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

Return flights

05 Dec - 07 Dec	Ryanair
15 Dec - 19 Dec	Ryanair
01 Dec - 05 Jan	Ryanair
24 Dec - 05 Jan	Lufthansa
30 Dec - 31 Dec	Ryanair
24 Dec - 02 Jan	Lufthansa
23 Dec - 04 Jan	Ryanair
20 Dec - 28 Dec	Air Dolomiti
21 Dec - 28 Dec	Air Dolomiti
27 Dec - 28 Dec	Lufthansa
30 Dec - 01 Jan	Luxair
18 Dec - 02 Jan	easyJet
22 Dec - 02 Jan	Lufthansa
20 Dec - 02 Jan	Air Dolomiti
20 Dec - 23 Dec	KLM
19 Dec - 02 Jan	Lufthansa
23 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Luxemburg to Helsinki 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 Luxemburg to Helsinki in December from 156€

Return flights