AirHint found the following cheapest return flights from Colombo (CMB) to Perth (PER) in September 2025 (see full year).

Return flights

03 Sep - 13 Sep	AirAsia
03 Sep - 12 Sep	AirAsia
02 Sep - 13 Sep	AirAsia
02 Sep - 12 Sep	AirAsia
18 Sep - 05 Oct	AirAsia
18 Sep - 08 Oct	AirAsia
23 Sep - 09 Oct	AirAsia
23 Sep - 05 Oct	AirAsia
23 Sep - 08 Oct	AirAsia
23 Sep - 11 Oct	AirAsia
18 Sep - 09 Oct	AirAsia
18 Sep - 01 Oct	AirAsia
18 Sep - 07 Oct	AirAsia
18 Sep - 30 Sep	AirAsia
18 Sep - 03 Oct	AirAsia
23 Sep - 30 Sep	AirAsia
24 Sep - 30 Sep	AirAsia
14 Sep - 30 Sep	AirAsia
20 Sep - 30 Sep	AirAsia
03 Sep - 09 Sep	AirAsia

Also check the deals for one-way flights from Colombo 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 Colombo to Perth in September from 416€

Return flights