Cheapest return flights from Boston to London in May from $492

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

Return flights

03 May - 09 May Air Canada
30 May - 13 Jun Icelandair
13 May - 20 May Aer Lingus
04 May - 08 May Aer Lingus
23 May - 13 Jun Icelandair
28 May - 20 Jun Icelandair
25 May - 20 Jun Icelandair
26 May - 31 May Icelandair
19 May - 26 May Icelandair
03 May - 09 May American Airlines direct
13 May - 20 May British Airways direct
04 May - 08 May British Airways direct
21 May - 28 May Icelandair
07 May - 30 May Aer Lingus
30 May - 13 Jun Delta direct
23 May - 13 Jun Iberia direct
25 May - 20 Jun Air France direct
28 May - 20 Jun Virgin Atlantic 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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