Cheapest one-way flights from Lisbon to Boston in September from $189

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

One-Way flights

17 Sep LEVEL
15 Sep LEVEL
04 Sep LEVEL
10 Sep LEVEL
05 Sep LEVEL
29 Sep Iberia
01 Sep Ryanair
06 Sep Ryanair
20 Sep LEVEL
27 Sep LEVEL

Also check the deals for return flights from Lisbon to Boston 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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