Cheapest one-way flights from Helsinki to Oslo in September from 40€

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

04 Sep Norwegian direct
30 Sep Norwegian direct
26 Sep Norwegian direct
05 Sep Norwegian Air Sweden AOC
15 Sep Norwegian direct
17 Sep Norwegian direct
13 Sep Finnair
05 Sep Finnair direct
14 Sep Norwegian Air Sweden AOC
13 Sep Finnair 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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