Cheapest return flights from Philadelphia to London in August from $480

AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LHR) in August 2025 (see full year).

Return flights

27 Aug - 02 Sep Air Canada
05 Aug - 21 Aug Aer Lingus
20 Aug - 26 Aug American Airlines
05 Aug - 12 Aug American Airlines
06 Aug - 19 Aug British Airways
12 Aug - 19 Aug British Airways
03 Aug - 12 Aug Finnair direct
17 Aug - 27 Aug Finnair direct
20 Aug - 26 Aug Finnair direct
05 Aug - 21 Aug American Airlines direct
05 Aug - 12 Aug Finnair direct
26 Aug - 01 Sep Aer Lingus
27 Aug - 01 Sep British Airways
26 Aug - 01 Sep Finnair direct
31 Aug - 12 Sep Air Canada
08 Aug - 11 Sep British Airways
07 Aug - 11 Sep British Airways
27 Aug - 02 Sep Finnair direct
28 Aug - 02 Sep American Airlines
28 Aug - 04 Sep British Airways

Also check the deals for one-way flights from Philadelphia to London in August.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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