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

Return flights

29 Jul - 11 Aug	Iberia
31 Jul - 22 Aug	TAP
07 Jul - 20 Jul	American Airlines
09 Jul - 22 Jul	TAP
03 Jul - 10 Jul	Azores Airlines
08 Jul - 15 Jul	Azores Airlines
06 Jul - 13 Jul	Azores Airlines
05 Jul - 12 Jul	Azores Airlines
07 Jul - 14 Jul	Azores Airlines
04 Jul - 11 Jul	Azores Airlines
09 Jul - 16 Jul	Azores Airlines
02 Jul - 09 Jul	Azores Airlines
29 Jul - 11 Aug	Virgin Atlantic	direct

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

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 July from 672€

Return flights