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

Return flights

30 Dec - 28 Jan	TAP	direct
30 Dec - 13 Jan	TAP
29 Dec - 28 Jan	TAP
31 Dec - 08 Jan	Icelandair
29 Dec - 13 Jan	United	direct
31 Dec - 13 Jan	Delta	direct
29 Dec - 28 Jan	Brussels Airlines	direct
30 Dec - 13 Jan	TAP	direct
28 Dec - 17 Jan	United	direct
29 Dec - 12 Jan	United	direct
25 Dec - 31 Dec	SWISS
25 Dec - 30 Dec	Brussels Airlines
26 Dec - 30 Dec	United
26 Dec - 31 Dec	Lufthansa
27 Dec - 29 Dec	Air Europa
25 Dec - 29 Dec	Brussels Airlines	direct
25 Dec - 31 Dec	Brussels Airlines	direct
25 Dec - 30 Dec	Lufthansa	direct
26 Dec - 30 Dec	United	direct
31 Dec - 31 Dec	TAP

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 514€

Return flights