Cheapest return flights from Philadelphia to London in May from $797

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 May 2024 (see full year).

Return flights

29 May - 05 Jun American Airlines
27 May - 05 Jun Finnair
27 May - 04 Jun American Airlines
28 May - 04 Jun American Airlines
26 May - 04 Jun Finnair
26 May - 10 Jun British Airways
27 May - 03 Jun British Airways
26 May - 11 Jun Finnair
27 May - 05 Jun British Airways direct
27 May - 04 Jun American Airlines direct
23 May - 30 May American Airlines
23 May - 29 May American Airlines
24 May - 31 May Air Canada
24 May - 31 May British Airways direct
23 May - 29 May American Airlines direct
23 May - 30 May American Airlines direct
23 May - 27 May British Airways direct
26 May - 29 May Spirit Airlines
25 May - 29 May jetBlue
24 May - 28 May Iberia direct

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

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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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