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

Return flights

23 Aug - 29 Aug	Ryanair
28 Aug - 01 Sep	Ryanair
28 Aug - 31 Aug	Ryanair
21 Aug - 24 Aug	Ryanair
24 Aug - 27 Aug	Ryanair
27 Aug - 28 Aug	Ryanair
29 Aug - 14 Sep	Finnair	direct
29 Aug - 31 Aug	Ryanair
21 Aug - 04 Sep	Ryanair
29 Aug - 01 Sep	Ryanair
25 Aug - 02 Sep	airBaltic
30 Aug - 05 Sep	Ryanair
24 Aug - 06 Sep	Ryanair
26 Aug - 29 Aug	airBaltic
20 Aug - 26 Aug	airBaltic
19 Aug - 29 Aug	airBaltic
23 Aug - 26 Aug	airBaltic
29 Aug - 01 Sep	Finnair	direct
26 Aug - 02 Sep	airBaltic
30 Aug - 02 Sep	airBaltic

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Helsinki in August from 153€

Return flights