Cheapest return flights from London to Boston in May from $389

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

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

Return flights

06 May - 12 May Fly Play
07 May - 12 May Fly Play
07 May - 13 May Fly Play
06 May - 11 May Fly Play
06 May - 13 May Fly Play
07 May - 09 May Fly Play
07 May - 21 May Fly Play
07 May - 17 May Fly Play
14 May - 21 May Fly Play
06 May - 18 May Fly Play
28 May - 29 Jun Fly Play
13 May - 10 Jun Fly Play
28 May - 04 Jun Fly Play
17 May - 01 Jun Fly Play
20 May - 01 Jun Fly Play
29 May - 01 Jun Fly Play
28 May - 01 Jun Fly Play
29 May - 02 Jun Fly Play
28 May - 02 Jun Fly Play
31 May - 14 Jun Fly Play

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