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

Return flights

21 Dec - 08 Jan	Air China
24 Dec - 05 Jan	Air China
24 Dec - 29 Dec	Air China
21 Dec - 02 Jan	Air China
04 Dec - 11 Dec	Air China
21 Dec - 26 Dec	Air China
21 Dec - 01 Jan	Air China
24 Dec - 05 Jan	China Southern	direct
21 Dec - 08 Jan	China Southern	direct
23 Dec - 03 Jan	Air China
21 Dec - 03 Jan	Air China
21 Dec - 01 Jan	China Southern	direct
21 Dec - 03 Jan	China Southern	direct
24 Dec - 29 Dec	China Southern	direct
20 Dec - 27 Dec	AirAsia

Also check the deals for one-way flights from Shenzhen 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 Shenzhen to Sydney in December from $415

Return flights