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

09 Sep Norwegian direct
24 Sep Norwegian direct
16 Sep Norwegian direct
01 Sep Norwegian direct
19 Sep Norwegian direct
30 Sep Norwegian direct
08 Sep Norwegian direct
17 Sep Norwegian direct
03 Sep Norwegian direct
02 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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