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

Return flights

28 Dec - 15 Jan	Air Canada
31 Dec - 18 Jan	Air Canada
03 Dec - 09 Dec	Air Canada
06 Dec - 13 Dec	Air Canada
13 Dec - 20 Dec	Air Canada
29 Dec - 19 Jan	Air Canada
28 Dec - 08 Jan	Finnair
24 Dec - 07 Jan	Finnair
05 Dec - 04 Jan	Finnair
26 Dec - 13 Jan	LOT
26 Dec - 24 Jan	LOT
10 Dec - 24 Dec	Finnair
24 Dec - 20 Jan	Finnair
24 Dec - 16 Jan	Finnair
22 Dec - 29 Dec	Finnair
13 Dec - 31 Dec	Finnair
15 Dec - 31 Dec	Finnair
12 Dec - 31 Dec	Finnair
14 Dec - 31 Dec	Finnair
21 Dec - 28 Dec	Finnair

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 834€

Return flights