AirHint found the following cheapest return flights from Kuching (KCH) to Bintulu (BTU) in December 2025 (see full year).

Return flights

15 Dec - 28 Dec	AirAsia	direct
15 Dec - 27 Dec	AirAsia	direct
15 Dec - 01 Jan	AirAsia	direct
26 Dec - 28 Dec	AirAsia	direct
26 Dec - 27 Dec	AirAsia	direct
28 Dec - 28 Dec	AirAsia	direct
24 Dec - 28 Dec	AirAsia	direct
24 Dec - 27 Dec	AirAsia	direct
26 Dec - 01 Jan	AirAsia	direct
28 Dec - 01 Jan	AirAsia	direct
24 Dec - 01 Jan	AirAsia	direct

Also check the deals for one-way flights from Kuching to Bintulu 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 Kuching to Bintulu in December from 50€

Return flights