Cheapest return flights from Boston to London in December from $483

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

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

Return flights

28 Dec - 11 Jan Fly Play
10 Dec - 22 Dec Icelandair
16 Dec - 24 Dec Icelandair
13 Dec - 20 Dec Icelandair
12 Dec - 02 Jan Fly Play
23 Dec - 28 Dec Icelandair
24 Dec - 28 Dec TAP
25 Dec - 04 Jan Iberia
26 Dec - 11 Jan Fly Play
26 Dec - 03 Jan Fly Play
19 Dec - 04 Jan Fly Play
17 Dec - 25 Dec TAP

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