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

Return flights

05 Sep - 20 Sep	Air China
15 Sep - 18 Sep	Singapore Airlines
16 Sep - 23 Sep	Singapore Airlines
28 Sep - 06 Oct	Singapore Airlines
23 Sep - 30 Sep	KLM
23 Sep - 28 Sep	Singapore Airlines
24 Sep - 28 Sep	Singapore Airlines
09 Sep - 15 Sep	KLM
25 Sep - 30 Sep	KLM
24 Sep - 29 Sep	KLM
07 Sep - 17 Sep	Qatar Airways
17 Sep - 19 Oct	KLM
16 Sep - 19 Oct	KLM
19 Sep - 19 Oct	KLM
28 Sep - 06 Oct	Japan Airlines	direct
20 Sep - 19 Oct	KLM
26 Sep - 04 Oct	Finnair	direct
16 Sep - 19 Oct	Finnair	direct
24 Sep - 01 Oct	Japan Airlines
20 Sep - 04 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 $993

Return flights