$414 Cheap American Airlines flights Philadelphia (PHL) to London (LHR)

Apply the “Price (lowest to highest)” filter on Expedia to look for cheap American Airlines round-trip flights from $549 from PHL to LHR. Affordable one-way options from $414 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for one-way or round-trip flights to London in January or February. You could find cheaper fares with American Airlines during these off-peak months.

To discover affordable flights from PHL to LHR with American Airlines, start your search about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

You can easily fly from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR) on any of American Airlines’s 7 weekly direct flights. Make use of our “Nonstop” and “Airline” filters to find the American Airlines flight that’ll take you to LHR at a time that suits you.

Take off from Philadelphia Intl. Airport (PHL) for Heathrow Airport (LHR) on a direct American Airlines flight, and you’ll be airborne for around 6h 59m.

The first flight from PHL to LHR with American Airlines departs at 9:21PM UTC-5. You’ll touch down at 9:20AM UTC+0. The last American Airlines flight of the day takes off at 9:21PM UTC-5 and arrives at 9:20AM UTC+0. With around 20% fewer cancellations for morning and mid-morning departures, jetting out early is typically the wisest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

American Airlines flights from Philadelphia Intl. Airport (PHL) to London land at Heathrow Airport (LHR). This is the main gateway here.

Take an American Airlines flight from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR), and you’ll probably board a Boeing 787-9. Keep in mind though, that the aircraft type can change due to operational reasons.

Depending on your fare type, a fee generally applies if you cancel or reschedule your flight more than 24 hours after it’s confirmed. To find flexible fares, select our “Changes included” and “No cancel fee” boxes while searching for flights. For more information on changing or canceling your reservation, head to “Trips,” select your flight and tick “Manage Booking.”