Cheapest one-way flights from Boston to Lisbon in May from 304€

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 May 2025 (see full year).

One-Way flights

06 May Iberia
12 May Azores Airlines
03 May Spirit Airlines
27 May Azores Airlines
07 May Fly Play
19 May Fly Play
26 May Azores Airlines
04 May Iberia
15 May Spirit Airlines
18 May Iberia

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

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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