American Airlines flights from Philadelphia to London

Recent searches for flights from Philadelphia to London

Sep 2026
From$988*
Updated: 23 hours ago
Round tripIEconomy
Oct 2026
From$822*
Updated: 44 minutes ago
Round tripIEconomy
Nov 2026
From$906*
Updated: 4 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $988
cmp-daily-histogram-bars-legend-max-price-aria-label $1.3K
Displaying fares for September-2026
  • PHL–LHR, 09/01/26 – 09/06/26: From $1,190
    01

    Tu

    SEP

  • PHL–LON, 09/02/26 – 09/06/26: From $1,190
    02

    We

  • PHL–LHR, 09/03/26 – 09/16/26: From $1,189
    03

    Th

  • PHL–LHR, 09/04/26 – 09/11/26: From $1,216
    04

    Fr

  • PHL–LHR, 09/05/26 – 09/26/26: From $1,216
    05

    Sa

  • PHL–LON, 09/06/26 – 09/13/26: From $1,221
    06

    Su

  • PHL–LHR, 09/07/26 – 09/16/26: From $1,136
    07

    Mo

  • PHL–LHR, 09/08/26 – 09/16/26: From $1,134
    08

    Tu

  • PHL–LHR, 09/09/26 – 09/15/26: From $1,139
    09

    We

  • PHL–LON, 09/10/26 – 09/17/26: From $1,189
    10

    Th

  • PHL–LON, 09/11/26 – 09/18/26: From $1,203
    11

    Fr

  • PHL–LHR, 09/12/26 – 09/19/26: From $1,236
    12

    Sa

  • PHL–LHR, 09/13/26 – 10/06/26: From $1,134
    13

    Su

  • PHL–LHR, 09/14/26 – 09/21/26: From $1,211
    14

    Mo

  • PHL–LHR, 09/15/26 – 09/22/26: From $1,153
    15

    Tu

  • PHL–LHR, 09/16/26 – 09/24/26: From $1,134
    16

    We

  • PHL–LHR, 09/17/26 – 09/24/26: From $1,186
    17

    Th

  • PHL–LHR, 09/18/26 – 10/30/26: From $1,185
    18

    Fr

  • PHL–LHR, 09/19/26 – 09/26/26: From $1,260
    19

    Sa

  • PHL–LHR, 09/20/26 – 09/30/26: From $1,134
    20

    Su

  • PHL–LHR, 09/21/26 – 09/30/26: From $1,136
    21

    Mo

  • PHL–LON, 09/22/26 – 10/06/26: From $1,136
    22

    Tu

  • PHL–LHR, 09/23/26 – 09/30/26: From $1,136
    23

    We

  • PHL–LHR, 09/24/26 – 10/07/26: From $1,184
    24

    Th

  • PHL–LHR, 09/25/26 – 09/30/26: From $1,186
    25

    Fr

  • PHL–LHR, 09/26/26 – 10/03/26: From $1,239
    26

    Sa

  • PHL–LHR, 09/27/26 – 10/04/26: From $1,211
    27

    Su

  • PHL–LHR, 09/28/26 – 10/05/26: From $1,211
    28

    Mo

  • PHL–LHR, 09/29/26 – 10/06/26: From $993
    29

    Tu

  • PHL–LHR, 09/30/26 – 10/15/26: From $988
    30

    We

    • range$988-$1,260

    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 Philadelphia to London flights

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    Philadelphia (PHL)to

    London (LON)
    10/19/26 - 10/28/26

    Round trip

    Economy

    from
    $822Fare subject to changes
    Updated: 44 minutes ago

    Philadelphia (PHL)to

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

    Round trip

    Economy

    from
    $906Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

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

    Round trip

    Economy

    from
    $906Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

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

    Round trip

    Economy

    from
    $908Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

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

    Round trip

    Economy

    from
    $908Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

    London (LON)
    12/16/26 - 12/23/26

    Round trip

    Economy

    from
    $948Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

    London (LON)
    12/15/26 - 12/22/26

    Round trip

    Economy

    from
    $951Fare subject to changes
    Updated: 1 hour ago

    Philadelphia (PHL)to

    London (LON)
    12/11/26 - 12/18/26

    Round trip

    Economy

    from
    $956Fare subject to changes
    Updated: 1 hour 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 Philadelphia to London

    Looking for lower fares on your trip from Philadelphia 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 Philadelphia to London