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

Return flights

31 Aug - 14 Sep	Ryanair
31 Aug - 09 Sep	easyJet
31 Aug - 11 Sep	easyJet
31 Aug - 01 Sep	Ryanair
31 Aug - 03 Sep	easyJet
28 Aug - 03 Sep	Ryanair
28 Aug - 01 Sep	Ryanair
28 Aug - 08 Sep	easyJet
26 Aug - 12 Sep	Lufthansa
31 Aug - 08 Sep	easyJet
27 Aug - 31 Aug	Ryanair
25 Aug - 29 Aug	Ryanair
22 Aug - 26 Aug	Scandinavian Airlines
26 Aug - 31 Aug	Lufthansa
21 Aug - 23 Aug	Lufthansa	direct
23 Aug - 26 Aug	Lufthansa	direct
22 Aug - 26 Aug	Lufthansa	direct
23 Aug - 27 Aug	Lufthansa	direct
22 Aug - 27 Aug	Lufthansa	direct
21 Aug - 27 Aug	Lufthansa	direct

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 192€

Return flights