Cheapest return flights from Boston to Lisbon in May from 344€

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 May 2025 (see full year).

Return flights

04 May - 09 May Fly Play
18 May - 23 May Fly Play
03 May - 11 May Fly Play
06 May - 19 May LEVEL
15 May - 19 May Fly Play
28 May - 04 Jun Vueling Airlines
17 May - 31 May Icelandair
27 May - 03 Jun Azores Airlines
20 May - 27 May Aer Lingus
22 May - 28 May Fly Play
06 May - 19 May KLM direct
26 May - 02 Jun Fly Play
23 May - 30 May Fly Play
28 May - 18 Jun Fly Play
17 May - 02 Jun SWISS
28 May - 04 Jun Virgin Atlantic direct
17 May - 02 Jun Air France direct
27 May - 03 Jun Virgin Atlantic direct
28 May - 18 Jun Air France direct
23 May - 01 Jun Aer Lingus

Also check the deals for one-way 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon