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

Return flights

13 Jan - 20 Jan	Air Canada
23 Jan - 30 Jan	Air Canada
20 Jan - 27 Jan	Air Canada
15 Jan - 22 Jan	Air Canada
29 Jan - 03 Feb	Air Canada
12 Jan - 26 Jan	Air Canada
06 Jan - 13 Jan	Air Canada
19 Jan - 26 Jan	Air Canada
22 Jan - 04 Feb	Air Canada
25 Jan - 01 Feb	Air Canada
07 Jan - 13 Jan	Scandinavian Airlines
07 Jan - 12 Jan	Scandinavian Airlines
06 Jan - 11 Jan	Scandinavian Airlines
29 Jan - 03 Feb	British Airways	direct

Also check the deals for one-way flights from London to Boston 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 return flights from London to Boston in January from 354€

Return flights