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

Return flights

09 Dec - 16 Dec	Air Canada
07 Dec - 16 Dec	Air Canada
10 Dec - 29 Dec	Air Canada
12 Dec - 19 Dec	Air Canada
08 Dec - 15 Dec	jetBlue
06 Dec - 14 Dec	Air Canada
06 Dec - 17 Jan	Air Canada
04 Dec - 11 Dec	Turkish Airlines
02 Dec - 19 Dec	Turkish Airlines
06 Dec - 08 Jan	Air Canada
03 Dec - 09 Jan	Air Canada
10 Dec - 15 Jan	Air Canada
12 Dec - 15 Jan	Air Canada
10 Dec - 17 Jan	Air Canada
09 Dec - 20 Jan	LOT
09 Dec - 15 Dec	Cathay Pacific
15 Dec - 29 Dec	Air Canada
26 Dec - 17 Jan	LOT
30 Dec - 08 Jan	Finnair
16 Dec - 19 Jan	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 834€

Return flights