AirHint found the following cheapest return flights from New York (JFK) to Seoul (ICN) in September 2026 (see full year).

Return flights

04 Sep - 12 Sep	Cathay Pacific
07 Sep - 17 Sep	Cathay Pacific
06 Sep - 06 Oct	China Airlines
06 Sep - 19 Sep	China Airlines
01 Sep - 22 Sep	Turkish Airlines
30 Sep - 11 Oct	China Airlines
07 Sep - 17 Sep	Asiana Airlines	direct
01 Sep - 22 Sep	Korean Air	direct
04 Sep - 12 Sep	Asiana Airlines	direct
06 Sep - 06 Oct	Korean Air	direct
30 Sep - 11 Oct	Korean Air	direct
06 Sep - 12 Sep	Delta	direct
06 Sep - 19 Sep	Korean Air	direct

Also check the deals for one-way flights from New York to Seoul 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 New York to Seoul in September from 891€

Return flights