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

Return flights

01 Dec - 15 Dec	Scoot
03 Dec - 06 Dec	Batik Air Malaysia
02 Dec - 16 Dec	Scoot
02 Dec - 30 Dec	Scoot
15 Dec - 11 Jan	Air China
17 Dec - 29 Dec	Air China
09 Dec - 30 Dec	Jetstar
26 Dec - 10 Jan	Air China
15 Dec - 04 Jan	Air China
15 Dec - 10 Jan	Air China
01 Dec - 15 Jan	Air China
14 Dec - 28 Dec	Air China
12 Dec - 16 Jan	Jetstar
02 Dec - 15 Dec	Air China
09 Dec - 23 Dec	Air China
26 Dec - 11 Jan	Air China
01 Dec - 18 Dec	Batik Air Malaysia
11 Dec - 11 Jan	Virgin Australia
12 Dec - 11 Jan	Air China
15 Dec - 12 Jan	Air China

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 860€

Return flights