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

Return flights

03 Dec - 10 Dec	Japan Airlines
07 Dec - 15 Dec	ANA
15 Dec - 29 Dec	ANA
17 Dec - 23 Dec	ANA
09 Dec - 15 Dec	ANA
05 Dec - 09 Dec	ANA
16 Dec - 23 Dec	ANA
02 Dec - 09 Dec	ANA
19 Dec - 30 Dec	ANA
01 Dec - 10 Dec	ANA
18 Dec - 07 Jan	ANA
18 Dec - 15 Jan	ANA
19 Dec - 04 Jan	ANA
10 Dec - 03 Jan	ANA
19 Dec - 02 Jan	ANA
19 Dec - 03 Jan	ANA
31 Dec - 20 Jan	Japan Airlines
13 Dec - 02 Jan	ANA
31 Dec - 08 Jan	Air China
31 Dec - 22 Jan	Air China

Also check the deals for one-way flights from Seoul to New York 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 Seoul to New York in December from $896

Return flights