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

Return flights

26 Sep - 15 Oct	AirAsia
26 Sep - 13 Oct	AirAsia
26 Sep - 08 Oct	AirAsia
26 Sep - 12 Oct	AirAsia
26 Sep - 09 Oct	AirAsia
08 Sep - 23 Sep	AirAsia
27 Sep - 15 Oct	AirAsia
27 Sep - 13 Oct	AirAsia
27 Sep - 08 Oct	AirAsia
27 Sep - 12 Oct	AirAsia
25 Sep - 15 Oct	AirAsia
19 Sep - 24 Sep	Firefly
08 Sep - 12 Sep	AirAsia
21 Sep - 23 Sep	AirAsia
20 Sep - 23 Sep	AirAsia
19 Sep - 23 Sep	AirAsia
07 Sep - 23 Sep	AirAsia
05 Sep - 23 Sep	AirAsia
01 Sep - 05 Sep	AirAsia
01 Sep - 10 Sep	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 203€

Return flights