$478 Cheap British Airways flights Philadelphia (PHL) to London (LHR)

Make use of the “Price (lowest to highest)” filter on Expedia to look for cheap British Airways round-trip flights from $733 from PHL to LHR. Affordable one-way fares from $478 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.

British Airways flights to London are typically cheaper in the low-season months of January and February. Whether you’re after a round-trip or one-way ticket, you could score a better deal then.

To discover cheap flights from PHL to LHR with British Airways, begin your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. 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.

Book a seat on one of British Airways’s 7 weekly direct flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR). To see your options, enter your origin, dates and destination and hit search. Then select the “Nonstop” and “Airline” filters.

Take off from Philadelphia Intl. Airport (PHL) for Heathrow Airport (LHR) on a direct British Airways flight, and you’ll be in the air for around 6h 55m.

Departing PHL at 6:40PM UTC-5, the earliest British Airways flight to LHR lands at 6:35AM UTC+0. Traveling earlier in the day means you’re less likely to encounter delays or cancellations.* Not an early riser? The last British Airways flight from PHL to LHR departs at 6:40PM UTC-5 and touches down at 6:35AM UTC+0.*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.

Board a British Airways flight from Philadelphia Intl. Airport (PHL) to London, and you’ll likely come in to Heathrow Airport (LHR). This is the airline’s primary hub in this destination.

On a standard economy flight with British Airways from PHL to LHR, you can bring 1 checked-in bag up to 50 lb with dimensions no larger than 29 inches x 15 inches x 16 inches in total. For hand luggage, you can have 2 cabin bags weighing up to 50 lb and measuring less than 19 inches x 9 inches x 17 inches. Weight and size restrictions can vary based on your cabin class and airfare type. To make sure you don’t get caught with additional charges at the airport, double-check your British Airways booking or go to the airline’s website before you begin packing.

British Airways makes traveling from PHL to LHR enjoyable with an excellent in-flight experience and top-tier customer service. You may even earn points with British Airways Executive Club. Remember to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

British Airways generally operates Airbus A350-1000 planes for flights from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR). Keep in mind that aircraft type can differ depending on operational requirements, so the plane you board might be different on the day.

Depending on the type of ticket you purchased, a fee will generally apply if you modify or cancel your flight more than 24 hours after it’s confirmed. To find plane tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you search for flights. To learn more about canceling or changing your reservation, head to “Trips,” select your flight and click on “Manage Booking.”