AirHint found the following cheapest return flights from New York (LGA) to Seoul (ICN) in September 2026 (see full year).
Return flights
| 16 Sep - 29 Sep | Korean Air | ||
| 01 Sep - 12 Sep | Korean Air | ||
| 25 Sep - 02 Oct | Korean Air | ||
| 15 Sep - 19 Sep | Delta | ||
| 29 Sep - 04 Oct | Delta |
Also check the deals for one-way flights from New York to Seoul in September.
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