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

Return flights

02 Dec - 17 Dec	Jetstar
04 Dec - 14 Dec	Jetstar	direct
02 Dec - 17 Dec	Jetstar	direct
01 Dec - 15 Dec	Jetstar
01 Dec - 17 Dec	Jetstar
08 Dec - 14 Dec	Jetstar
02 Dec - 16 Dec	Jetstar
02 Dec - 19 Dec	Jetstar	direct
09 Dec - 15 Dec	Jetstar
12 Dec - 14 Dec	Jetstar
25 Dec - 05 Jan	Jetstar
30 Dec - 23 Jan	Scoot
31 Dec - 20 Jan	Scoot
30 Dec - 20 Jan	Scoot
21 Dec - 04 Jan	Jetstar
30 Dec - 02 Jan	AirAsia X
29 Dec - 14 Jan	Cathay Pacific
29 Dec - 12 Jan	Cathay Pacific
22 Dec - 04 Jan	Jetstar
25 Dec - 07 Jan	Cathay Pacific

Also check the deals for one-way flights from Sydney to Osaka 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 Osaka in December from $603

Return flights