Cheapest return flights from Boston to Lisbon in December from 406€

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

Return flights

02 Dec - 16 Dec Air France direct
16 Dec - 06 Jan Air Canada
02 Dec - 14 Dec TAP direct
05 Dec - 19 Dec United
05 Dec - 19 Dec Air France direct
27 Dec - 07 Jan Delta
18 Dec - 26 Dec Delta direct
14 Dec - 01 Jan Iberia
14 Dec - 01 Jan Delta direct
25 Dec - 31 Dec TAP direct
19 Dec - 28 Dec Azores Airlines
18 Dec - 25 Dec TAP direct
20 Dec - 30 Dec TAP direct
19 Dec - 30 Dec Azores Airlines

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

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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