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

Return flights

16 Dec - 11 Jan	airBaltic
16 Dec - 08 Jan	airBaltic
08 Dec - 10 Dec	airBaltic
11 Dec - 15 Dec	airBaltic
08 Dec - 11 Dec	airBaltic
28 Dec - 31 Dec	airBaltic
09 Dec - 10 Dec	airBaltic
08 Dec - 16 Dec	airBaltic
09 Dec - 11 Dec	airBaltic
17 Dec - 04 Jan	airBaltic
17 Dec - 05 Jan	airBaltic
31 Dec - 04 Jan	airBaltic
31 Dec - 05 Jan	airBaltic
30 Dec - 02 Jan	airBaltic
30 Dec - 05 Jan	airBaltic
28 Dec - 02 Jan	airBaltic
31 Dec - 06 Jan	airBaltic
11 Dec - 12 Dec	airBaltic
14 Dec - 15 Dec	Scandinavian Airlines
10 Dec - 12 Dec	airBaltic

Also check the deals for one-way flights from Helsinki to Copenhagen 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 Copenhagen in December from 100€

Return flights