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

Return flights

03 Dec - 16 Jan	Turkish Airlines
27 Dec - 31 Dec	Turkish Airlines
10 Dec - 05 Jan	Air China
25 Dec - 07 Jan	Turkish Airlines
24 Dec - 08 Jan	Turkish Airlines
28 Dec - 10 Jan	Turkish Airlines
05 Dec - 20 Dec	Air China
21 Dec - 04 Jan	Air China
12 Dec - 10 Jan	Air China
21 Dec - 06 Jan	Air China
14 Dec - 27 Dec	Finnair
17 Dec - 06 Jan	Turkish Airlines
05 Dec - 12 Dec	Emirates
11 Dec - 23 Dec	Virgin Australia
16 Dec - 03 Jan	Turkish Airlines
19 Dec - 26 Dec	Finnair

Also check the deals for one-way flights from Sydney to Copenhagen 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 Copenhagen in December from 1173€

Return flights