Cheapest return flights from Boston to Lisbon in May from $448

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

01 May - 05 May Fly Play
01 May - 05 May TAP direct
18 May - 26 May Fly Play
11 May - 28 May LEVEL
05 May - 12 May TAP direct
06 May - 13 May TAP direct
07 May - 14 May TAP direct
01 May - 08 May TAP direct
03 May - 10 May TAP direct
04 May - 11 May TAP direct
28 May - 04 Jun Fly Play
25 May - 07 Jun Fly Play
28 May - 09 Jun Fly Play
26 May - 02 Jun Azores Airlines
27 May - 03 Jun Fly Play
23 May - 13 Jun Azores Airlines
31 May - 08 Jun Fly Play
24 May - 07 Jun Fly Play
28 May - 09 Jun TAP direct
28 May - 04 Jun TAP direct

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