Cheapest one-way flights from Philadelphia to London in December from 259€

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

One-Way flights

09 Dec jetBlue
16 Dec Spirit Airlines
29 Dec Frontier Airlines
09 Dec Finnair direct
29 Dec British Airways direct
04 Dec British Airways direct
15 Dec Frontier Airlines
16 Dec British Airways direct
15 Dec British Airways direct
14 Dec British Airways direct

Also check the deals for return flights from Philadelphia to London in December.

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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