AirHint found the following cheapest return flights from Oslo (OSL) to Copenhagen (CPH) in March 2026 (see full year).

Return flights

02 Mar - 02 Mar	Norwegian	direct
31 Mar - 18 Apr	Norwegian	direct
02 Mar - 09 Mar	Norwegian	direct
09 Mar - 09 Mar	Norwegian	direct
16 Mar - 06 Apr	Norwegian	direct
17 Mar - 06 Apr	Norwegian	direct
20 Mar - 06 Apr	Norwegian	direct
23 Mar - 06 Apr	Norwegian Air Sweden AOC	direct
31 Mar - 06 Apr	Norwegian Air Sweden AOC	direct
18 Mar - 06 Apr	Norwegian Air Sweden AOC	direct

Also check the deals for one-way flights from Oslo to Copenhagen in March.

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 Oslo to Copenhagen in March from $185

Return flights