AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in March 2026 (see full year).
One-Way flights
| 13 Mar | Norwegian | direct | |
| 20 Mar | Norwegian | direct | |
| 09 Mar | airBaltic | ||
| 19 Mar | Norwegian | direct | |
| 19 Mar | airBaltic | ||
| 31 Mar | airBaltic | ||
| 24 Mar | airBaltic | ||
| 25 Mar | airBaltic | ||
| 01 Mar | airBaltic | ||
| 11 Mar | airBaltic |
Also check the deals for return flights from Oslo to Helsinki in March.
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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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