American Airlines flights from Seattle to London

Recent searches for flights from Seattle to London

May 2026
From$1,330*
Updated: 7 hours ago
Round tripIEconomy
Jun 2026
From$1,242*
Updated: 6 hours ago
Round tripIEconomy
Jul 2026
From$1,003*
Updated: 21 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $1.2K
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    • range$1,242-$3,272

    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 London flights

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    Seattle (SEA)to

    London (LON)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $933Fare subject to changes
    Updated: 4 hours ago

    Seattle (SEA)to

    London (LON)
    08/16/26 - 08/27/26

    Round trip

    Economy

    from
    $943Fare subject to changes
    Updated: 7 hours ago

    Seattle (SEA)to

    London (LON)
    10/07/26 - 10/13/26

    Round trip

    Economy

    from
    $982Fare subject to changes
    Updated: 4 hours ago

    Seattle (SEA)to

    London (LON)
    10/08/26 - 10/13/26

    Round trip

    Economy

    from
    $1,032Fare subject to changes
    Updated: 4 hours ago

    Seattle (SEA)to

    London (LON)
    06/24/26 - 07/09/26

    Round trip

    Economy

    from
    $1,244Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    London (LON)
    06/25/26 - 07/09/26

    Round trip

    Economy

    from
    $1,314Fare subject to changes
    Updated: 8 hours ago

    Seattle (SEA)to

    London (LON)
    06/24/26 - 07/12/26

    Round trip

    Economy

    from
    $1,314Fare subject to changes
    Updated: 5 hours ago

    Seattle (SEA)to

    London (LON)
    06/25/26 - 07/12/26

    Round trip

    Economy

    from
    $1,384Fare subject to changes
    Updated: 5 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.

    American Airlines flights from Seattle to London

    Earn up to $200 back on your next American Airlines flight plus, 40,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.