Cheapest return flights from Boston to Lisbon in August from $635

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

31 Aug - 07 Sep Scandinavian Airlines
12 Aug - 26 Aug Fly Play
22 Aug - 30 Aug Fly Play
30 Aug - 07 Sep Scandinavian Airlines
30 Aug - 06 Sep Scandinavian Airlines
12 Aug - 26 Aug Air France direct
03 Aug - 14 Aug TAP
03 Aug - 14 Aug TAP direct
31 Aug - 07 Sep TAP direct
05 Aug - 12 Aug TAP direct
30 Aug - 07 Sep TAP direct
30 Aug - 06 Sep Delta direct
22 Aug - 30 Aug Air France direct
26 Aug - 02 Sep TAP direct

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