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

Return flights

04 Dec - 07 Dec	Norwegian Air Sweden AOC
11 Dec - 15 Dec	airBaltic
15 Dec - 21 Dec	airBaltic
13 Dec - 02 Jan	Ryanair
29 Dec - 05 Jan	airBaltic
16 Dec - 06 Jan	KLM
19 Dec - 05 Jan	airBaltic
22 Dec - 05 Jan	airBaltic
21 Dec - 05 Jan	airBaltic
23 Dec - 04 Jan	airBaltic
19 Dec - 04 Jan	airBaltic
24 Dec - 03 Jan	airBaltic
20 Dec - 05 Jan	Ryanair

Also check the deals for one-way flights from Helsinki to Bucharest 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 Bucharest in December from $166

Return flights