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

Return flights

31 Dec - 13 Jan	Delta
31 Dec - 08 Jan	Icelandair
30 Dec - 13 Jan	Delta
08 Dec - 12 Dec	Iberia
08 Dec - 14 Jan	SWISS
09 Dec - 13 Dec	Iberia
29 Dec - 24 Jan	Air France
08 Dec - 14 Jan	Air France	direct
09 Dec - 20 Jan	SWISS
31 Dec - 07 Jan	Air Canada
11 Dec - 18 Dec	Virgin Atlantic	direct
10 Dec - 13 Dec	SWISS
11 Dec - 16 Dec	Air France	direct
08 Dec - 09 Dec	Royal Air Maroc
30 Dec - 23 Jan	United
10 Dec - 14 Dec	Air France
29 Dec - 13 Jan	Virgin Atlantic	direct
09 Dec - 11 Dec	Royal Air Maroc
11 Dec - 15 Dec	SWISS
14 Dec - 21 Dec	KLM	direct

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 363€

Return flights