Cheapest return flights from London to Boston in December from $455

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 - 11 Dec easyJet
12 Dec - 15 Dec easyJet
05 Dec - 07 Dec Icelandair
08 Dec - 14 Dec Icelandair
04 Dec - 07 Dec Icelandair
17 Dec - 23 Dec Icelandair
16 Dec - 23 Dec Icelandair
19 Dec - 09 Jan easyJet
22 Dec - 28 Dec easyJet
23 Dec - 29 Dec easyJet
09 Dec - 09 Dec easyJet
08 Dec - 03 Jan Icelandair
19 Dec - 04 Jan easyJet
20 Dec - 06 Jan Icelandair
26 Dec - 04 Jan easyJet
28 Dec - 01 Jan Vueling Airlines
26 Dec - 01 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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