Cheapest return flights from Oslo to Helsinki in December from $172

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

Return flights

31 Dec - 08 Jan airBaltic
28 Dec - 15 Jan Norwegian direct
29 Dec - 15 Jan Norwegian direct
28 Dec - 08 Jan Norwegian direct
28 Dec - 11 Jan Norwegian direct
29 Dec - 18 Jan Norwegian direct
29 Dec - 08 Jan Norwegian direct
29 Dec - 11 Jan Norwegian direct
26 Dec - 15 Jan Norwegian direct
29 Dec - 05 Jan Norwegian
28 Dec - 30 Dec Norwegian direct
26 Dec - 28 Dec Finnair
28 Dec - 29 Dec Norwegian
26 Dec - 28 Dec Finnair direct
25 Dec - 29 Dec Scandinavian Airlines
29 Dec - 31 Dec Norwegian
25 Dec - 29 Dec Finnair direct
25 Dec - 27 Dec Finnair
25 Dec - 27 Dec Finnair direct
26 Dec - 31 Dec Norwegian

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

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