Cheapest return flights from Helsinki to Oslo in September from $92

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

Return flights

16 Sep - 24 Sep Norwegian direct
23 Sep - 24 Sep Norwegian direct
23 Sep - 08 Oct Norwegian direct
17 Sep - 24 Sep Norwegian direct
23 Sep - 06 Oct Norwegian
16 Sep - 22 Sep Norwegian direct
16 Sep - 06 Oct Norwegian direct
23 Sep - 13 Oct Norwegian direct
23 Sep - 09 Oct Norwegian direct
23 Sep - 06 Oct Norwegian direct
03 Sep - 24 Sep Norwegian direct
09 Sep - 24 Sep Norwegian direct
24 Sep - 15 Oct Norwegian direct
24 Sep - 08 Oct Norwegian direct
17 Sep - 08 Oct Norwegian direct
26 Sep - 01 Oct Finnair
16 Sep - 20 Sep Norwegian direct
16 Sep - 30 Sep Norwegian direct
23 Sep - 30 Sep Norwegian direct
09 Sep - 15 Sep 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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