AirHint found the following cheapest return flights from Kota Kinabalu (BKI) to Bangkok (BKK) in December 2025 (see full year).

Return flights

01 Dec - 13 Dec	Malaysia Airlines
05 Dec - 10 Dec	Royal Brunei
06 Dec - 13 Dec	AirAsia
06 Dec - 14 Dec	AirAsia
07 Dec - 13 Dec	AirAsia
01 Dec - 05 Dec	AirAsia
02 Dec - 13 Dec	AirAsia
06 Dec - 10 Dec	AirAsia
07 Dec - 14 Dec	AirAsia
01 Dec - 14 Dec	AirAsia
12 Dec - 01 Jan	AirAsia
25 Dec - 07 Jan	AirAsia
25 Dec - 08 Jan	AirAsia
25 Dec - 10 Jan	AirAsia
25 Dec - 01 Jan	AirAsia
26 Dec - 07 Jan	AirAsia
26 Dec - 08 Jan	AirAsia
26 Dec - 10 Jan	AirAsia
26 Dec - 01 Jan	AirAsia
20 Dec - 07 Jan	AirAsia

Also check the deals for one-way flights from Kota Kinabalu to Bangkok in December.

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 Bangkok in December from $217

Return flights