Cheapest return flights from Boston to London in May from $442

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

01 May - 15 May TAP
03 May - 12 May TAP
02 May - 11 May TAP
01 May - 30 May TAP
12 May - 21 May TAP
07 May - 17 May Icelandair
07 May - 22 May Fly Play
08 May - 17 May Icelandair
10 May - 18 May Icelandair
02 May - 30 May Icelandair
27 May - 02 Jun Austrian Airlines
28 May - 04 Jun TAP
31 May - 14 Jun Icelandair
28 May - 04 Jun Air France direct
27 May - 02 Jun Air France direct
31 May - 14 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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