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

Return flights

29 Aug - 06 Sep	Fly Play
27 Aug - 10 Sep	Fly Play
20 Aug - 25 Aug	Ryanair
27 Aug - 31 Aug	Ryanair
27 Aug - 03 Sep	Fly Play
20 Aug - 29 Aug	Ryanair
12 Aug - 22 Aug	Ryanair
27 Aug - 05 Sep	Fly Play
20 Aug - 27 Aug	Ryanair
31 Aug - 08 Sep	Fly Play
31 Aug - 07 Sep	Ryanair
30 Aug - 13 Sep	Ryanair
25 Aug - 05 Sep	Fly Play
25 Aug - 01 Sep	Fly Play
16 Aug - 18 Aug	Ryanair
25 Aug - 08 Sep	Fly Play
25 Aug - 27 Aug	Fly Play
25 Aug - 29 Aug	Fly Play
06 Aug - 13 Aug	Ryanair
06 Aug - 11 Aug	Ryanair

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

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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Cheapest return flights from London to Boston in August from 375€

Return flights