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

One-Way flights

11 Dec	jetBlue
04 Dec	jetBlue
02 Dec	jetBlue
08 Dec	Virgin Atlantic	direct
02 Dec	Virgin Atlantic	direct
11 Dec	Virgin Atlantic	direct
04 Dec	Virgin Atlantic	direct
30 Dec	Aer Lingus
10 Dec	Air France	direct
30 Dec	jetBlue	direct

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

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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Cheapest one-way flights from Boston to London in December from 169€

One-Way flights