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

Return flights

21 Aug - 28 Aug	Ryanair
21 Aug - 30 Aug	Ryanair
29 Aug - 31 Aug	Norwegian Air Sweden AOC
18 Aug - 25 Aug	Ryanair
26 Aug - 29 Aug	Norwegian Air Sweden AOC
11 Aug - 25 Aug	Ryanair
21 Aug - 27 Aug	Ryanair
12 Aug - 03 Sep	Air France
26 Aug - 28 Aug	Ryanair
21 Aug - 01 Sep	Ryanair
25 Aug - 28 Aug	Scandinavian Airlines
18 Aug - 22 Aug	Ryanair
29 Aug - 02 Sep	Scandinavian Airlines
31 Aug - 07 Sep	airBaltic
31 Aug - 07 Sep	Finnair	direct

Also check the deals for one-way flights from Helsinki to Dublin 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 Helsinki to Dublin in August from 155€

Return flights