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

Return flights

12 Aug - 31 Aug	Air China
02 Aug - 24 Aug	Air China
09 Aug - 22 Aug	Air China
13 Aug - 29 Aug	Air China
24 Aug - 08 Sep	China Eastern
02 Aug - 26 Aug	Air China
02 Aug - 17 Aug	Air China
09 Aug - 24 Aug	Air China
23 Aug - 16 Sep	Air China
26 Aug - 03 Sep	Air India
22 Aug - 25 Aug	Air India
23 Aug - 19 Sep	Air India
18 Aug - 25 Aug	VietJet Air
05 Aug - 30 Aug	Air India
28 Aug - 04 Sep	Air China
27 Aug - 07 Sep	Etihad Airways
15 Aug - 19 Sep	Air China
28 Aug - 08 Sep	Thai Airways
27 Aug - 13 Sep	Thai Airways
21 Aug - 08 Sep	Air China

Also check the deals for one-way flights from Sydney to Copenhagen in August.

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 August from $838

Return flights