AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in December 2026 (see full year).
One-Way flights
| 10 Dec | Norwegian | direct | |
| 14 Dec | Norwegian | direct | |
| 28 Dec | Norwegian | direct | |
| 31 Dec | Norwegian | direct | |
| 25 Dec | KLM | ||
| 25 Dec | Finnair | direct |
Also check the deals for return flights from Oslo to Helsinki in December.
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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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