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

Return flights

23 Oct - 27 Oct	Hong Kong Airlines
22 Oct - 25 Oct	Hong Kong Airlines
21 Oct - 24 Oct	Hong Kong Airlines
07 Oct - 14 Oct	Jetstar Japan
06 Oct - 13 Oct	Jetstar Japan
18 Oct - 26 Oct	Hong Kong Airlines
27 Oct - 02 Nov	AirAsia X
21 Oct - 28 Oct	Cathay Pacific
15 Oct - 19 Oct	AirAsia X
15 Oct - 02 Nov	AirAsia X
31 Oct - 02 Nov	AirAsia X
24 Oct - 02 Nov	AirAsia X
21 Oct - 22 Oct	Jetstar Japan
06 Oct - 19 Oct	AirAsia X

Also check the deals for one-way flights from Sapporo to Sydney 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 Sapporo to Sydney in October from 558€

Return flights