Cheapest return flights from Boston to London in May from $469

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

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

Return flights

06 May - 13 May Fly Play
03 May - 07 May Fly Play
13 May - 22 May Fly Play
03 May - 08 May Fly Play
09 May - 12 May Fly Play
01 May - 14 May Icelandair
04 May - 21 May Icelandair
02 May - 10 May Icelandair
01 May - 08 May Icelandair
08 May - 12 May Fly Play
17 May - 04 Jun Icelandair
06 May - 10 Jun Icelandair
13 May - 19 Jun Icelandair
18 May - 15 Jun Icelandair
18 May - 04 Jun Icelandair
15 May - 15 Jun Icelandair
26 May - 05 Jun Fly Play
20 May - 05 Jun Icelandair
17 May - 01 Jun British Airways direct
17 May - 04 Jun British Airways direct

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

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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