Skip to main content
Beginning of main content

Cheap Flights from Philadelphia to London $524.42

Search over 282,000 hotels worldwide and 400 airlines worldwide.
Secure incredible value with Expedia’s Price Guarantee
No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheapest Flights from Philadelphia to London (PHL to LGW)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Philadelphia to London (PHL to LGW)

Question : What day in the next four weeks has the best fares?
Answer : December 15th offers bookings (as of November 28th) that are 33% below the average price for this route. Saving on flight costs means you'll have more money in hand for the trip.

Question : How long are most people's visits to London when they fly in from Philadelphia?
Answer : Passengers from PHL to LGW stay nine days on average.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : For the month of December, the cheapest day to fly is Saturday. Flexibility is paramount when booking travel plans in order to keep costs down.

Question : Who's offering the cheapest round-trip flight to London Gatwick Airport (LGW) over the coming months?
Answer : has been booking passengers at the cheapest fare for flights scheduled throughout the next three months.