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

Return flights

23 Oct - 09 Nov	Air China
26 Oct - 08 Nov	China Eastern
18 Oct - 30 Oct	Air China
29 Oct - 12 Nov	Qantas
12 Oct - 23 Oct	Air China
07 Oct - 11 Nov	Singapore Airlines
15 Oct - 22 Oct	Qantas
03 Oct - 04 Nov	Turkish Airlines
28 Oct - 04 Nov	Turkish Airlines
31 Oct - 19 Nov	Turkish Airlines
13 Oct - 28 Oct	Singapore Airlines
13 Oct - 09 Nov	Virgin Australia
05 Oct - 01 Nov	Turkish Airlines
01 Oct - 30 Nov	Virgin Australia
05 Oct - 12 Oct	Cebu Pacific
03 Oct - 16 Oct	Singapore Airlines

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

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 October from 746€

Return flights