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

Return flights

28 Oct - 31 Oct	AirAsia
26 Oct - 31 Oct	AirAsia
26 Oct - 29 Oct	AirAsia
28 Oct - 18 Nov	AirAsia
28 Oct - 17 Nov	AirAsia
28 Oct - 10 Nov	AirAsia
28 Oct - 01 Nov	AirAsia
28 Oct - 11 Nov	AirAsia
30 Oct - 18 Nov	AirAsia
30 Oct - 19 Nov	AirAsia
30 Oct - 17 Nov	AirAsia
30 Oct - 10 Nov	AirAsia
30 Oct - 01 Nov	AirAsia
27 Oct - 31 Oct	AirAsia
27 Oct - 29 Oct	AirAsia
06 Oct - 10 Oct	AirAsia
07 Oct - 11 Oct	AirAsia
16 Oct - 23 Oct	AirAsia
13 Oct - 23 Oct	AirAsia
22 Oct - 31 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 $585

Return flights