AirHint found the following cheapest one-way flights from Barcelona (BCN) to Helsinki (HEL) in September 2025 (see full year).

One-Way flights

03 Sep	Vueling Airlines
15 Sep	Wizz Air Malta
08 Sep	Ryanair
11 Sep	Ryanair
01 Sep	Vueling Airlines
23 Sep	Ryanair
01 Sep	Norwegian Air Sweden AOC	direct
04 Sep	Norwegian Air Sweden AOC	direct
05 Sep	Norwegian Air Sweden AOC	direct
11 Sep	Norwegian Air Sweden AOC	direct

Also check the deals for return flights from Barcelona to Helsinki in September.

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 one-way flights from Barcelona to Helsinki in September from 58€

One-Way flights