Cheapest return flights from Philadelphia to London in July from $650

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

18 Jul - 28 Aug Aer Lingus
17 Jul - 28 Jul Iberia
18 Jul - 28 Jul Iberia
14 Jul - 28 Jul Iberia
29 Jul - 07 Aug British Airways
15 Jul - 22 Jul Iberia direct
10 Jul - 23 Jul Iberia direct
03 Jul - 07 Jul Iberia
29 Jul - 07 Aug Iberia direct
16 Jul - 23 Jul Delta
31 Jul - 07 Aug Delta
11 Jul - 18 Jul United
19 Jul - 03 Aug Iberia direct
23 Jul - 27 Jul Iberia direct
22 Jul - 27 Jul Iberia direct
26 Jul - 03 Aug Iberia direct
24 Jul - 02 Aug Iberia direct
26 Jul - 02 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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