Cheapest return flights from Boston to London in August from $536

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 August 2025 (see full year).

Return flights

22 Aug - 25 Aug Scandinavian Airlines
14 Aug - 31 Aug Icelandair
16 Aug - 31 Aug Icelandair
07 Aug - 29 Aug Icelandair
06 Aug - 10 Sep Icelandair
22 Aug - 02 Sep Icelandair
22 Aug - 01 Sep Icelandair
22 Aug - 29 Aug Icelandair
20 Aug - 27 Aug Icelandair
24 Aug - 30 Aug Icelandair
12 Aug - 07 Sep Icelandair
19 Aug - 06 Sep Icelandair
22 Aug - 05 Sep Icelandair
25 Aug - 29 Aug Icelandair
14 Aug - 27 Aug Icelandair
22 Aug - 30 Aug Icelandair
01 Aug - 20 Sep British Airways
06 Aug - 10 Sep Finnair direct
01 Aug - 20 Sep Finnair direct
28 Aug - 19 Sep Icelandair

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