AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LHR) in July 2026 (see full year).

Return flights

22 Jul - 05 Aug	Lufthansa
22 Jul - 05 Aug	British Airways	direct
10 Jul - 20 Jul	Lufthansa
10 Jul - 20 Jul	British Airways	direct

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

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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Cheapest return flights from Philadelphia to London in July from 838€

Return flights