Cheapest one-way flights from Oslo to Helsinki in September from 51€

AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in September 2026 (see full year).

One-Way flights

11 Sep Norwegian direct
20 Sep Norwegian direct
24 Sep Norwegian direct
24 Sep airBaltic

Also check the deals for return flights from Oslo to Helsinki 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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