Cheapest return flights from Sydney to Colombo in September from $590

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

Return flights

05 Sep - 12 Sep AirAsia X
02 Sep - 13 Sep AirAsia X
02 Sep - 19 Sep AirAsia X
17 Sep - 01 Oct AirAsia X
19 Sep - 19 Oct AirAsia X
16 Sep - 28 Oct Cathay Pacific
30 Sep - 20 Oct AirAsia X
03 Sep - 09 Sep Cathay Pacific
25 Sep - 20 Oct AirAsia X
04 Sep - 07 Sep Cathay Pacific
16 Sep - 31 Oct Cathay Pacific
30 Sep - 24 Oct AirAsia X
24 Sep - 01 Oct VietJet Air
28 Sep - 01 Oct AirAsia X
23 Sep - 01 Oct AirAsia X
02 Sep - 12 Sep SriLankan Airlines direct
07 Sep - 09 Sep SriLankan Airlines direct
16 Sep - 19 Sep SriLankan Airlines direct
06 Sep - 09 Sep SriLankan Airlines direct
02 Sep - 06 Sep SriLankan Airlines direct

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

Skyscanner

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 Colombo

Cheap car rent in Colombo

Feel free to contact us with any feedback or request another flight research.