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

Return flights

29 Aug - 05 Sep	IndiGo
27 Aug - 03 Sep	AirAsia
30 Aug - 02 Sep	Air India
27 Aug - 14 Sep	AirAsia
27 Aug - 17 Sep	AirAsia
20 Aug - 27 Aug	FitsAir
24 Aug - 31 Aug	Air India
31 Aug - 03 Sep	AirAsia
31 Aug - 07 Sep	AirAsia
28 Aug - 04 Sep	AirAsia
25 Aug - 14 Sep	AirAsia
30 Aug - 06 Sep	AirAsia
27 Aug - 31 Aug	AirAsia
22 Aug - 29 Aug	IndiGo
21 Aug - 28 Aug	AirAsia
25 Aug - 28 Aug	AirAsia
25 Aug - 31 Aug	AirAsia
27 Aug - 29 Aug	AirAsia
18 Aug - 25 Aug	AirAsia
25 Aug - 27 Aug	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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Colombo to Sydney in August from 514€

Return flights