Cheapest one-way flights from Oslo to Helsinki in August from $54

AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in August 2025 (see full year).

One-Way flights

20 Aug Norwegian direct
05 Aug Norwegian direct
18 Aug Norwegian direct
19 Aug Norwegian direct
27 Aug Ryanair
14 Aug Norwegian direct
15 Aug Ryanair
23 Aug Ryanair
11 Aug Norwegian direct
28 Aug Ryanair

Also check the deals for return flights from Oslo to Helsinki in August.

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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