8, 2026: From $159
    08

    Tu

  • SEA–DEN, Dec 9, 2026: From $159
    09

    We

  • SEA–DEN, Dec 10, 2026: From $159
    10

    Th

  • SEA–DEN, Dec 11, 2026: From $159
    11

    Fr

  • SEA–DEN, Dec 12, 2026: From $139
    12

    Sa

  • SEA–DEN, Dec 13, 2026: From $149
    13

    Su

    • Range$139-$949

    *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: Jan 5, 2027

    From

    $139

    Seen: 19 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 12, 2027

    From

    $139

    Seen: 19 hours ago

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

    From

    $139

    Seen: 19 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 20, 2027

    From

    $139

    Seen: 19 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Jan 30, 2027

    From

    $139

    Seen: 19 hours ago

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

    From

    $139

    Seen: 19 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Feb 16, 2027

    From

    $139

    Seen: 19 hours ago

    Seattle (SEA)Denver (DEN)One-way
    |
    Saver    		Depart: Feb 20, 2027

    From

    $139

    Seen: 19 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.

    Frequently Asked Questions on flights from Seattle (SEA) to Denver (DEN)

    When is the best time to book a flight from Seattle to Denver?

    Want to find the lowest fares by day and time flying from Seattle to Denver on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.

    Can I earn points on my flight to Denver?

    Yes, with Atmosâ„¢ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmosâ„¢ Rewards member yet? Learn more and join today.

    Can I rent a car when I arrive at Denver International Airport?

    Yes, you can rent a car at Denver International Airport. Check availability and book now

    Where can I find the status of my flight to Denver?

    You can check the status of your upcoming Alaska Airlines flight on our flight schedule page.

    Where can I find answers to questions about flying with Alaska Airlines?

    Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

    Can I change or cancel my Alaska Airlines flight to Denver?

    Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here. 

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