AirHint found the following cheapest one-way flights from Helsinki (HEL) to Oslo (OSL) in September 2026 (see full year).
One-Way flights
| 01 Sep | Norwegian | direct | |
| 25 Sep | Norwegian | direct | |
| 30 Sep | Norwegian | direct | |
| 10 Sep | Norwegian | direct | |
| 12 Sep | Ryanair | ||
| 04 Sep | Norwegian | direct | |
| 06 Sep | Finnair | direct | |
| 12 Sep | Finnair | direct |
Also check the deals for return flights from Helsinki to Oslo in September.
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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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