Cheapest return flights from London to Boston in August from $479

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

Return flights

31 Aug - 14 Sep Air Canada
30 Aug - 06 Sep Air Canada
30 Aug - 09 Sep Air Canada
31 Aug - 24 Sep Air Canada
31 Aug - 07 Sep Air Canada
30 Aug - 21 Sep Air Canada
30 Aug - 14 Sep Air Canada
31 Aug - 21 Sep Air Canada
31 Aug - 11 Sep United
31 Aug - 08 Sep Air Canada
27 Aug - 31 Aug Eurowings
26 Aug - 31 Aug Scandinavian Airlines
28 Aug - 31 Aug Brussels Airlines
27 Aug - 30 Aug jetBlue direct
28 Aug - 29 Aug Scandinavian Airlines
26 Aug - 29 Aug Vueling Airlines
26 Aug - 28 Aug Vueling Airlines
27 Aug - 29 Aug Eurowings
26 Aug - 31 Aug British Airways direct
25 Aug - 26 Aug SWISS

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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