Cheapest one-way flights from Helsinki to Oslo in September from $45

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

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

One-Way flights

02 Sep Norwegian direct
04 Sep Norwegian direct
30 Sep Norwegian direct
03 Sep Norwegian direct
17 Sep Norwegian direct
18 Sep Norwegian direct
24 Sep Norwegian direct
22 Sep airBaltic
15 Sep airBaltic
12 Sep airBaltic

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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