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

Return flights

21 Sep - 25 Sep	Singapore Airlines
06 Sep - 12 Sep	Korean Air
21 Sep - 28 Sep	Korean Air
20 Sep - 26 Sep	Korean Air
17 Sep - 22 Sep	Korean Air
23 Sep - 26 Sep	Korean Air
07 Sep - 12 Sep	Korean Air
25 Sep - 29 Sep	Korean Air
27 Sep - 30 Sep	Korean Air
26 Sep - 29 Sep	Korean Air
27 Sep - 01 Oct	Korean Air
27 Sep - 02 Oct	Korean Air
29 Sep - 02 Oct	Korean Air
28 Sep - 03 Oct	Korean Air
27 Sep - 03 Oct	Korean Air
05 Sep - 05 Oct	Korean Air
27 Sep - 04 Oct	Korean Air
30 Sep - 04 Oct	Korean Air
23 Sep - 08 Oct	Korean Air
25 Sep - 10 Oct	Korean Air

Also check the deals for one-way flights from Busan to Kota Kinabalu 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 Busan to Kota Kinabalu in September from $426

Return flights