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

Return flights

09 Sep - 12 Sep	Norwegian Air Sweden AOC
10 Sep - 12 Sep	Norwegian Air Sweden AOC
16 Sep - 19 Sep	Norwegian Air Sweden AOC
04 Sep - 06 Sep	Scandinavian Airlines
23 Sep - 26 Sep	Norwegian Air Sweden AOC
23 Sep - 30 Sep	Norwegian Air Sweden AOC
03 Sep - 05 Sep	Norwegian Air Sweden AOC
29 Sep - 30 Sep	Norwegian Air Sweden AOC
01 Sep - 03 Sep	Scandinavian Airlines
16 Sep - 21 Sep	airBaltic
27 Sep - 01 Oct	airBaltic
27 Sep - 08 Oct	airBaltic
27 Sep - 08 Oct	Finnair	direct

Also check the deals for one-way flights from Helsinki to Amsterdam 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 Amsterdam in September from 176€

Return flights