Cheapest return flights from Boston to Lisbon in August from $466

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

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

Return flights

24 Aug - 18 Sep LEVEL
25 Aug - 23 Sep LEVEL
25 Aug - 21 Sep LEVEL
12 Aug - 19 Aug LEVEL
27 Aug - 08 Sep LEVEL
31 Aug - 06 Sep LEVEL
12 Aug - 17 Aug LEVEL
17 Aug - 27 Aug LEVEL
08 Aug - 14 Aug LEVEL
26 Aug - 02 Sep Scandinavian Airlines
18 Aug - 24 Aug LEVEL
13 Aug - 24 Aug LEVEL
11 Aug - 25 Aug LEVEL
27 Aug - 02 Sep Scandinavian Airlines
03 Aug - 14 Aug LEVEL
20 Aug - 24 Aug LEVEL
25 Aug - 31 Aug LEVEL
27 Aug - 09 Sep Scandinavian Airlines
28 Aug - 03 Sep LEVEL
28 Aug - 02 Sep LEVEL

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