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

Return flights

22 Dec - 04 Jan	Jetstar Japan
31 Dec - 13 Jan	Asiana Airlines
29 Dec - 03 Jan	Jetstar Japan
22 Dec - 06 Jan	AirAsia X
29 Dec - 04 Jan	Jetstar Japan
23 Dec - 06 Jan	AirAsia X
22 Dec - 27 Dec	Scoot
25 Dec - 30 Dec	VietJet Air
23 Dec - 30 Dec	VietJet Air
21 Dec - 05 Jan	Malaysia Airlines
22 Dec - 28 Dec	T'way Air
21 Dec - 01 Jan	Scoot
21 Dec - 04 Jan	Hong Kong Airlines
22 Dec - 25 Dec	AirAsia X
22 Dec - 02 Jan	Malaysia Airlines
21 Dec - 25 Dec	Scoot
26 Dec - 27 Dec	Malaysia Airlines
21 Dec - 25 Dec	Jetstar	direct
22 Dec - 28 Dec	Jetstar	direct
22 Dec - 25 Dec	Jetstar	direct

Also check the deals for one-way flights from Osaka to Sydney 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 Osaka to Sydney in December from $781

Return flights