฿21,940 Cheap American Airlines flights from Philadelphia to London (PHL→LON)

View ฿21,940 flight on Tue, 12 May 2026Opens in a new window

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American Airlines flights from Philadelphia to London (PHL→LON)

Prices were available within the past 7 days and start at ฿21,940 for one-way flights and ฿37,395 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 3 May - Tue, 12 May
PHL
Philadelphia
LHR
London
฿37,395 Return, found 5 days ago
฿37,395
Return
found 5 days ago
Select American Airlines flight, departing Sun, 3 May from Philadelphia to London, returning Tue, 12 May, priced at ฿37,395 found 5 days ago

Find the cheapest month to fly from Philadelphia (PHL) to London (LON)

August is typically the cheapest month to fly

From ฿23,469 - ฿35,988 per traveller.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
Heathrow
Distance
5656 km
*Available to Expedia members.