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

Return flights

02 Dec - 23 Dec	Batik Air Malaysia
08 Dec - 26 Dec	Batik Air Malaysia
11 Dec - 14 Dec	Jetstar
02 Dec - 19 Dec	Scoot
12 Dec - 20 Dec	Batik Air Malaysia
13 Dec - 20 Dec	Jetstar
03 Dec - 26 Jan	Batik Air Malaysia
05 Dec - 21 Dec	AirAsia X
02 Dec - 11 Dec	AirAsia X
02 Dec - 06 Dec	AirAsia X
02 Dec - 16 Dec	AirAsia X
10 Dec - 21 Jan	Batik Air Malaysia
11 Dec - 22 Jan	China Eastern
11 Dec - 21 Jan	Jetstar
05 Dec - 10 Jan	Batik Air Malaysia
01 Dec - 02 Jan	Jetstar
24 Dec - 06 Jan	China Eastern
30 Dec - 11 Jan	China Eastern
17 Dec - 04 Jan	Jetstar
24 Dec - 01 Jan	Jetstar

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 532€

Return flights