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

Return flights

07 Sep - 13 Sep	Jeju Air
24 Sep - 22 Oct	Singapore Airlines
04 Sep - 08 Sep	KLM
25 Sep - 02 Oct	China Southern
24 Sep - 28 Sep	HK Express
03 Sep - 09 Sep	KLM
04 Sep - 07 Sep	KLM
04 Sep - 09 Sep	KLM
04 Sep - 10 Sep	KLM
01 Sep - 04 Sep	KLM
01 Sep - 08 Sep	KLM
17 Sep - 23 Sep	KLM
30 Sep - 06 Oct	KLM
30 Sep - 07 Oct	KLM
28 Sep - 26 Oct	Qatar Airways
25 Sep - 05 Oct	KLM
26 Sep - 05 Oct	KLM
28 Sep - 19 Oct	Japan Airlines
25 Sep - 04 Oct	KLM
30 Sep - 06 Oct	Finnair	direct

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 $948

Return flights