Cheapest return flights from Sydney to Phnom-penh in September from $493

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

Return flights

23 Sep - 30 Sep Scoot Tigerair
06 Sep - 13 Sep Malaysia Airlines
09 Sep - 26 Sep AirAsia X
07 Sep - 29 Sep Singapore Airlines
16 Sep - 26 Sep Singapore Airlines
09 Sep - 23 Sep Singapore Airlines
06 Sep - 30 Oct Singapore Airlines
09 Sep - 19 Sep AirAsia X
03 Sep - 19 Sep AirAsia X
03 Sep - 23 Sep AirAsia X
03 Sep - 20 Sep AirAsia X
07 Sep - 03 Oct Singapore Airlines
19 Sep - 03 Oct Singapore Airlines
20 Sep - 03 Oct Singapore Airlines
29 Sep - 04 Oct Cathay Pacific
26 Sep - 06 Oct Cathay Pacific
25 Sep - 11 Oct Cathay Pacific
27 Sep - 06 Oct AirAsia X
25 Sep - 06 Oct AirAsia X
18 Sep - 06 Oct AirAsia X

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

Skyscanner

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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