AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in January 2026 (see full year).

One-Way flights

08 Jan	Norwegian	direct
15 Jan	Norwegian	direct
11 Jan	Norwegian	direct
10 Jan	airBaltic
07 Jan	airBaltic
14 Jan	airBaltic
17 Jan	Scandinavian Airlines
10 Jan	Finnair	direct
07 Jan	Finnair	direct
03 Jan	Finnair	direct

Also check the deals for return flights from Oslo to Helsinki in January.

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 one-way flights from Oslo to Helsinki in January from 47€

One-Way flights