AirHint found the following cheapest return flights from Colombo (CMB) to Sydney (SYD) in October 2025 (see full year).

Return flights

01 Oct - 08 Oct	AirAsia
31 Oct - 19 Nov	AirAsia
31 Oct - 10 Nov	AirAsia
31 Oct - 07 Nov	AirAsia
31 Oct - 12 Nov	AirAsia
24 Oct - 10 Nov	AirAsia
24 Oct - 07 Nov	AirAsia
24 Oct - 01 Nov	AirAsia
24 Oct - 12 Nov	AirAsia
30 Oct - 19 Nov	AirAsia
30 Oct - 10 Nov	AirAsia
22 Oct - 25 Oct	AirAsia
22 Oct - 24 Oct	AirAsia
24 Oct - 28 Oct	AirAsia
24 Oct - 29 Oct	AirAsia
27 Oct - 29 Oct	AirAsia
22 Oct - 28 Oct	AirAsia
22 Oct - 29 Oct	AirAsia
26 Oct - 28 Oct	AirAsia
26 Oct - 29 Oct	AirAsia

Also check the deals for one-way flights from Colombo to Sydney in October.

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 Sydney in October from 512€

Return flights