Cheapest return flights from London to Boston in December from 453€

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

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

Return flights

04 Dec - 07 Dec easyJet
05 Dec - 11 Dec easyJet
04 Dec - 08 Dec Icelandair
18 Dec - 22 Dec Icelandair
01 Dec - 30 Dec Icelandair
17 Dec - 27 Dec Icelandair
20 Dec - 27 Dec Icelandair
17 Dec - 31 Dec TAP
17 Dec - 29 Dec TAP
19 Dec - 28 Dec Icelandair
26 Dec - 01 Jan TAP
26 Dec - 05 Jan TAP
19 Dec - 02 Jan TAP
19 Dec - 04 Jan TAP
28 Dec - 01 Jan TAP
26 Dec - 02 Jan TAP
27 Dec - 06 Jan TAP
25 Dec - 02 Jan TAP
22 Dec - 03 Jan Icelandair

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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