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

Return flights

05 Dec - 30 Jan	Scandinavian Airlines
27 Dec - 23 Jan	China Eastern
25 Dec - 23 Jan	China Eastern
25 Dec - 16 Jan	China Eastern
25 Dec - 15 Jan	China Eastern
01 Dec - 15 Dec	Turkish Airlines
19 Dec - 13 Jan	Lufthansa
19 Dec - 07 Jan	Lufthansa
19 Dec - 09 Jan	Lufthansa
11 Dec - 18 Jan	Turkish Airlines
27 Dec - 17 Jan	Turkish Airlines
23 Dec - 30 Dec	Scandinavian Airlines
19 Dec - 31 Dec	Lufthansa
11 Dec - 20 Dec	Qatar Airways
03 Dec - 31 Dec	Emirates
08 Dec - 18 Dec	Qantas
17 Dec - 21 Dec	Qatar Airways
03 Dec - 13 Dec	Qantas
01 Dec - 14 Dec	Qantas
09 Dec - 18 Dec	Qantas

Also check the deals for one-way flights from Copenhagen to Sydney 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 Copenhagen to Sydney in December from $1063

Return flights