Cheapest return flights from Oslo to Helsinki in December from 114€

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

Return flights

28 Dec - 08 Jan Norwegian direct
04 Dec - 18 Dec Norwegian direct
01 Dec - 18 Dec Norwegian direct
04 Dec - 07 Dec Norwegian direct
01 Dec - 07 Dec Norwegian direct
28 Dec - 01 Jan Norwegian direct
05 Dec - 18 Dec Norwegian direct
04 Dec - 22 Dec Norwegian
01 Dec - 22 Dec Norwegian
04 Dec - 15 Dec Norwegian direct
01 Dec - 15 Dec Norwegian direct
04 Dec - 22 Dec Norwegian direct
28 Dec - 02 Jan Norwegian direct
28 Dec - 05 Jan Norwegian
28 Dec - 06 Jan Norwegian
25 Dec - 01 Jan airBaltic
25 Dec - 01 Jan Finnair direct

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

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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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