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

Return flights

12 Dec - 26 Dec	Norwegian	direct
12 Dec - 21 Dec	Norwegian
12 Dec - 21 Dec	Norwegian	direct
19 Dec - 26 Dec	Norwegian	direct
19 Dec - 21 Dec	Norwegian	direct
19 Dec - 04 Jan	Norwegian	direct
25 Dec - 04 Jan	Scandinavian Airlines
27 Dec - 02 Jan	Scandinavian Airlines
27 Dec - 03 Jan	Lufthansa

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

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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Cheapest return flights from Hamburg to Oslo in December from 131€

Return flights