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

Return flights

01 Sep - 15 Sep	Korean Air
01 Sep - 09 Sep	Korean Air
09 Sep - 23 Sep	Korean Air
07 Sep - 14 Sep	Korean Air
21 Sep - 28 Sep	Korean Air
21 Sep - 30 Sep	Korean Air
23 Sep - 30 Sep	Korean Air
01 Sep - 21 Sep	Korean Air
18 Sep - 12 Oct	Korean Air
01 Sep - 12 Sep	Korean Air
02 Sep - 11 Sep	Korean Air
28 Sep - 26 Oct	Korean Air
29 Sep - 26 Oct	Korean Air
30 Sep - 26 Oct	Korean Air
30 Sep - 21 Oct	Korean Air
29 Sep - 04 Oct	Korean Air
21 Sep - 19 Oct	Porter Airlines (Canada) Ltd

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 1278€

Return flights