Cheapest return flights from Helsinki to Oslo in September from $84

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

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

Return flights

18 Sep - 22 Sep Norwegian direct
02 Sep - 22 Sep Norwegian direct
02 Sep - 23 Sep Norwegian direct
02 Sep - 16 Sep Norwegian direct
03 Sep - 22 Sep Norwegian direct
03 Sep - 23 Sep Norwegian direct
03 Sep - 16 Sep Norwegian direct
10 Sep - 22 Sep Norwegian direct
10 Sep - 23 Sep Norwegian direct
10 Sep - 16 Sep Norwegian direct
10 Sep - 01 Oct Norwegian direct
16 Sep - 01 Oct Norwegian direct
16 Sep - 06 Oct Norwegian direct
18 Sep - 01 Oct Norwegian direct
18 Sep - 08 Oct Norwegian direct
18 Sep - 06 Oct Norwegian direct
17 Sep - 01 Oct Norwegian direct
17 Sep - 08 Oct Norwegian direct
17 Sep - 06 Oct Norwegian direct
24 Sep - 01 Oct Norwegian direct

Also check the deals for one-way 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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