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

Return flights

05 Dec - 07 Dec	VietJet Air	direct
01 Dec - 08 Dec	VietJet Air
03 Dec - 06 Dec	Thai AirAsia
05 Dec - 06 Dec	Thai AirAsia
03 Dec - 15 Dec	Thai AirAsia
01 Dec - 02 Dec	Thai AirAsia
03 Dec - 05 Dec	Thai AirAsia
03 Dec - 11 Dec	Thai AirAsia
06 Dec - 15 Dec	Thai AirAsia
01 Dec - 06 Dec	Thai AirAsia
18 Dec - 08 Jan	Thai AirAsia
25 Dec - 13 Jan	Thai AirAsia
25 Dec - 12 Jan	Thai AirAsia
17 Dec - 04 Jan	Thai AirAsia
25 Dec - 08 Jan	Thai AirAsia
25 Dec - 15 Jan	Thai AirAsia
19 Dec - 08 Jan	Thai AirAsia
15 Dec - 04 Jan	Thai AirAsia
18 Dec - 04 Jan	Thai AirAsia
30 Dec - 13 Jan	Thai AirAsia

Also check the deals for one-way flights from Hanoi to Kaohsiung 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 Hanoi to Kaohsiung in December from 155€

Return flights