Cheapest return flights from Philadelphia to London in December from 964€

AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LHR) in December 2025 (see full year).

Return flights

29 Dec - 11 Jan Frontier Airlines
30 Dec - 06 Jan jetBlue
28 Dec - 06 Jan Frontier Airlines
28 Dec - 10 Jan Frontier Airlines
29 Dec - 04 Jan Frontier Airlines
30 Dec - 06 Jan British Airways direct
29 Dec - 11 Jan British Airways direct
28 Dec - 06 Jan British Airways direct
28 Dec - 10 Jan Finnair direct
28 Dec - 03 Jan Icelandair

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

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