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

Return flights

06 Sep - 19 Sep	Sichuan Airlines
01 Sep - 07 Sep	Qatar Airways
10 Sep - 16 Sep	KLM
04 Sep - 09 Sep	Qatar Airways
25 Sep - 29 Sep	KLM
05 Sep - 09 Sep	Qatar Airways
24 Sep - 30 Sep	KLM
06 Sep - 10 Sep	KLM
08 Sep - 15 Sep	KLM
11 Sep - 16 Sep	KLM
30 Sep - 05 Oct	KLM
25 Sep - 05 Oct	KLM
30 Sep - 04 Oct	KLM
29 Sep - 04 Oct	KLM
24 Sep - 14 Oct	KLM
28 Sep - 05 Oct	KLM
28 Sep - 04 Oct	KLM
30 Sep - 03 Oct	Turkish Airlines
27 Sep - 04 Oct	Turkish Airlines
27 Sep - 02 Oct	Japan Airlines

Also check the deals for one-way flights from Tokyo 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 Tokyo to Helsinki in September from 858€

Return flights