Cheapest return flights from Helsinki to Oslo in September from 78€

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

04 Sep - 09 Sep Norwegian direct
04 Sep - 15 Sep Norwegian direct
30 Sep - 06 Oct Norwegian direct
30 Sep - 08 Oct Norwegian direct
26 Sep - 06 Oct Norwegian direct
26 Sep - 08 Oct Norwegian direct
18 Sep - 06 Oct Norwegian direct
18 Sep - 08 Oct Norwegian direct
30 Sep - 16 Oct Norwegian direct
26 Sep - 16 Oct Norwegian direct
04 Sep - 17 Sep Norwegian direct
26 Sep - 28 Sep Norwegian direct
18 Sep - 28 Sep Norwegian direct
26 Sep - 29 Sep Norwegian direct
30 Sep - 17 Oct Norwegian direct
30 Sep - 03 Oct Norwegian direct
27 Sep - 29 Sep Norwegian Air Sweden AOC
04 Sep - 25 Sep Norwegian direct
18 Sep - 25 Sep Norwegian direct
18 Sep - 29 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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