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

Return flights

16 Dec - 17 Dec	Finnair	direct
09 Dec - 09 Dec	Finnair	direct
01 Dec - 01 Dec	Finnair	direct
15 Dec - 22 Dec	Finnair	direct
18 Dec - 21 Dec	Finnair	direct
27 Dec - 29 Dec	Finnair	direct
13 Dec - 14 Dec	Finnair	direct
04 Dec - 08 Dec	Finnair	direct
02 Dec - 05 Dec	Finnair	direct
27 Dec - 02 Jan	Finnair	direct
13 Dec - 13 Dec	Finnair	direct
28 Dec - 02 Jan	Finnair	direct
25 Dec - 01 Jan	Finnair	direct
29 Dec - 04 Jan	Finnair	direct
28 Dec - 03 Jan	Finnair	direct
29 Dec - 03 Jan	Finnair	direct

Also check the deals for one-way flights from Helsinki to Oulu 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 Oulu in December from 113€

Return flights