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

Return flights

29 Aug - 13 Sep	Fly Play
29 Aug - 06 Sep	Fly Play
27 Aug - 03 Sep	Ryanair
31 Aug - 10 Sep	Fly Play
27 Aug - 31 Aug	Ryanair
31 Aug - 08 Sep	Fly Play
26 Aug - 08 Sep	Ryanair
28 Aug - 01 Sep	Ryanair
25 Aug - 08 Sep	Fly Play
24 Aug - 06 Sep	Fly Play
25 Aug - 31 Aug	Fly Play
25 Aug - 01 Sep	Fly Play
25 Aug - 25 Aug	Fly Play
25 Aug - 29 Aug	Fly Play
18 Aug - 31 Aug	Fly Play
20 Aug - 31 Aug	Fly Play
13 Aug - 17 Aug	Fly Play
15 Aug - 17 Aug	Fly Play
18 Aug - 25 Aug	Fly Play
13 Aug - 27 Aug	Fly Play

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.

Book a cheap hotel in Boston

Cheap car rent in Boston

Cheapest return flights from London to Boston in August from $451

Return flights