Cheapest return flights from Helsinki to Lisbon in September from $223

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

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

Return flights

23 Sep - 01 Oct Ryanair
17 Sep - 24 Sep Norwegian Air Sweden AOC
16 Sep - 20 Sep Ryanair
25 Sep - 29 Sep Ryanair
15 Sep - 22 Sep Norwegian Air Sweden AOC
29 Sep - 06 Oct Norwegian Air Sweden AOC
17 Sep - 21 Sep Norwegian Air Sweden AOC
08 Sep - 14 Sep Ryanair
14 Sep - 21 Sep Ryanair
09 Sep - 16 Sep Lufthansa
20 Sep - 21 Sep Ryanair
01 Sep - 07 Sep Ryanair

Also check the deals for one-way flights from Helsinki to Lisbon 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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