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

Return flights

07 Dec - 26 Dec	Air Canada
13 Dec - 21 Dec	Lufthansa
15 Dec - 20 Jan	Air Canada
22 Dec - 14 Jan	Air Canada
30 Dec - 05 Jan	Air Canada
16 Dec - 09 Jan	Porter Airlines (Canada) Ltd
14 Dec - 09 Jan	Lufthansa
29 Dec - 05 Jan	Air Canada
15 Dec - 19 Jan	Air Canada
26 Dec - 02 Jan	Air Canada
23 Dec - 10 Jan	Air Canada
29 Dec - 01 Jan	Delta
01 Dec - 31 Dec	Korean Air
17 Dec - 24 Dec	Air Canada
25 Dec - 31 Dec	Korean Air
17 Dec - 30 Dec	Delta
17 Dec - 23 Dec	Delta
18 Dec - 25 Dec	Delta
18 Dec - 24 Dec	Delta
20 Dec - 30 Dec	Air Canada

Also check the deals for one-way flights from New York to Seoul 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 Seoul

Cheap car rent in Seoul

Cheapest return flights from New York to Seoul in December from $1109

Return flights