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

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

Aug 2026
From$457*
Updated: 23 hours ago
Round tripIEconomy
Sep 2026
From$388*
Updated: 19 hours ago
Round tripIEconomy
Oct 2026
From$397*
Updated: 8 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $397
cmp-daily-histogram-bars-legend-max-price-aria-label $792
Displaying fares for August-2026
  • SEA–WAS, 08/20/26 – 08/27/26: From $457
    20

    Th

    AUG

  • SEA–WAS, 08/21/26 – 08/28/26: From $613
    21

    Fr

  • SEA–WAS, 08/22/26 – 08/29/26: From $708
    22

    Sa

  • SEA–WAS, 08/23/26 – 08/30/26: From $792
    23

    Su

  • SEA–WAS, 08/24/26 – 08/31/26: From $708
    24

    Mo

  • SEA–WAS, 08/25/26 – 09/01/26: From $457
    25

    Tu

  • SEA–WAS, 08/26/26 – 09/02/26: From $604
    26

    We

  • SEA–WAS, 08/27/26 – 08/31/26: From $457
    27

    Th

  • SEA–WAS, 08/28/26 – 09/04/26: From $590
    28

    Fr

  • SEA–WAS, 08/29/26 – 09/05/26: From $521
    29

    Sa

  • SEA–WAS, 08/30/26 – 09/04/26: From $613
    30

    Su

  • SEA–WAS, 08/31/26 – 09/07/26: From $597
    31

    Mo

  • SEA–WAS, 09/01/26 – 09/08/26: From $521
    01

    Tu

    SEP

  • SEA–WAS, 09/02/26 – 09/09/26: From $521
    02

    We

  • SEA–WAS, 09/03/26 – 09/10/26: From $457
    03

    Th

  • SEA–DCA, 09/04/26 – 09/11/26: From $532
    04

    Fr

  • SEA–WAS, 09/05/26 – 09/12/26: From $457
    05

    Sa

  • SEA–WAS, 09/06/26 – 09/13/26: From $525
    06

    Su

  • SEA–WAS, 09/07/26 – 09/14/26: From $662
    07

    Mo

  • SEA–WAS, 09/08/26 – 09/15/26: From $479
    08

    Tu

  • SEA–IAD, 09/09/26 – 09/15/26: From $408
    09

    We

  • SEA–DCA, 09/10/26 – 09/17/26: From $437
    10

    Th

  • SEA–DCA, 09/11/26 – 09/18/26: From $437
    11

    Fr

  • SEA–WAS, 09/12/26 – 09/19/26: From $417
    12

    Sa

  • SEA–WAS, 09/13/26 – 09/20/26: From $417
    13

    Su

  • SEA–WAS, 09/14/26 – 09/21/26: From $417
    14

    Mo

  • SEA–IAD, 09/15/26 – 09/22/26: From $417
    15

    Tu

  • SEA–DCA, 09/16/26 – 09/23/26: From $417
    16

    We

  • SEA–DCA, 09/17/26 – 09/20/26: From $417
    17

    Th

  • SEA–WAS: cmp-view-offers-disclaimer. Find Offers
    18

    Fr

  • SEA–WAS, 09/19/26 – 09/26/26: From $397
    19

    Sa

    • range$397-$792

    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 Washington, D.C. flights

    $
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    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/10/26 - 10/17/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/22/26 - 10/29/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    10/29/26 - 11/05/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    Washington, D.C. (WAS)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $397Fare subject to changes
    Updated: 23 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 Washington, D.C.

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