Cheapest one-way flights from Boston to Lisbon in September from 207€

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

AirHint found the following cheapest one-way flights from Boston (BOS) to Lisbon (LIS) in September 2025 (see full year).

One-Way flights

30 Sep Iberia
22 Sep Iberia
25 Sep Iberia
15 Sep Fly Play
19 Sep Iberia
18 Sep Iberia
07 Sep Fly Play
04 Sep Azores Airlines
22 Sep TAP direct
30 Sep TAP direct

Also check the deals for return flights from Boston to Lisbon in September.

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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