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

Return flights

25 Aug - 28 Aug	KLM
21 Aug - 27 Aug	KLM
21 Aug - 28 Aug	KLM
20 Aug - 22 Aug	easyJet
07 Aug - 11 Aug	easyJet
09 Aug - 11 Aug	KLM
04 Aug - 04 Aug	Aer Lingus
03 Aug - 04 Aug	Aer Lingus
01 Aug - 04 Aug	KLM
01 Aug - 08 Aug	KLM

Also check the deals for one-way flights from Belfast 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 Belfast to Helsinki in August from $326

Return flights