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

Return flights

11 Dec - 13 Dec	Ryanair
01 Dec - 08 Dec	Ryanair
06 Dec - 07 Dec	Ryanair
08 Dec - 13 Dec	Ryanair
16 Dec - 22 Dec	Ryanair
01 Dec - 07 Dec	Ryanair
01 Dec - 05 Dec	Ryanair
15 Dec - 18 Dec	Ryanair
03 Dec - 11 Dec	Ryanair
03 Dec - 14 Jan	Ryanair
12 Dec - 11 Jan	Ryanair
05 Dec - 12 Dec	Ryanair
15 Dec - 01 Jan	Ryanair
28 Dec - 04 Jan	Ryanair
01 Dec - 14 Jan	Ryanair
02 Dec - 14 Jan	Ryanair
04 Dec - 14 Jan	Ryanair
06 Dec - 14 Jan	Ryanair
20 Dec - 04 Jan	Ryanair
20 Dec - 03 Jan	Ryanair

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

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 December from 352€

Return flights