Cheapest one-way flights from Oslo to Helsinki in September from $47

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

One-Way flights

15 Sep Norwegian direct
09 Sep Norwegian direct
10 Sep Norwegian direct
01 Sep Norwegian direct
24 Sep Norwegian direct
16 Sep Norwegian direct
02 Sep Norwegian direct
04 Sep Norwegian direct
11 Sep Norwegian direct
06 Sep Ryanair

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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