Cheapest return flights from London to Boston in December from 356€

Best time to book flights for London (LON) to Boston (BOS) flights at AirHint

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

Return flights

04 Dec - 09 Dec Fly Play
04 Dec - 08 Dec Fly Play
04 Dec - 07 Dec Fly Play
04 Dec - 11 Dec Fly Play
05 Dec - 11 Dec Fly Play
06 Dec - 13 Dec Fly Play
03 Dec - 30 Dec Fly Play
27 Dec - 06 Jan Fly Play
26 Dec - 05 Jan Fly Play
01 Dec - 30 Dec Fly Play
22 Dec - 02 Jan Fly Play
23 Dec - 02 Jan Fly Play
26 Dec - 01 Jan Fly Play
26 Dec - 02 Jan Fly Play
23 Dec - 30 Dec Fly Play
10 Dec - 17 Dec Fly Play
22 Dec - 03 Jan Fly Play
28 Dec - 04 Jan Fly Play
25 Dec - 02 Jan TAP
26 Dec - 05 Jan Finnair direct

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

Skyscanner

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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