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

Return flights

08 Sep - 15 Sep	Emirates	direct
09 Sep - 14 Sep	Emirates	direct
07 Sep - 10 Sep	Emirates	direct
10 Sep - 14 Sep	Emirates	direct
29 Sep - 16 Oct	Emirates	direct
30 Sep - 15 Oct	Emirates	direct
05 Sep - 11 Sep	Emirates	direct
08 Sep - 13 Sep	Emirates	direct
08 Sep - 12 Sep	Emirates	direct
19 Sep - 22 Sep	Emirates	direct
20 Sep - 22 Sep	Emirates	direct
15 Sep - 03 Oct	Emirates	direct
05 Sep - 13 Sep	Emirates	direct
11 Sep - 01 Oct	AirAsia
27 Sep - 01 Oct	AirAsia
27 Sep - 12 Oct	AirAsia
27 Sep - 09 Oct	AirAsia
27 Sep - 18 Oct	AirAsia
27 Sep - 05 Oct	AirAsia
27 Sep - 16 Oct	AirAsia

Also check the deals for one-way flights from Singapore to Phnom-penh in September.

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 September from $198

Return flights