Cheapest return flights from Boston to Lisbon in December from $667

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

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

Return flights

26 Dec - 31 Dec Azores Airlines
01 Dec - 08 Dec TAP direct
11 Dec - 18 Dec TAP direct
31 Dec - 07 Jan TAP direct
25 Dec - 30 Dec British Airways
27 Dec - 02 Jan Azores Airlines
21 Dec - 28 Dec TAP direct
19 Dec - 04 Jan Fly Play
19 Dec - 03 Jan Fly Play
25 Dec - 30 Dec TAP direct
26 Dec - 31 Dec TAP direct
27 Dec - 02 Jan TAP direct
19 Dec - 03 Jan TAP direct

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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