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

Return flights

05 Dec - 12 Dec	KLM
01 Dec - 08 Dec	KLM
02 Dec - 09 Dec	KLM
03 Dec - 10 Dec	KLM
04 Dec - 11 Dec	KLM
06 Dec - 13 Dec	Air Canada
16 Dec - 01 Jan	United
15 Dec - 02 Jan	United
22 Dec - 13 Jan	Air Canada
17 Dec - 24 Dec	Air Canada
23 Dec - 06 Jan	KLM
16 Dec - 05 Jan	United
24 Dec - 31 Dec	United
20 Dec - 28 Dec	Air Canada
12 Dec - 03 Jan	Lufthansa
17 Dec - 01 Jan	United
23 Dec - 02 Jan	Air Canada
18 Dec - 01 Jan	United
22 Dec - 05 Jan	Air Canada
19 Dec - 28 Dec	Delta

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from New York to Lisbon in December from 364€

Return flights