American Airlines flights from Seattle to Denver

Recent searches for flights from Seattle to Denver

Jul 2026
From$549*
Updated: 18 hours ago
Round tripIEconomy
Aug 2026
From$247*
Updated: 8 hours ago
Round tripIEconomy
Sep 2026
From$282*
Updated: 8 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $247
cmp-daily-histogram-bars-legend-max-price-aria-label $668
Displaying fares for July-2026
  • SEA–DEN, 07/31/26 – 08/07/26: From $549
    31

    Fr

    JUL

  • SEA–DEN, 08/01/26 – 08/08/26: From $549
    01

    Sa

  • SEA–DEN, 08/02/26 – 08/09/26: From $639
    02

    Su

  • SEA–DEN, 08/03/26 – 08/10/26: From $668
    03

    Mo

  • SEA–DEN, 08/04/26 – 08/11/26: From $549
    04

    Tu

  • SEA–DEN, 08/05/26 – 08/12/26: From $549
    05

    We

  • SEA–DEN, 08/06/26 – 08/13/26: From $448
    06

    Th

  • SEA–DEN, 08/07/26 – 08/14/26: From $439
    07

    Fr

  • SEA–DEN, 08/08/26 – 08/15/26: From $513
    08

    Sa

  • SEA–DEN, 08/09/26 – 08/16/26: From $582
    09

    Su

  • SEA–DEN, 08/10/26 – 08/17/26: From $439
    10

    Mo

  • SEA–DEN, 08/11/26 – 08/18/26: From $403
    11

    Tu

  • SEA–DEN, 08/12/26 – 08/19/26: From $439
    12

    We

  • SEA–DEN, 08/13/26 – 08/20/26: From $433
    13

    Th

  • SEA–DEN, 08/14/26 – 08/21/26: From $504
    14

    Fr

  • SEA–DEN, 08/15/26 – 08/22/26: From $486
    15

    Sa

  • SEA–DEN, 08/16/26 – 08/23/26: From $512
    16

    Su

  • SEA–DEN, 08/17/26 – 08/24/26: From $422
    17

    Mo

  • SEA–DEN, 08/18/26 – 08/25/26: From $336
    18

    Tu

  • SEA–DEN, 08/19/26 – 08/26/26: From $336
    19

    We

  • SEA–DEN, 08/20/26 – 08/27/26: From $355
    20

    Th

  • SEA–DEN, 08/21/26 – 08/28/26: From $387
    21

    Fr

  • SEA–DEN, 08/22/26 – 08/29/26: From $424
    22

    Sa

  • SEA–DEN, 08/23/26 – 08/30/26: From $492
    23

    Su

  • SEA–DEN, 08/24/26 – 08/31/26: From $346
    24

    Mo

  • SEA–DEN, 08/25/26 – 09/01/26: From $247
    25

    Tu

  • SEA–DEN, 08/26/26 – 09/02/26: From $252
    26

    We

  • SEA–DEN, 08/27/26 – 09/03/26: From $486
    27

    Th

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    28

    Fr

  • SEA–DEN: cmp-view-offers-disclaimer. Find Offers
    29

    Sa

  • SEA–DEN, 08/30/26 – 09/06/26: From $508
    30

    Su

    • range$247-$668

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Seattle to Denver flights

    $
    keyboard_arrow_down

    Seattle (SEA)to

    Denver (DEN)
    08/25/26 - 09/01/26

    Round trip

    Economy

    from
    $247Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    08/26/26 - 09/02/26

    Round trip

    Economy

    from
    $252Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    09/01/26 - 09/08/26

    Round trip

    Economy

    from
    $282Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $287Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $287Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    10/07/26 - 10/14/26

    Round trip

    Economy

    from
    $287Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $287Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Denver (DEN)
    09/02/26 - 09/09/26

    Round trip

    Economy

    from
    $287Fare subject to changes
    Updated: 8 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    Finding cheap flights from Seattle to Denver

    Looking for lower fares on your trip from Seattle to Denver? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Seattle to Denver