AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in December 2025 (see full year).
One-Way flights
| 08 Dec | Norwegian | direct | |
| 10 Dec | airBaltic | ||
| 31 Dec | airBaltic | ||
| 04 Dec | airBaltic | ||
| 03 Dec | airBaltic | ||
| 05 Dec | airBaltic | ||
| 25 Dec | airBaltic | ||
| 29 Dec | airBaltic | ||
| 02 Dec | airBaltic | ||
| 06 Dec | airBaltic |
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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