Cheapest return flights from Helsinki to Oslo in September from $95

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

Return flights

15 Sep - 22 Sep Norwegian direct
08 Sep - 09 Sep Norwegian direct
08 Sep - 17 Sep Norwegian direct
08 Sep - 15 Sep Norwegian direct
08 Sep - 22 Sep Norwegian direct
08 Sep - 16 Sep Norwegian direct
15 Sep - 17 Sep Norwegian direct
15 Sep - 16 Sep Norwegian direct
15 Sep - 06 Oct Norwegian direct
04 Sep - 17 Sep Norwegian direct
04 Sep - 22 Sep Norwegian direct
15 Sep - 01 Oct Norwegian direct
25 Sep - 06 Oct Norwegian direct
25 Sep - 15 Oct Norwegian direct
25 Sep - 13 Oct Norwegian direct
11 Sep - 01 Oct Norwegian direct
25 Sep - 01 Oct Norwegian direct
25 Sep - 12 Oct Norwegian direct
29 Sep - 06 Oct Norwegian direct
29 Sep - 15 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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