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

Return flights

08 Sep - 10 Sep	AirAsia
16 Sep - 02 Oct	AirAsia
16 Sep - 05 Oct	AirAsia
26 Sep - 02 Oct	AirAsia
02 Sep - 18 Sep	AirAsia
05 Sep - 18 Sep	AirAsia
16 Sep - 18 Sep	AirAsia
16 Sep - 29 Sep	AirAsia
01 Sep - 18 Sep	AirAsia
07 Sep - 18 Sep	AirAsia
16 Sep - 03 Oct	AirAsia
20 Sep - 02 Oct	AirAsia
24 Sep - 02 Oct	AirAsia
23 Sep - 02 Oct	AirAsia
26 Sep - 05 Oct	AirAsia
21 Sep - 02 Oct	AirAsia
02 Sep - 06 Sep	AirAsia
02 Sep - 16 Sep	AirAsia
05 Sep - 06 Sep	AirAsia
20 Sep - 05 Oct	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 298€

Return flights