AirHint found the following cheapest return flights from Los Angeles (LAX) to Seoul (ICN) in September 2026 (see full year).

Return flights

22 Sep - 11 Oct	Philippine Airlines
21 Sep - 11 Oct	Philippine Airlines
21 Sep - 10 Oct	Philippine Airlines
16 Sep - 23 Sep	Philippine Airlines
10 Sep - 01 Oct	Turkish Airlines
10 Sep - 13 Oct	China Airlines
15 Sep - 13 Oct	China Airlines
30 Sep - 13 Oct	China Airlines
11 Sep - 26 Sep	Philippine Airlines
16 Sep - 23 Sep	Air Premia	direct
27 Sep - 04 Oct	China Airlines
26 Sep - 09 Oct	Turkish Airlines
10 Sep - 13 Oct	Asiana Airlines	direct
11 Sep - 26 Sep	Air Premia	direct

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Seoul in September from $707

Return flights