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

Return flights

25 Dec - 06 Jan	VietJet Air
25 Dec - 14 Jan	AirAsia
25 Dec - 12 Jan	AirAsia
25 Dec - 09 Jan	AirAsia
25 Dec - 02 Jan	VietJet Air
25 Dec - 03 Jan	Philippines AirAsia Inc.
24 Dec - 04 Jan	Vietnam Airlines
23 Dec - 03 Jan	Philippines AirAsia Inc.
31 Dec - 04 Jan	Cathay Pacific
30 Dec - 03 Jan	Philippines AirAsia Inc.
24 Dec - 28 Dec	Vietnam Airlines
04 Dec - 17 Dec	AirAsia
08 Dec - 17 Dec	AirAsia
04 Dec - 21 Dec	AirAsia
08 Dec - 21 Dec	AirAsia
04 Dec - 24 Dec	AirAsia
08 Dec - 24 Dec	AirAsia
24 Dec - 31 Dec	Cathay Pacific

Also check the deals for one-way flights from Kaohsiung 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 Kaohsiung to Sydney in December from $725

Return flights