Cheapest return flights from Porto to Helsinki in May from $259

Best time to book flights for Porto (OPO) to Helsinki (HEL) flights at AirHint

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

Return flights

14 May - 18 May Scandinavian Airlines
02 May - 10 May Scandinavian Airlines
04 May - 10 May Ryanair

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

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.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki