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

Return flights

31 Dec - 31 Jan	Ryanair
30 Dec - 13 Jan	Ryanair
31 Dec - 13 Jan	Ryanair
31 Dec - 11 Jan	Ryanair
30 Dec - 31 Jan	Ryanair
31 Dec - 12 Jan	Ryanair
29 Dec - 14 Jan	Ryanair
30 Dec - 11 Jan	Ryanair
30 Dec - 10 Jan	Ryanair
31 Dec - 09 Jan	Ryanair
26 Dec - 31 Dec	Ryanair
24 Dec - 30 Dec	Norwegian Air Sweden AOC
24 Dec - 31 Dec	KLM
23 Dec - 31 Dec	KLM
24 Dec - 29 Dec	Norwegian Air Sweden AOC
25 Dec - 31 Dec	Norwegian Air Sweden AOC
19 Dec - 21 Dec	Lufthansa
22 Dec - 25 Dec	Lufthansa
27 Dec - 31 Dec	Finnair
23 Dec - 30 Dec	Norwegian Air Sweden AOC

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

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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Cheapest return flights from Helsinki to Lisbon in December from 200€

Return flights