AirHint found the following cheapest return flights from Seoul (GMP) to Los Angeles (LAX) in September 2025 (see full year).

Return flights

19 Sep - 12 Oct	EVA Air
26 Sep - 19 Oct	EVA Air
09 Sep - 15 Sep	EVA Air
24 Sep - 28 Sep	EVA Air
06 Sep - 10 Sep	EVA Air
10 Sep - 22 Sep	EVA Air
06 Sep - 14 Sep	EVA Air
06 Sep - 15 Sep	EVA Air
13 Sep - 21 Sep	EVA Air
09 Sep - 21 Sep	EVA Air
26 Sep - 12 Oct	EVA Air
24 Sep - 02 Oct	EVA Air
20 Sep - 02 Oct	EVA Air
19 Sep - 24 Sep	EVA Air
19 Sep - 22 Sep	EVA Air
27 Sep - 14 Oct	EVA Air
19 Sep - 24 Oct	EVA Air
19 Sep - 13 Oct	EVA Air
19 Sep - 15 Oct	EVA Air
19 Sep - 19 Oct	EVA Air

Also check the deals for one-way flights from Seoul to Los Angeles 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 Seoul to Los Angeles in September from $849

Return flights