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

Return flights

31 Dec - 25 Jan	Ethiopian Airlines
31 Dec - 16 Jan	Ethiopian Airlines
30 Dec - 20 Jan	Ethiopian Airlines
30 Dec - 29 Jan	Ethiopian Airlines
31 Dec - 22 Jan	Norse Atlantic Airways
31 Dec - 24 Jan	Ethiopian Airlines
30 Dec - 16 Jan	Ethiopian Airlines
29 Dec - 23 Jan	Ethiopian Airlines
29 Dec - 26 Jan	Ethiopian Airlines
29 Dec - 17 Jan	Ethiopian Airlines
28 Dec - 31 Dec	SWISS
29 Dec - 31 Dec	Delta
27 Dec - 30 Dec	Delta
27 Dec - 31 Dec	Delta
30 Dec - 31 Dec	Cathay Pacific
29 Dec - 31 Dec	Asiana Airlines	direct
27 Dec - 31 Dec	Korean Air	direct
30 Dec - 31 Dec	Delta	direct

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from New York to Seoul in December from 832€

Return flights