AirHint found the following cheapest return flights from Las Vegas (LAS) to Seoul (ICN) in September 2026 (see full year).

Return flights

07 Sep - 22 Sep	Southwest Airlines
01 Sep - 22 Sep	Southwest Airlines
01 Sep - 06 Oct	Southwest Airlines
02 Sep - 22 Sep	Alaska Airlines
07 Sep - 28 Sep	Alaska Airlines
02 Sep - 22 Sep	Korean Air	direct
01 Sep - 22 Sep	Korean Air	direct
07 Sep - 22 Sep	Korean Air	direct
07 Sep - 28 Sep	Korean Air	direct
01 Sep - 06 Oct	Delta	direct

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to Seoul in September from 854€

Return flights