Cheapest return flights from Philadelphia to London in May from $686

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

Return flights

07 May - 14 May jetBlue
04 May - 19 May Iberia
02 May - 23 May jetBlue
07 May - 14 May British Airways direct
22 May - 30 May jetBlue
22 May - 05 Jun jetBlue
02 May - 23 May British Airways direct
21 May - 29 May British Airways direct
22 May - 05 Jun Iberia direct
22 May - 30 May Iberia direct

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

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