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

Return flights

01 Dec - 08 Dec	China Southern
04 Dec - 08 Dec	Cathay Pacific
06 Dec - 27 Dec	China Southern
10 Dec - 17 Dec	Hong Kong Airlines
30 Dec - 11 Jan	China Southern
30 Dec - 14 Jan	China Southern
06 Dec - 08 Jan	Hainan Airlines	direct
13 Dec - 28 Dec	China Southern
30 Dec - 29 Jan	Air China
13 Dec - 27 Jan	Scoot
10 Dec - 10 Jan	Hong Kong Airlines
28 Dec - 10 Jan	China Southern
19 Dec - 30 Dec	China Southern
19 Dec - 28 Dec	VietJet Air
20 Dec - 30 Dec	Jetstar
19 Dec - 29 Dec	VietJet Air
14 Dec - 12 Jan	Hong Kong Airlines
24 Dec - 03 Jan	Hong Kong Airlines
09 Dec - 10 Jan	China Southern

Also check the deals for one-way flights from Sydney to Haikou 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 Haikou in December from 706€

Return flights