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

Return flights

01 Dec - 09 Dec	AirAsia X
01 Dec - 11 Dec	AirAsia X
02 Dec - 09 Dec	AirAsia X
01 Dec - 13 Dec	Batik Air Malaysia
03 Dec - 16 Dec	Batik Air Malaysia
06 Dec - 15 Dec	Jetstar
10 Dec - 14 Dec	Jetstar
08 Dec - 29 Dec	Jetstar
09 Dec - 24 Dec	Batik Air Malaysia
05 Dec - 20 Dec	China Eastern
02 Dec - 17 Jan	China Eastern
29 Dec - 17 Jan	China Eastern
01 Dec - 02 Jan	China Eastern
06 Dec - 17 Jan	Jetstar
17 Dec - 01 Jan	China Eastern
31 Dec - 28 Jan	China Eastern
30 Dec - 24 Jan	China Eastern
16 Dec - 01 Jan	China Eastern
30 Dec - 18 Jan	China Eastern
25 Dec - 06 Jan	China Eastern

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

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 December from 508€

Return flights