AirHint found the following cheapest return flights from Oslo (OSL) to Trondheim (TRD) in February 2026 (see full year).

Return flights

10 Feb - 17 Feb	Scandinavian Airlines	direct
20 Feb - 22 Feb	Wideroe	direct
19 Feb - 09 Mar	Norwegian	direct
20 Feb - 09 Mar	Norwegian	direct
17 Feb - 09 Mar	Norwegian	direct
07 Feb - 17 Feb	Norwegian	direct
07 Feb - 22 Feb	Norwegian	direct
10 Feb - 22 Feb	Norwegian	direct
19 Feb - 22 Feb	Norwegian	direct
17 Feb - 17 Feb	Norwegian	direct
17 Feb - 22 Feb	Norwegian	direct
13 Feb - 17 Feb	Norwegian	direct
13 Feb - 22 Feb	Norwegian	direct

Also check the deals for one-way flights from Oslo to Trondheim in February.

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 Trondheim in February from $150

Return flights