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

Return flights

10 Dec - 24 Dec	Air Canada
28 Dec - 15 Jan	Air Canada
26 Dec - 13 Jan	Air Canada
31 Dec - 18 Jan	Air Canada
29 Dec - 19 Jan	Air Canada
01 Dec - 25 Dec	Air Canada
03 Dec - 09 Dec	Air Canada
13 Dec - 15 Jan	Air Canada
26 Dec - 24 Jan	Air Canada
03 Dec - 10 Dec	Air Canada
31 Dec - 07 Jan	Air Canada
23 Dec - 17 Jan	Air Canada
25 Dec - 21 Jan	Air Canada
23 Dec - 25 Jan	Air Canada
14 Dec - 21 Dec	Air Canada
14 Dec - 20 Dec	Air Canada
24 Dec - 27 Dec	Delta
12 Dec - 31 Dec	Air Canada
15 Dec - 31 Dec	Air Canada
14 Dec - 31 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.

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Cheapest return flights from New York to Seoul in December from 840€

Return flights