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

Return flights

04 Dec - 09 Dec	Delta
05 Dec - 10 Dec	Delta
03 Dec - 07 Dec	Delta
04 Dec - 11 Dec	Delta
03 Dec - 09 Dec	Delta
03 Dec - 08 Dec	Delta
05 Dec - 11 Dec	Delta
04 Dec - 08 Dec	Delta
05 Dec - 09 Dec	Delta
07 Dec - 14 Dec	Delta
25 Dec - 01 Jan	Air France
20 Dec - 01 Jan	KLM
18 Dec - 06 Jan	Air Canada
20 Dec - 06 Jan	Air Canada
23 Dec - 10 Jan	Air Canada
25 Dec - 06 Jan	Air Canada
27 Dec - 23 Jan	Air Canada
27 Dec - 01 Jan	Air France
29 Dec - 05 Jan	Air Canada
26 Dec - 07 Jan	United

Also check the deals for one-way flights from Lisbon to New York 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 Lisbon to New York in December from 431€

Return flights