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

Return flights

03 Dec - 10 Dec	Air Europa
04 Dec - 09 Dec	TAP	direct
05 Dec - 12 Dec	TAP	direct
03 Dec - 10 Dec	TAP	direct
04 Dec - 12 Dec	TAP	direct
06 Dec - 13 Dec	TAP	direct
11 Dec - 17 Dec	Air Canada
02 Dec - 07 Dec	Air Canada
31 Dec - 12 Jan	Air Canada
31 Dec - 24 Jan	Air Canada
07 Dec - 14 Dec	Air Canada
30 Dec - 24 Jan	Air Canada
07 Dec - 16 Dec	Air Canada
30 Dec - 28 Jan	United	direct
31 Dec - 24 Jan	United	direct
30 Dec - 24 Jan	United	direct
08 Dec - 14 Jan	United	direct
30 Dec - 12 Jan	United	direct
31 Dec - 12 Jan	United	direct
30 Dec - 11 Jan	Air Canada

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

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 New York to Lisbon in December from $379

Return flights