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

Return flights

19 Sep - 26 Sep	Japan Airlines
09 Sep - 16 Sep	Japan Airlines
04 Sep - 13 Sep	Japan Airlines
09 Sep - 17 Sep	Japan Airlines
18 Sep - 25 Sep	Japan Airlines
11 Sep - 15 Sep	Japan Airlines
11 Sep - 17 Sep	Japan Airlines
12 Sep - 17 Sep	Japan Airlines
17 Sep - 22 Sep	Japan Airlines
17 Sep - 23 Sep	Japan Airlines
24 Sep - 01 Oct	ANA
15 Sep - 22 Oct	ANA
23 Sep - 02 Oct	ANA
28 Sep - 14 Oct	ANA
26 Sep - 15 Oct	ANA
11 Sep - 02 Oct	ANA
25 Sep - 02 Oct	ANA
23 Sep - 21 Oct	ANA
30 Sep - 14 Oct	ANA
29 Sep - 14 Oct	ANA

Also check the deals for one-way flights from Seoul to New York in September.

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 September from $710

Return flights