AirHint found the following cheapest return flights from Singapore (SIN) to Phnom-penh (PNH) in December 2025 (see full year).

Return flights

04 Dec - 08 Dec	Malaysia Airlines
15 Dec - 23 Dec	Malaysia Airlines
05 Dec - 07 Dec	Malaysia Airlines
03 Dec - 07 Dec	Malaysia Airlines
04 Dec - 08 Dec	Emirates	direct
03 Dec - 07 Dec	Emirates	direct
15 Dec - 23 Dec	Emirates	direct
26 Dec - 02 Jan	Emirates	direct
05 Dec - 07 Dec	Emirates	direct
24 Dec - 28 Dec	Emirates	direct
19 Dec - 26 Dec	Emirates	direct
28 Dec - 14 Jan	AirAsia
30 Dec - 20 Jan	AirAsia
31 Dec - 20 Jan	AirAsia
30 Dec - 14 Jan	AirAsia
31 Dec - 14 Jan	AirAsia
11 Dec - 01 Jan	AirAsia
26 Dec - 14 Jan	AirAsia
24 Dec - 14 Jan	AirAsia
15 Dec - 01 Jan	Thai AirAsia

Also check the deals for one-way flights from Singapore to Phnom-penh 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 Singapore to Phnom-penh in December from 148€

Return flights