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

Return flights

08 Sep - 15 Sep	HK Express
13 Sep - 28 Sep	HK Express
13 Sep - 21 Sep	HK Express
20 Sep - 28 Sep	HK Express
06 Sep - 14 Sep	HK Express
05 Sep - 08 Sep	HK Express
20 Sep - 05 Oct	HK Express
27 Sep - 05 Oct	HK Express
29 Sep - 18 Oct	AirAsia

Also check the deals for one-way flights from Kaohsiung to Helsinki 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 Kaohsiung to Helsinki in September from $988

Return flights