Cheapest return flights from Philadelphia to London in May from 650€

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

Return flights

19 May - 02 Jun jetBlue
08 May - 15 May Frontier Airlines
21 May - 25 May jetBlue
24 May - 31 May Aer Lingus
03 May - 09 May Frontier Airlines
23 May - 31 May jetBlue
09 May - 17 May Lufthansa
03 May - 05 May Frontier Airlines
12 May - 16 May Aer Lingus
07 May - 10 May Austrian Airlines
08 May - 25 May Frontier Airlines

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

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