Cheapest one-way flights from Oslo to Helsinki in September from $34

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

One-Way flights

16 Sep Norwegian direct
22 Sep Norwegian direct
24 Sep Norwegian direct
17 Sep Norwegian direct
02 Sep Norwegian direct
11 Sep Norwegian direct
01 Sep Norwegian direct
04 Sep Norwegian Air Sweden AOC
30 Sep Norwegian direct
14 Sep Norwegian 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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