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

Return flights

16 Dec - 17 Dec	AirAsia Cambodia
06 Dec - 17 Dec	AirAsia Cambodia
08 Dec - 17 Dec	AirAsia Cambodia
17 Dec - 17 Dec	AirAsia Cambodia
06 Dec - 10 Dec	AirAsia Cambodia
06 Dec - 16 Dec	AirAsia Cambodia
04 Dec - 17 Dec	Thai AirAsia
08 Dec - 10 Dec	AirAsia Cambodia
08 Dec - 16 Dec	AirAsia Cambodia
11 Dec - 17 Dec	AirAsia Cambodia
24 Dec - 11 Jan	AirAsia Cambodia
23 Dec - 11 Jan	AirAsia Cambodia
24 Dec - 14 Jan	AirAsia Cambodia
25 Dec - 11 Jan	AirAsia Cambodia
25 Dec - 14 Jan	AirAsia Cambodia
25 Dec - 15 Jan	AirAsia Cambodia

Also check the deals for one-way flights from Phnom-penh 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 Phnom-penh to Singapore in December from 278€

Return flights