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

Return flights

04 Jan - 22 Jan	Norwegian	direct
04 Jan - 15 Jan	Norwegian	direct
01 Jan - 15 Jan	Norwegian	direct
15 Jan - 22 Jan	Norwegian	direct
18 Jan - 22 Jan	Norwegian	direct
08 Jan - 22 Jan	Norwegian	direct
08 Jan - 15 Jan	Norwegian	direct
02 Jan - 22 Jan	Norwegian	direct
02 Jan - 15 Jan	Norwegian	direct
11 Jan - 22 Jan	Norwegian	direct
25 Jan - 08 Feb	Norwegian	direct
18 Jan - 08 Feb	Norwegian Air Sweden AOC

Also check the deals for one-way 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 return flights from Oslo to Helsinki in January from $112

Return flights