Cheapest return flights from Boston to Lisbon in May from $500

AirHint found the following cheapest return flights from Boston (BOS) to Lisbon (LIS) in May 2026 (see full year).

Return flights

01 May - 08 May TAP direct
06 May - 13 May LEVEL
14 May - 19 May LEVEL
04 May - 22 May Scandinavian Airlines
01 May - 09 May Scandinavian Airlines
04 May - 15 May TAP direct
25 May - 08 Jun Azores Airlines
20 May - 25 May LEVEL
06 May - 13 May TAP direct
04 May - 22 May TAP direct
21 May - 02 Jun Scandinavian Airlines
24 May - 04 Jun Aer Lingus
21 May - 06 Jun LEVEL
24 May - 07 Jun Aer Lingus
10 May - 17 May TAP direct
31 May - 08 Jun Aer Lingus
24 May - 08 Jun Scandinavian Airlines
21 May - 01 Jun Azores Airlines
25 May - 08 Jun TAP direct
24 May - 04 Jun Air France direct

Also check the deals for one-way flights from Boston to Lisbon in May.

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