Cheapest return flights from Lisbon to Boston in May from $343

Best time to book flights for Lisbon (LIS) to Boston (BOS) flights at AirHint

AirHint found the following cheapest return flights from Lisbon (LIS) to Boston (BOS) in May 2025 (see full year).

Return flights

05 May - 11 May Fly Play
02 May - 08 May Fly Play
06 May - 13 May Aer Lingus
07 May - 26 May LEVEL
08 May - 13 May Ryanair
20 May - 02 Jun LEVEL
12 May - 19 May Finnair
05 May - 12 May Finnair
30 May - 10 Jun Finnair
21 May - 28 May LEVEL
08 May - 12 May Finnair
31 May - 07 Jun British Airways
03 May - 10 May British Airways
26 May - 13 Jun Finnair
22 May - 03 Jun Aer Lingus
30 May - 10 Jun Virgin Atlantic direct
26 May - 13 Jun Air France direct
31 May - 07 Jun Air France direct

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

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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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