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

Return flights

26 Dec - 14 Jan	Air Canada
30 Dec - 08 Jan	Air Canada
26 Dec - 12 Jan	Air Canada
06 Dec - 08 Jan	Air Canada
26 Dec - 18 Jan	Air Canada
26 Dec - 17 Jan	Air Canada
08 Dec - 15 Dec	Air Canada
28 Dec - 24 Jan	Air Canada
12 Dec - 08 Jan	Air Canada
06 Dec - 14 Dec	Air Canada
06 Dec - 17 Jan	Air Canada
29 Dec - 23 Jan	Air Canada
02 Dec - 19 Dec	Air Canada
09 Dec - 15 Dec	Air Canada
13 Dec - 21 Dec	Air Canada
17 Dec - 24 Dec	Air Canada
24 Dec - 29 Dec	Air Canada
03 Dec - 31 Dec	Delta
10 Dec - 31 Dec	Delta
23 Dec - 31 Dec	Delta

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 784€

Return flights