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

Return flights

08 Sep - 21 Oct	Japan Airlines
01 Sep - 07 Sep	Japan Airlines
26 Sep - 03 Oct	Xiamen Airlines
27 Sep - 05 Oct	Japan Airlines
02 Sep - 09 Sep	Japan Airlines
27 Sep - 04 Oct	Japan Airlines
28 Sep - 05 Oct	Xiamen Airlines
27 Sep - 10 Oct	China Eastern
26 Sep - 04 Oct	Japan Airlines
20 Sep - 28 Sep	Japan Airlines
11 Sep - 23 Sep	Japan Airlines
01 Sep - 08 Sep	Japan Airlines
09 Sep - 13 Sep	Japan Airlines
09 Sep - 19 Sep	Japan Airlines
25 Sep - 14 Oct	Japan Airlines
27 Sep - 14 Oct	Japan Airlines
26 Sep - 14 Oct	Japan Airlines
12 Sep - 23 Sep	Japan Airlines
10 Sep - 16 Sep	Shanghai Airlines
13 Sep - 16 Sep	Shanghai Airlines

Also check the deals for one-way flights from Taipei 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 Taipei to Helsinki in September from $1208

Return flights