Cheapest return flights from London to Boston in December from 367€

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

Return flights

06 Dec - 08 Dec Scandinavian Airlines
03 Dec - 07 Dec Scandinavian Airlines
08 Dec - 12 Dec Scandinavian Airlines
02 Dec - 05 Dec Scandinavian Airlines
05 Dec - 12 Dec Scandinavian Airlines
07 Dec - 12 Dec Scandinavian Airlines
03 Dec - 06 Dec Scandinavian Airlines
03 Dec - 10 Dec TAP
06 Dec - 11 Dec TAP
03 Dec - 15 Jan Scandinavian Airlines
03 Dec - 08 Dec Scandinavian Airlines
14 Dec - 10 Jan TAP
02 Dec - 21 Jan SWISS
25 Dec - 09 Jan Air Canada
25 Dec - 10 Jan Air Canada
30 Dec - 06 Jan Virgin Atlantic
12 Dec - 05 Jan TAP
16 Dec - 08 Jan TAP
16 Dec - 05 Jan Icelandair
17 Dec - 06 Jan TAP

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

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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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