Cheapest return flights from Philadelphia to London in July from $646

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

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

Return flights

30 Jul - 06 Aug Air Canada
14 Jul - 05 Aug Spirit Airlines
31 Jul - 14 Aug Frontier Airlines
05 Jul - 13 Jul Spirit Airlines
25 Jul - 30 Jul Air Canada
17 Jul - 20 Jul Frontier Airlines
29 Jul - 15 Aug Spirit Airlines
15 Jul - 06 Aug Spirit Airlines
17 Jul - 06 Aug Frontier Airlines
22 Jul - 06 Aug Spirit Airlines
09 Jul - 16 Jul Spirit Airlines
03 Jul - 10 Jul Frontier Airlines
13 Jul - 18 Jul Spirit Airlines
03 Jul - 06 Jul Spirit Airlines
11 Jul - 20 Jul Frontier Airlines
03 Jul - 12 Jul Frontier Airlines
15 Jul - 29 Jul Spirit Airlines

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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