Cheapest return flights from Lisbon to Boston in August from $458

Best time to book flights for Lisbon (LIS) to Boston (BOS) flights at AirHint

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

Return flights

03 Aug - 12 Aug LEVEL
07 Aug - 12 Aug LEVEL
25 Aug - 14 Sep Fly Play
04 Aug - 14 Aug LEVEL
08 Aug - 16 Aug LEVEL
15 Aug - 30 Aug LEVEL
20 Aug - 09 Sep LEVEL
01 Aug - 09 Aug LEVEL
16 Aug - 20 Aug LEVEL
17 Aug - 15 Sep LEVEL
28 Aug - 19 Sep LEVEL
25 Aug - 14 Sep TAP direct
02 Aug - 16 Aug LEVEL
07 Aug - 12 Aug Air France direct
04 Aug - 14 Aug TAP direct
20 Aug - 09 Sep TAP direct
17 Aug - 15 Sep TAP direct

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

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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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