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

Return flights

18 Dec - 30 Dec	AirAsia
24 Dec - 31 Dec	VietJet Air
24 Dec - 30 Dec	VietJet Air
13 Dec - 16 Dec	Cathay Pacific
13 Dec - 17 Dec	Cathay Pacific
12 Dec - 17 Dec	Cathay Pacific
14 Dec - 17 Dec	Cathay Pacific
13 Dec - 14 Dec	Cathay Pacific
23 Dec - 10 Jan	VietJet Air
24 Dec - 29 Dec	VietJet Air
25 Dec - 13 Jan	VietJet Air
24 Dec - 28 Dec	VietJet Air
25 Dec - 10 Jan	VietJet Air
25 Dec - 12 Jan	VietJet Air
25 Dec - 01 Jan	AirAsia
30 Dec - 01 Jan	VietJet Air
31 Dec - 02 Jan	VietJet Air
30 Dec - 04 Jan	VietJet Air
28 Dec - 01 Jan	VietJet Air
30 Dec - 06 Jan	Thai AirAsia

Also check the deals for one-way flights from Kaohsiung to Singapore 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 Singapore in December from $317

Return flights