AirHint found the following cheapest return flights from Adelaide (ADL) to Colombo (CMB) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep	Cathay Pacific
04 Sep - 12 Sep	Malaysia Airlines
04 Sep - 11 Sep	Malaysia Airlines
04 Sep - 13 Sep	Malaysia Airlines
05 Sep - 13 Sep	Malaysia Airlines
07 Sep - 22 Sep	Malaysia Airlines
06 Sep - 22 Sep	Malaysia Airlines
07 Sep - 21 Sep	Singapore Airlines
15 Sep - 22 Sep	Singapore Airlines
06 Sep - 20 Sep	Malaysia Airlines

Also check the deals for one-way flights from Adelaide to Colombo in September.

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 Adelaide to Colombo in September from 549€

Return flights