Cheapest return flights from Oslo to Helsinki in September from 103€

AirHint found the following cheapest return flights from Oslo (OSL) to Helsinki (HEL) in September 2026 (see full year).

Return flights

21 Sep - 25 Sep Norwegian direct
13 Sep - 14 Sep Norwegian direct
13 Sep - 15 Sep Norwegian direct
13 Sep - 25 Sep Norwegian direct
07 Sep - 14 Sep Norwegian direct
07 Sep - 10 Sep Norwegian direct
07 Sep - 15 Sep Norwegian direct
07 Sep - 25 Sep Norwegian direct
23 Sep - 25 Sep Norwegian direct
21 Sep - 01 Oct Norwegian direct
13 Sep - 01 Oct Norwegian direct
23 Sep - 01 Oct Norwegian direct
07 Sep - 20 Sep airBaltic
28 Sep - 01 Oct Norwegian direct
25 Sep - 01 Oct Norwegian direct

Also check the deals for one-way flights from Oslo to Helsinki in September.

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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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