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

Return flights

02 Dec - 16 Dec	Air Europa
02 Dec - 09 Dec	Air Europa
05 Dec - 11 Dec	Iberia
05 Dec - 10 Dec	Iberia
05 Dec - 12 Dec	Iberia
03 Dec - 11 Dec	Iberia
02 Dec - 08 Dec	Air Europa
03 Dec - 08 Dec	Air Europa
04 Dec - 07 Dec	Air Canada
05 Dec - 08 Dec	Air France	direct
31 Dec - 24 Jan	Air Canada
31 Dec - 13 Jan	Delta
08 Dec - 14 Jan	Air France
11 Dec - 08 Jan	SWISS
13 Dec - 08 Jan	Aer Lingus
30 Dec - 13 Jan	Iberia
30 Dec - 24 Jan	Iberia
15 Dec - 09 Jan	SWISS
14 Dec - 19 Jan	SWISS
29 Dec - 24 Jan	Aer Lingus

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 $385

Return flights