Flight Routes from Philadelphia to London Heathrow

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Our cheapest offers for flights from Philadelphia to London Heathrow

Here you can compare cheap flights from Philadelphia (PHL) to London Heathrow (LHR) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to London Heathrow. Prices and availability may change at any time.

Flight schedule from Philadelphia (PHL) to London Heathrow (LHR)

Select a travel date in the flight schedule for the route from Philadelphia (PHL) to London Heathrow (LHR) and compare affordable flight deals.

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Matching outbound flights5 of 5
fromto
dep.arr.
durationstopovers
  1. August 9 – 15, 2026
  2. August 16 – 22, 2026
  3. August 23 – 29, 2026
    1. PHLLHR
      1 stopover
      1. JetBlue Airways
    2. PHLLHR
      1 stopover
      1. Air Canada
    3. PHLLHR
      nonstop
      1. British Airways
    4. PHLLHR
      nonstop
      1. American Airlines
    5. PHLLHR
      nonstop
      1. American Airlines

      Tips and tricks to help you find cheap flights from Philadelphia to London Heathrow

      Favorite airline: Aer Lingus
      Flight tickets on the route Philadelphia – London Heathrow are most frequently booked with Aer Lingus.
      Aer Lingus
      26 %
      United Airlines
      25 %
      British Airways
      16 %
      Direct flights are cheaper
      Direct flights on this route are $21.00 cheaper on average than flights with a stopover.
      non stop flight
      1 stop
      2 stops
      07h 05min
      29h 10min
      31h 12min
      578 $US
      599 $US
      602 $US
      Favourite connection: via Dublin
      When booking flights from Philadelphia to London Heathrow 35 % of travelers prefer to fly via Dublin.
      Route
      bookings
      1 stopover Dublin
      10h 35min, from 719 $US
      35 %
      1 stopover Montréal-Pierre Elliott Trudeau International Airport
      09h 50min, from 678 $US
      25 %
      Direct flights
      07h 05min, from 578 $US
      20 %

      Important flight information

      Flight information: Philadelphia - London Heathrow

      Roundtrip from 976,00 $US
      Flight duration min. 07:00 / max. 07:25
      Return flight duration min. 08:10/ max. 08:45
      Distance 5696 km
      Flights per week 24
      Departure airport Airport Philadelphia International Airport, PA (PHL)
      Arrival airport Airport London Heathrow (LHR)
      Destination country Flights to United Kingdom
      Departure airport - Destination country Philadelphia International Airport, PA - United Kingdom
      Departure airport - City-Code Philadelphia International Airport, PA - London
      Alternative routes to United Kingdom
      Alternative flights to London Heathrow
      Flight destinations with a similar price
      Flight destinations with a similar price