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

Return flights

24 Dec - 30 Dec	AirAsia
25 Dec - 28 Dec	AirAsia
26 Dec - 02 Jan	AirAsia	direct
24 Dec - 30 Dec	AirAsia	direct
25 Dec - 29 Dec	AirAsia
25 Dec - 29 Dec	AirAsia	direct
29 Dec - 05 Jan	AirAsia
25 Dec - 28 Dec	AirAsia	direct
26 Dec - 28 Dec	AirAsia
29 Dec - 30 Dec	AirAsia
25 Dec - 27 Dec	AirAsia	direct
29 Dec - 01 Jan	AirAsia
30 Dec - 01 Jan	AirAsia
26 Dec - 28 Dec	Scoot	direct
29 Dec - 05 Jan	Scoot	direct
29 Dec - 01 Jan	Scoot	direct
30 Dec - 01 Jan	Scoot	direct

Also check the deals for one-way flights from Kota Kinabalu to Singapore 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 Singapore in December from 158€

Return flights