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

Return flights

11 Dec - 18 Dec	Air Canada
31 Dec - 08 Jan	Air Canada
31 Dec - 11 Jan	Icelandair
03 Dec - 10 Dec	Air Europa
06 Dec - 10 Dec	Air Europa
07 Dec - 16 Dec	Air France	direct
02 Dec - 08 Dec	Air France	direct
05 Dec - 11 Dec	Air France	direct
06 Dec - 13 Dec	Air Canada
04 Dec - 11 Dec	Air France	direct
09 Dec - 16 Dec	Air France	direct
01 Dec - 08 Dec	Air France	direct
31 Dec - 13 Jan	Delta
31 Dec - 24 Jan	Air France
08 Dec - 14 Jan	Air France
30 Dec - 24 Jan	British Airways
11 Dec - 08 Jan	SWISS
30 Dec - 28 Jan	SWISS
15 Dec - 09 Jan	SWISS
15 Dec - 10 Jan	SWISS

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 339€

Return flights