AirHint found the following cheapest one-way flights from Boston (BOS) to London (LHR) in January 2026 (see full year).

One-Way flights

17 Jan	Iberia
15 Jan	Iberia
03 Jan	Air Canada
08 Jan	American Airlines	direct
16 Jan	Air Canada
01 Jan	United
15 Jan	Air France	direct
16 Jan	Air France	direct
01 Jan	Air France	direct
17 Jan	Air France	direct

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

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 January from $202

One-Way flights