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

Return flights

04 Dec - 31 Dec	Air China
23 Dec - 31 Dec	Air China
21 Dec - 01 Jan	Hainan Airlines
21 Dec - 05 Jan	Hainan Airlines
24 Dec - 01 Jan	Air China
19 Dec - 27 Dec	Air China
14 Dec - 22 Dec	Air China
24 Dec - 03 Jan	Hainan Airlines
20 Dec - 04 Jan	AirAsia
21 Dec - 05 Jan	China Southern	direct
21 Dec - 01 Jan	China Southern	direct
24 Dec - 03 Jan	China Southern	direct
24 Dec - 01 Jan	China Southern	direct
19 Dec - 27 Dec	China Southern	direct
14 Dec - 22 Dec	China Southern	direct
12 Dec - 21 Dec	AirAsia
13 Dec - 21 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 459€

Return flights