Cheapest return flights from London to Boston in August from $461

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

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

Return flights

30 Aug - 17 Sep Icelandair
24 Aug - 10 Sep Icelandair
28 Aug - 17 Sep Icelandair
25 Aug - 17 Sep Icelandair
26 Aug - 07 Sep Icelandair
25 Aug - 07 Sep Icelandair
30 Aug - 06 Sep Icelandair
27 Aug - 07 Sep Icelandair
22 Aug - 10 Sep Icelandair
28 Aug - 10 Sep Iberia
31 Aug - 31 Aug Fly Play
25 Aug - 31 Aug Delta
15 Aug - 31 Aug Delta
14 Aug - 25 Aug Delta
19 Aug - 26 Aug Delta
14 Aug - 26 Aug Delta
21 Aug - 27 Aug Virgin Atlantic
21 Aug - 28 Aug Delta
22 Aug - 26 Aug Delta
25 Aug - 31 Aug Air France direct

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

Skyscanner

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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