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

Return flights

01 Dec - 06 Dec	Qantas
03 Dec - 10 Dec	Qantas
01 Dec - 10 Dec	Qantas
01 Dec - 12 Dec	Qantas
10 Dec - 15 Dec	Qantas
10 Dec - 14 Dec	Qantas
09 Dec - 13 Dec	Qantas
07 Dec - 22 Jan	Qantas
30 Dec - 31 Jan	Malaysia Airlines
12 Dec - 29 Dec	Singapore Airlines
15 Dec - 20 Dec	Qantas
29 Dec - 19 Jan	Qantas
25 Dec - 04 Jan	Qantas
26 Dec - 05 Jan	Malaysia Airlines
27 Dec - 10 Jan	Qantas
12 Dec - 02 Jan	Singapore Airlines
21 Dec - 03 Jan	Cathay Pacific
21 Dec - 02 Jan	Qantas
25 Dec - 21 Jan	Emirates
19 Dec - 26 Dec	Qantas

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 977€

Return flights