AirHint found the following cheapest return flights from Seoul (GMP) to Kuala Lumpur (KUL) in September 2025 (see full year).

Return flights

01 Sep - 04 Sep	China Eastern
22 Sep - 25 Sep	China Eastern
22 Sep - 24 Sep	China Eastern
10 Sep - 17 Sep	Air China
05 Sep - 11 Sep	Air China
08 Sep - 11 Sep	Air China
13 Sep - 15 Sep	Jeju Air
04 Sep - 08 Sep	Jeju Air
08 Sep - 10 Sep	Air China
11 Sep - 23 Sep	Peach
29 Sep - 03 Oct	Air China
28 Sep - 04 Oct	Peach
28 Sep - 13 Oct	Peach
08 Sep - 07 Oct	Air China
26 Sep - 07 Oct	Air China
27 Sep - 03 Oct	EVA Air
26 Sep - 03 Oct	EVA Air
26 Sep - 10 Oct	Peach
26 Sep - 06 Oct	Air China
29 Sep - 06 Oct	Air China

Also check the deals for one-way flights from Seoul to Kuala Lumpur 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 Kuala Lumpur in September from $274

Return flights