Cheapest return flights from Lisbon to Helsinki in September from 178€

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

Return flights

12 Sep - 15 Sep Ryanair
17 Sep - 24 Sep Ryanair
13 Sep - 20 Sep Ryanair
04 Sep - 08 Sep Norwegian Air Sweden AOC
19 Sep - 21 Sep Ryanair
12 Sep - 13 Sep Ryanair
17 Sep - 25 Sep Ryanair
03 Sep - 08 Sep Ryanair
03 Sep - 06 Sep Ryanair
14 Sep - 15 Sep Ryanair
30 Sep - 06 Oct Vueling Airlines
30 Sep - 06 Oct 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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