American Airlines flights from Portland, OR to London

Recent searches for flights from Portland, OR to London

Aug 2026
From$1,132*
Updated: 13 hours ago
Round tripIEconomy
Sep 2026
From$982*
Updated: 13 hours ago
Round tripIEconomy
Oct 2026
From$982*
Updated: 13 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $996
cmp-daily-histogram-bars-legend-max-price-aria-label $1.5K
Displaying fares for August-2026
  • PDX–LCY, 08/12/26 – 08/19/26: From $1,487
    12

    We

    AUG

  • PDX–LON, 08/13/26 – 08/20/26: From $1,178
    13

    Th

  • PDX–LHR, 08/14/26 – 08/26/26: From $1,192
    14

    Fr

  • PDX–LON, 08/15/26 – 08/22/26: From $1,238
    15

    Sa

  • PDX–LHR, 08/16/26 – 08/23/26: From $1,193
    16

    Su

  • PDX–LHR, 08/17/26 – 08/24/26: From $1,188
    17

    Mo

  • PDX–LON, 08/18/26 – 08/25/26: From $1,138
    18

    Tu

  • PDX–LON, 08/19/26 – 08/26/26: From $1,138
    19

    We

  • PDX–LON, 08/20/26 – 08/27/26: From $1,178
    20

    Th

  • PDX–LON, 08/21/26 – 08/28/26: From $1,182
    21

    Fr

  • PDX–LON, 08/22/26 – 08/29/26: From $1,238
    22

    Sa

  • PDX–LHR, 08/23/26 – 08/30/26: From $1,178
    23

    Su

  • PDX–LON, 08/24/26 – 08/31/26: From $1,188
    24

    Mo

  • PDX–LHR, 08/25/26 – 09/01/26: From $1,138
    25

    Tu

  • PDX–LON, 08/26/26 – 09/02/26: From $1,132
    26

    We

  • PDX–LHR, 08/27/26 – 09/03/26: From $1,178
    27

    Th

  • PDX–LON, 08/28/26 – 09/04/26: From $1,249
    28

    Fr

  • PDX–LON, 08/29/26 – 09/05/26: From $1,309
    29

    Sa

  • PDX–LHR, 08/30/26 – 09/06/26: From $1,249
    30

    Su

  • PDX–LON, 08/31/26 – 09/07/26: From $1,254
    31

    Mo

  • PDX–LHR, 09/01/26 – 09/10/26: From $1,132
    01

    Tu

    SEP

  • PDX–LON, 09/02/26 – 09/09/26: From $1,132
    02

    We

  • PDX–LON, 09/03/26 – 09/10/26: From $1,247
    03

    Th

  • PDX–LON, 09/04/26 – 09/11/26: From $1,355
    04

    Fr

  • PDX–LHR, 09/05/26 – 09/12/26: From $1,243
    05

    Sa

  • PDX–LHR, 09/06/26 – 09/20/26: From $1,192
    06

    Su

  • PDX–LHR, 09/07/26 – 09/14/26: From $1,193
    07

    Mo

  • PDX–LON, 09/08/26 – 09/15/26: From $1,143
    08

    Tu

  • PDX–LHR, 09/09/26 – 09/23/26: From $996
    09

    We

  • PDX–LHR, 09/10/26 – 09/17/26: From $1,047
    10

    Th

  • PDX–LHR, 09/11/26 – 09/18/26: From $1,042
    11

    Fr

    • range$996-$1,487

    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 Portland, OR to London flights

    $
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    Portland, OR (PDX)to

    London (LON)
    11/18/26 - 11/25/26

    Round trip

    Economy

    from
    $902Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $902Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    11/11/26 - 11/18/26

    Round trip

    Economy

    from
    $902Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    12/09/26 - 12/16/26

    Round trip

    Economy

    from
    $917Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    12/01/26 - 12/08/26

    Round trip

    Economy

    from
    $917Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $917Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    11/17/26 - 11/24/26

    Round trip

    Economy

    from
    $917Fare subject to changes
    Updated: 13 hours ago

    Portland, OR (PDX)to

    London (LON)
    12/08/26 - 12/15/26

    Round trip

    Economy

    from
    $917Fare subject to changes
    Updated: 13 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 Portland, OR to London

    Looking for lower fares on your trip from Portland, OR to London? 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 Portland, OR to London