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

Return flights

15 Aug - 17 Aug	AirAsia
17 Aug - 22 Aug	AirAsia
29 Aug - 09 Sep	AirAsia
30 Aug - 04 Sep	AirAsia
15 Aug - 28 Aug	AirAsia
23 Aug - 02 Sep	AirAsia
14 Aug - 28 Aug	AirAsia
18 Aug - 31 Aug	AirAsia
28 Aug - 08 Sep	AirAsia
17 Aug - 30 Aug	AirAsia
12 Aug - 15 Aug	AirAsia
18 Aug - 25 Aug	AirAsia
12 Aug - 17 Aug	AirAsia
09 Aug - 02 Sep	AirAsia
16 Aug - 29 Aug	AirAsia
27 Aug - 13 Sep	AirAsia
20 Aug - 06 Sep	AirAsia
20 Aug - 04 Sep	AirAsia
20 Aug - 07 Sep	AirAsia
20 Aug - 09 Sep	AirAsia

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

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 August from 417€

Return flights