Cheapest return flights from Lisbon to Helsinki in September from $193

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

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

Return flights

24 Sep - 30 Sep Vueling Airlines
17 Sep - 22 Sep Ryanair
25 Sep - 30 Sep Ryanair
23 Sep - 28 Sep Ryanair
26 Sep - 06 Oct Ryanair
04 Sep - 09 Sep Norwegian Air Sweden AOC
05 Sep - 07 Sep KLM
23 Sep - 28 Sep Finnair direct

Also check the deals for one-way 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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