Cheapest one-way flights from Helsinki to Oslo in September from $54

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

One-Way flights

24 Sep Norwegian direct
23 Sep Norwegian direct
16 Sep Norwegian direct
17 Sep Norwegian direct
30 Sep Norwegian direct
29 Sep Norwegian direct
22 Sep Norwegian Air Sweden AOC
25 Sep Norwegian Air Sweden AOC
27 Sep Scandinavian Airlines
11 Sep Norwegian direct

Also check the deals for return flights from Helsinki to Oslo 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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