Cheapest one-way flights from Lisbon to Helsinki in September from $128

Best time to book flights for Lisbon (LIS) to Helsinki (HEL) flights at AirHint

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

One-Way flights

04 Sep Ryanair
04 Sep Finnair direct

Also check the deals for return flights from Lisbon to Helsinki 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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