Cheapest return flights from Helsinki to Porto in September from $207

AirHint found the following cheapest return flights from Helsinki (HEL) to Porto (OPO) in September 2025 (see full year).

Return flights

08 Sep - 21 Sep Ryanair
22 Sep - 28 Sep Ryanair
08 Sep - 11 Sep Ryanair
08 Sep - 13 Sep Ryanair
10 Sep - 17 Sep Ryanair
01 Sep - 06 Sep Ryanair
05 Sep - 11 Sep Ryanair
20 Sep - 27 Sep Ryanair
27 Sep - 04 Oct Ryanair
28 Sep - 30 Sep Ryanair
08 Sep - 14 Sep Ryanair

Also check the deals for one-way flights from Helsinki to Porto in September.

Skyscanner

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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