Cheapest return flights from Boston to London in May from 413€

AirHint found the following cheapest return flights from Boston (BOS) to London (LHR) in May 2026 (see full year).

Return flights

12 May - 19 May Air Canada
04 May - 08 May Lufthansa
20 May - 04 Jun Icelandair
24 May - 07 Jun Icelandair
03 May - 09 May Aer Lingus
04 May - 08 May jetBlue direct
12 May - 19 May jetBlue direct
03 May - 09 May British Airways direct
20 May - 25 May Air Canada
21 May - 26 May Icelandair
04 May - 30 May Air France
07 May - 30 May Aer Lingus
16 May - 06 Jun Icelandair
23 May - 13 Jun Icelandair
24 May - 07 Jun jetBlue direct
28 May - 20 Jun Icelandair
20 May - 04 Jun Finnair direct
16 May - 06 Jun British Airways direct
23 May - 13 Jun Iberia direct
25 May - 20 Jun Air France direct

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

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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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