Cheapest one-way flights from Philadelphia to London in December from $382

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

One-Way flights

01 Dec Frontier Airlines
01 Dec British Airways direct
28 Dec Air Canada
05 Dec British Airways direct
15 Dec British Airways direct
13 Dec Air Canada
13 Dec Iberia direct
28 Dec British Airways direct
21 Dec Air Canada
25 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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