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

Return flights

19 Sep - 21 Sep	VietJet Air
17 Sep - 22 Sep	HK Express
17 Sep - 24 Sep	VietJet Air
18 Sep - 22 Sep	Cathay Pacific
18 Sep - 21 Sep	Thai AirAsia
09 Sep - 21 Sep	Thai AirAsia
08 Sep - 21 Sep	Thai AirAsia
19 Sep - 27 Sep	Thai AirAsia
16 Sep - 21 Sep	Thai AirAsia
11 Sep - 21 Sep	Thai AirAsia
23 Sep - 14 Oct	Thai AirAsia
19 Sep - 01 Oct	Thai AirAsia
18 Sep - 01 Oct	Thai AirAsia
24 Sep - 14 Oct	Thai AirAsia
30 Sep - 14 Oct	Thai AirAsia
30 Sep - 21 Oct	Thai AirAsia
28 Sep - 14 Oct	Thai AirAsia
23 Sep - 01 Oct	Thai AirAsia
16 Sep - 01 Oct	Thai AirAsia
11 Sep - 01 Oct	Thai AirAsia

Also check the deals for one-way flights from Hanoi to Kaohsiung in September.

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 September from 210€

Return flights