Cheapest return flights from Boston to Lisbon in August from 551€

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

26 Aug - 01 Sep Fly Play
19 Aug - 26 Aug Finnair
30 Aug - 06 Sep Fly Play
29 Aug - 01 Sep Fly Play
03 Aug - 11 Aug Fly Play
19 Aug - 28 Aug Vueling Airlines
07 Aug - 23 Aug United
17 Aug - 23 Aug Icelandair
19 Aug - 26 Aug Air France direct
02 Aug - 09 Aug Fly Play
11 Aug - 17 Aug Fly Play
02 Aug - 11 Aug Lufthansa
03 Aug - 09 Aug Fly Play
30 Aug - 06 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon