AirHint found the following cheapest return flights from Penang (PEN) to Seoul (ICN) in September 2025 (see full year).

Return flights

29 Sep - 13 Oct	AirAsia
29 Sep - 10 Oct	AirAsia
08 Sep - 10 Sep	AirAsia
08 Sep - 11 Sep	AirAsia
29 Sep - 11 Oct	AirAsia
03 Sep - 10 Sep	AirAsia
03 Sep - 11 Sep	AirAsia
05 Sep - 10 Sep	AirAsia
05 Sep - 11 Sep	AirAsia
20 Sep - 10 Oct	AirAsia
09 Sep - 13 Sep	Scoot Tigerair
01 Sep - 02 Sep	AirAsia
01 Sep - 10 Sep	AirAsia
01 Sep - 11 Sep	AirAsia
20 Sep - 11 Oct	AirAsia
28 Sep - 13 Oct	AirAsia
28 Sep - 10 Oct	AirAsia
28 Sep - 11 Oct	AirAsia
30 Sep - 13 Oct	AirAsia
30 Sep - 10 Oct	AirAsia

Also check the deals for one-way flights from Penang 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 Penang to Seoul in September from $212

Return flights