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

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

Return flights

27 May - 31 May Iberia For Level
03 May - 10 May Iberia For Level
02 May - 09 May Delta
02 May - 08 May Aer Lingus
03 May - 10 May TAP direct
02 May - 09 May TAP direct
02 May - 08 May TAP direct
27 May - 31 May TAP direct

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