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

Return flights

04 Jun - 11 Jun	KLM
07 Jun - 13 Jun	Aer Lingus
10 Jun - 17 Jun	United
01 Jun - 08 Jun	Azores Airlines
11 Jun - 18 Jun	Finnair
02 Jun - 09 Jun	Azores Airlines
13 Jun - 20 Jun	Finnair
12 Jun - 21 Jun	Finnair
07 Jun - 14 Jun	Azores Airlines
12 Jun - 19 Jun	Azores Airlines
27 Jun - 04 Jul	Azores Airlines
24 Jun - 01 Jul	Azores Airlines
25 Jun - 02 Jul	Azores Airlines

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

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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Cheapest return flights from Lisbon to Boston in June from $584

Return flights