Cheapest return flights from Helsinki to Lisbon in September from $231

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

08 Sep - 11 Sep Ryanair
13 Sep - 18 Sep Ryanair
29 Sep - 06 Oct Ryanair
15 Sep - 20 Sep Ryanair
20 Sep - 04 Oct Ryanair
08 Sep - 12 Sep Ryanair
09 Sep - 12 Sep Ryanair
27 Sep - 04 Oct Ryanair
22 Sep - 27 Sep Ryanair
24 Sep - 01 Oct Norwegian Air Sweden AOC
09 Sep - 13 Sep Ryanair
22 Sep - 30 Sep Ryanair
10 Sep - 17 Sep Finnair
13 Sep - 20 Sep Ryanair
24 Sep - 01 Oct Finnair direct
27 Sep - 05 Oct Finnair direct

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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