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

Return flights

13 Aug - 20 Aug	Scandinavian Airlines
28 Aug - 29 Aug	Scandinavian Airlines
16 Aug - 22 Aug	Scandinavian Airlines
22 Aug - 24 Aug	Scandinavian Airlines
24 Aug - 26 Aug	airBaltic
27 Aug - 30 Aug	Scandinavian Airlines
15 Aug - 21 Aug	Scandinavian Airlines
24 Aug - 30 Aug	airBaltic
30 Aug - 09 Sep	Finnair
16 Aug - 20 Aug	Scandinavian Airlines
14 Aug - 17 Aug	Lufthansa

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

Return flights