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

Return flights

24 Sep - 13 Oct	AirAsia
24 Sep - 15 Oct	AirAsia	direct
24 Sep - 28 Sep	AirAsia	direct
24 Sep - 27 Sep	AirAsia	direct
24 Sep - 10 Oct	AirAsia	direct
24 Sep - 12 Oct	AirAsia	direct
24 Sep - 13 Oct	AirAsia	direct
24 Sep - 11 Oct	AirAsia	direct
24 Sep - 09 Oct	AirAsia	direct
29 Sep - 13 Oct	AirAsia
25 Sep - 13 Oct	AirAsia
22 Sep - 13 Oct	AirAsia
18 Sep - 28 Sep	Jin Air	direct
18 Sep - 27 Sep	Jin Air	direct
04 Sep - 08 Sep	Jin Air	direct
04 Sep - 14 Sep	Jin Air	direct
18 Sep - 23 Sep	Jin Air	direct
04 Sep - 09 Sep	Jin Air	direct
04 Sep - 15 Sep	Jin Air	direct
04 Sep - 12 Sep	Jin Air	direct

Also check the deals for one-way flights from Kota Kinabalu 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 Kota Kinabalu to Seoul in September from 125€

Return flights