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

Return flights

02 Sep - 12 Sep	AirAsia Cambodia
02 Sep - 10 Sep	AirAsia Cambodia
20 Sep - 29 Sep	AirAsia Cambodia
20 Sep - 28 Sep	AirAsia Cambodia
20 Sep - 27 Sep	AirAsia Cambodia
02 Sep - 19 Sep	AirAsia Cambodia
20 Sep - 24 Sep	AirAsia Cambodia

Also check the deals for one-way flights from Phnom-penh to Perth 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 Phnom-penh to Perth in September from 393€

Return flights