Cheapest return flights from Boston to London in May from 383€

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

Return flights

05 May - 25 May TAP
12 May - 19 May TAP
05 May - 11 May TAP
02 May - 09 May Lufthansa
12 May - 20 May Aer Lingus
08 May - 22 May Aer Lingus
11 May - 20 May Aer Lingus
10 May - 16 May Aer Lingus
12 May - 19 May jetBlue direct
07 May - 30 May Aer Lingus
21 May - 02 Jun Lufthansa
12 May - 06 Jun British Airways direct
28 May - 07 Jun Air Canada
16 May - 06 Jun British Airways direct
15 May - 06 Jun British Airways direct
20 May - 13 Jun British Airways direct
26 May - 20 Jun Air Canada
22 May - 13 Jun Air Canada
30 May - 20 Jun Air Canada
23 May - 13 Jun Air Canada

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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