Cheapest return flights from Philadelphia to London in July from $569

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

30 Jul - 06 Aug Air France
16 Jul - 22 Jul Delta
15 Jul - 29 Jul KLM
15 Jul - 22 Jul Air France
31 Jul - 08 Aug Delta
31 Jul - 07 Aug Delta
05 Jul - 15 Jul KLM
07 Jul - 14 Jul Delta
16 Jul - 28 Jul Delta
17 Jul - 28 Jul Delta
10 Jul - 21 Jul Air France
05 Jul - 18 Jul jetBlue
06 Jul - 23 Jul Aer Lingus
30 Jul - 06 Aug Iberia direct
17 Jul - 11 Aug Aer Lingus
31 Jul - 07 Aug Iberia direct
31 Jul - 08 Aug Iberia direct
13 Jul - 03 Aug Iberia direct
17 Jul - 11 Aug Iberia direct
28 Jul - 02 Aug Aer Lingus

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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