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

Return flights

04 Dec - 08 Dec	Eurowings
07 Dec - 08 Dec	Ryanair
11 Dec - 15 Dec	Ryanair
04 Dec - 07 Dec	Ryanair
05 Dec - 08 Dec	Pegasus Airlines
11 Dec - 14 Dec	Ryanair
08 Dec - 15 Dec	Ryanair
08 Dec - 12 Dec	Ryanair
01 Dec - 06 Dec	Ryanair
07 Dec - 14 Dec	Ryanair
29 Dec - 01 Jan	Ryanair
28 Dec - 11 Jan	Ryanair
23 Dec - 01 Jan	Ryanair
28 Dec - 07 Jan	SunExpress
21 Dec - 06 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
31 Dec - 04 Jan	Eurowings
29 Dec - 05 Jan	Ryanair
23 Dec - 03 Jan	Ryanair
29 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Cologne 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 Cologne to Helsinki in December from 211€

Return flights