Cheapest return flights from Boston to Lisbon in May from $417

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

08 May - 16 May Fly Play
08 May - 12 May Fly Play
04 May - 09 May Fly Play
04 May - 12 May Fly Play
11 May - 19 May Fly Play
27 May - 08 Jun Condor
11 May - 16 May Fly Play
17 May - 20 May Condor
18 May - 23 May Fly Play
05 May - 10 May Condor
16 May - 23 May Condor
13 May - 11 Jun LEVEL
19 May - 04 Jun LEVEL
10 May - 30 Jun Fly Play
25 May - 05 Jun TAP
24 May - 07 Jun Fly Play
31 May - 05 Jun Fly Play
26 May - 03 Jun Iberia
30 May - 08 Jun Fly Play
29 May - 04 Jun Vueling Airlines

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.

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