AirHint found the following cheapest return flights from Dortmund (DTM) to Helsinki (HEL) in August 2025 (see full year).

Return flights

31 Aug - 02 Sep	Wizz Air
31 Aug - 03 Sep	Wizz Air
24 Aug - 31 Aug	Wizz Air
17 Aug - 22 Aug	Wizz Air
29 Aug - 02 Sep	Wizz Air
27 Aug - 29 Aug	Wizz Air
30 Aug - 02 Sep	Wizz Air
07 Aug - 11 Aug	Wizz Air
14 Aug - 21 Aug	Wizz Air
05 Aug - 08 Aug	Wizz Air
08 Aug - 11 Aug	Wizz Air

Also check the deals for one-way flights from Dortmund to Helsinki in August.

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 Dortmund to Helsinki in August from $233

Return flights