Cheapest one-way flights from Oslo to Helsinki in September from 42€

Best time to book flights for Oslo (OSL) to Helsinki (HEL) flights at AirHint

AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in September 2025 (see full year).

One-Way flights

18 Sep Norwegian direct
17 Sep Norwegian direct
14 Sep Norwegian direct
26 Sep Finnair
26 Sep Norwegian direct
07 Sep Wizz Air
07 Sep Finnair direct

Also check the deals for return flights from Oslo to Helsinki in September.

Skyscanner

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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