Cheapest return flights from Philadelphia to London in July from $801

Best time to book flights for Philadelphia (PHL) to London (LHR) flights at AirHint

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

Return flights

14 Jul - 22 Jul Finnair
15 Jul - 21 Jul Finnair
31 Jul - 08 Aug British Airways
17 Jul - 22 Jul Finnair
09 Jul - 14 Jul British Airways
17 Jul - 25 Jul British Airways
04 Jul - 21 Jul British Airways
31 Jul - 08 Aug Iberia direct
17 Jul - 22 Jul Iberia direct
03 Jul - 09 Jul British Airways
14 Jul - 22 Jul British Airways direct
03 Jul - 07 Jul British Airways
29 Jul - 05 Aug United
19 Jul - 03 Aug Iberia direct
23 Jul - 02 Aug Iberia direct
28 Jul - 04 Aug Delta

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

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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