Cheapest return flights from London to Boston in January from $445

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

Return flights

12 Jan - 19 Jan Aer Lingus
14 Jan - 22 Jan Aer Lingus
20 Jan - 27 Jan Aer Lingus
22 Jan - 29 Jan SWISS
17 Jan - 24 Jan SWISS
24 Jan - 31 Jan SWISS
14 Jan - 18 Jan Scandinavian Airlines
05 Jan - 12 Jan Air Canada
02 Jan - 12 Jan Air Canada
02 Jan - 23 Jan Air Canada

Also check the deals for one-way flights from London to Boston in January.

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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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