Cheapest return flights from Philadelphia to London in May from 767€

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

Return flights

21 May - 26 May Aer Lingus
21 May - 26 May Finnair direct
21 May - 25 May British Airways direct
26 May - 09 Jun Aer Lingus
26 May - 09 Jun British Airways direct
23 May - 06 Jun Aer Lingus
23 May - 06 Jun British Airways direct

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

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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