American Airlines flights from Washington, D.C. to Seattle

Recent searches for flights from Washington, D.C. to Seattle

Aug 2026
From$305*
Updated: 1 hour ago
Round tripIEconomy
Sep 2026
From$197*
Updated: 7 hours ago
Round tripIEconomy
Oct 2026
From$187*
Updated: 3 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $257
cmp-daily-histogram-bars-legend-max-price-aria-label $997
Displaying fares for August-2026
  • IAD–SEA, 08/03/26 – 08/13/26: From $941
    03

    Mo

    AUG

  • DCA–SEA, 08/04/26 – 08/11/26: From $966
    04

    Tu

  • DCA–SEA, 08/05/26 – 08/12/26: From $997
    05

    We

  • DCA–SEA, 08/06/26 – 08/13/26: From $997
    06

    Th

  • DCA–SEA, 08/07/26 – 08/14/26: From $997
    07

    Fr

  • DCA–SEA, 08/08/26 – 08/15/26: From $983
    08

    Sa

  • DCA–SEA, 08/09/26 – 08/16/26: From $997
    09

    Su

  • DCA–SEA, 08/10/26 – 08/17/26: From $812
    10

    Mo

  • DCA–SEA, 08/11/26 – 08/18/26: From $812
    11

    Tu

  • DCA–SEA, 08/12/26 – 08/19/26: From $812
    12

    We

  • WAS–SEA, 08/13/26 – 08/21/26: From $802
    13

    Th

  • DCA–SEA, 08/14/26 – 08/21/26: From $812
    14

    Fr

  • DCA–SEA, 08/15/26 – 08/22/26: From $862
    15

    Sa

  • DCA–SEA, 08/16/26 – 08/23/26: From $812
    16

    Su

  • DCA–SEA, 08/17/26 – 08/24/26: From $531
    17

    Mo

  • DCA–SEA, 08/18/26 – 08/25/26: From $486
    18

    Tu

  • DCA–SEA, 08/19/26 – 08/26/26: From $466
    19

    We

  • DCA–SEA, 08/20/26 – 08/27/26: From $466
    20

    Th

  • DCA–SEA, 08/21/26 – 08/28/26: From $466
    21

    Fr

  • DCA–SEA, 08/22/26 – 08/29/26: From $466
    22

    Sa

  • DCA–SEA, 08/23/26 – 08/30/26: From $466
    23

    Su

  • DCA–SEA, 08/24/26 – 08/31/26: From $305
    24

    Mo

  • DCA–SEA, 08/25/26 – 09/01/26: From $305
    25

    Tu

  • DCA–SEA, 08/26/26 – 09/02/26: From $305
    26

    We

  • DCA–SEA, 08/27/26 – 09/09/26: From $305
    27

    Th

  • DCA–SEA, 08/28/26 – 09/04/26: From $305
    28

    Fr

  • DCA–SEA, 08/29/26 – 09/05/26: From $305
    29

    Sa

  • DCA–SEA, 08/30/26 – 09/06/26: From $366
    30

    Su

  • WAS–SEA, 08/31/26 – 09/06/26: From $325
    31

    Mo

  • WAS–SEA, 09/01/26 – 09/06/26: From $257
    01

    Tu

    SEP

  • WAS–SEA, 09/02/26 – 09/09/26: From $273
    02

    We

    • range$257-$997

    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 Washington, D.C. to Seattle flights

    $
    keyboard_arrow_down

    Washington, D.C. (WAS)to

    Seattle (SEA)
    10/14/26 - 10/19/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 3 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    09/15/26 - 09/18/26

    Round trip

    Economy

    from
    $197Fare subject to changes
    Updated: 7 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    09/09/26 - 09/12/26

    Round trip

    Economy

    from
    $232Fare subject to changes
    Updated: 9 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    10/15/26 - 10/20/26

    Round trip

    Economy

    from
    $232Fare subject to changes
    Updated: 3 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    09/20/26 - 09/25/26

    Round trip

    Economy

    from
    $247Fare subject to changes
    Updated: 3 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    10/14/26 - 10/18/26

    Round trip

    Economy

    from
    $378Fare subject to changes
    Updated: 3 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    10/13/26 - 10/18/26

    Round trip

    Economy

    from
    $378Fare subject to changes
    Updated: 3 hours ago

    Washington, D.C. (WAS)to

    Seattle (SEA)
    09/01/26 - 09/06/26

    Round trip

    Economy

    from
    $257Fare subject to changes
    Updated: 22 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 Washington, D.C. to Seattle

    Looking for lower fares on your trip from Washington, D.C. to Seattle? 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 Washington, D.C. to Seattle