Cheapest one-way flights from Oslo to Helsinki in May from 42€

AirHint found the following cheapest one-way flights from Oslo (OSL) to Helsinki (HEL) in May 2026 (see full year).

One-Way flights

05 May Norwegian direct
27 May Norwegian direct
26 May Ryanair
21 May Ryanair
19 May Norwegian direct
11 May Norwegian direct
25 May Norwegian direct
07 May airBaltic
30 May airBaltic
15 May airBaltic

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

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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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