AirHint found the following cheapest return flights from Boston (BOS) to London (LGW) in August 2026 (see full year).

Return flights

11 Aug - 19 Aug	Air France
18 Aug - 25 Aug	Air France
25 Aug - 01 Sep	jetBlue	direct
18 Aug - 25 Aug	jetBlue	direct
19 Aug - 26 Aug	Air France
11 Aug - 19 Aug	jetBlue	direct
19 Aug - 26 Aug	jetBlue	direct
30 Aug - 06 Sep	SWISS
23 Aug - 31 Aug	TAP
08 Aug - 20 Aug	jetBlue	direct
27 Aug - 30 Aug	TAP
27 Aug - 31 Aug	TAP
28 Aug - 21 Sep	TAP
30 Aug - 06 Sep	jetBlue	direct

Also check the deals for one-way flights from Boston to London 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 Boston to London in August from 450€

Return flights