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

Return flights

10 Dec - 16 Dec	Qantas
11 Dec - 15 Dec	Qantas
10 Dec - 31 Dec	Qantas
06 Dec - 30 Dec	Qantas
10 Dec - 30 Dec	Qantas
01 Dec - 06 Dec	Qantas
12 Dec - 16 Dec	Qantas
23 Dec - 10 Jan	Indonesia AirAsia
12 Dec - 15 Dec	Qantas
31 Dec - 20 Jan	Cathay Pacific
13 Dec - 16 Dec	Qantas
17 Dec - 30 Dec	Cathay Pacific
06 Dec - 14 Jan	Qantas
31 Dec - 14 Jan	Qantas
31 Dec - 21 Jan	Qantas
12 Dec - 14 Jan	Qantas
13 Dec - 14 Jan	Qantas
13 Dec - 15 Jan	Qantas
17 Dec - 09 Jan	Qantas
25 Dec - 21 Jan	Emirates

Also check the deals for one-way flights from Adelaide 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 Adelaide to Colombo in December from $1128

Return flights