AirHint found the following cheapest return flights from Sydney (SYD) to Colombo (CMB) in August 2026 (see full year).

Return flights

23 Aug - 07 Sep	AirAsia X
02 Aug - 14 Aug	AirAsia X
02 Aug - 17 Aug	AirAsia X
11 Aug - 25 Aug	AirAsia X
26 Aug - 10 Sep	AirAsia X
21 Aug - 05 Sep	AirAsia X
14 Aug - 11 Sep	AirAsia X
01 Aug - 14 Aug	AirAsia X
08 Aug - 15 Aug	AirAsia X
22 Aug - 05 Sep	AirAsia X
22 Aug - 06 Sep	AirAsia X
01 Aug - 09 Sep	AirAsia X
01 Aug - 17 Aug	AirAsia X
28 Aug - 12 Sep	AirAsia X
11 Aug - 23 Aug	Singapore Airlines
01 Aug - 15 Aug	Singapore Airlines
01 Aug - 01 Sep	Singapore Airlines
21 Aug - 04 Sep	Singapore Airlines
02 Aug - 30 Aug	AirAsia X
16 Aug - 30 Aug	AirAsia X

Also check the deals for one-way flights from Sydney to Colombo 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 Sydney to Colombo in August from $454

Return flights