Cheapest return flights from Boston to Lisbon in August from 423€

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 - 08 Sep Fly Play
26 Aug - 02 Sep Fly Play
27 Aug - 03 Sep Fly Play
25 Aug - 01 Sep Scandinavian Airlines
20 Aug - 27 Aug Air Canada
19 Aug - 26 Aug Air Canada
12 Aug - 19 Aug Air Canada
13 Aug - 20 Aug Air Canada
24 Aug - 31 Aug Scandinavian Airlines
18 Aug - 03 Sep Finnair
06 Aug - 20 Aug Air Canada
11 Aug - 18 Aug Air Canada
22 Aug - 29 Aug Fly Play
21 Aug - 28 Aug Air Canada
18 Aug - 25 Aug Air Canada
28 Aug - 04 Sep Fly Play
16 Aug - 14 Sep Vueling Airlines
31 Aug - 09 Sep Air Canada
18 Aug - 03 Sep Air France direct
16 Aug - 14 Sep Air France 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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