Cheapest return flights from Helsinki to Lisbon in December from $318

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

Return flights

31 Dec - 13 Jan Lufthansa
31 Dec - 12 Jan KLM
31 Dec - 07 Jan KLM
31 Dec - 08 Jan Lufthansa
31 Dec - 11 Jan Finnair
30 Dec - 07 Jan Norwegian Air Sweden AOC
30 Dec - 10 Jan Lufthansa
30 Dec - 11 Jan Lufthansa
31 Dec - 06 Jan Finnair
31 Dec - 31 Dec Finnair
31 Dec - 13 Jan Finnair direct

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

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