Cheapest return flights from Philadelphia to London in July from $597

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

Return flights

15 Jul - 15 Aug British Airways
15 Jul - 15 Aug American Airlines direct
27 Jul - 08 Aug Air Canada
28 Jul - 08 Aug Air Canada
25 Jul - 31 Jul Air Canada
30 Jul - 04 Aug British Airways
27 Jul - 08 Aug British Airways direct
28 Jul - 08 Aug British Airways direct
16 Jul - 06 Aug American Airlines
14 Jul - 22 Jul American Airlines
14 Jul - 21 Jul British Airways
15 Jul - 31 Jul British Airways
16 Jul - 28 Jul British Airways
31 Jul - 04 Aug British Airways
14 Jul - 22 Jul Finnair direct
16 Jul - 06 Aug Finnair direct
19 Jul - 26 Jul British Airways
22 Jul - 27 Jul British Airways direct
17 Jul - 22 Jul British Airways
23 Jul - 26 Jul jetBlue

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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