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

Return flights

01 Sep - 15 Sep	Norwegian Air Sweden AOC
08 Sep - 15 Sep	Norwegian Air Sweden AOC
02 Sep - 09 Sep	Norwegian Air Sweden AOC
04 Sep - 17 Sep	Norwegian Air Sweden AOC
05 Sep - 18 Sep	Norwegian Air Sweden AOC
01 Sep - 08 Sep	Ryanair
11 Sep - 18 Sep	Air France
02 Sep - 10 Sep	Etihad Airways
03 Sep - 17 Sep	KLM
03 Sep - 16 Sep	KLM
23 Sep - 07 Oct	KLM
17 Sep - 08 Oct	KLM
28 Sep - 10 Oct	Juneyao Airlines
02 Sep - 02 Oct	KLM
26 Sep - 04 Oct	Etihad Airways
16 Sep - 02 Oct	KLM
28 Sep - 10 Oct	Japan Airlines	direct
19 Sep - 09 Oct	KLM
26 Sep - 27 Oct	KLM
26 Sep - 10 Oct	KLM

Also check the deals for one-way flights from Helsinki to Tokyo 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 Helsinki to Tokyo in September from $813

Return flights