Cheapest return flights from Oslo to Trondheim in September from 85€

AirHint found the following cheapest return flights from Oslo (OSL) to Trondheim (TRD) in September 2025 (see full year).

Return flights

09 Sep - 16 Sep Wideroe
08 Sep - 11 Sep Wizz Air
09 Sep - 16 Sep Wideroe direct
08 Sep - 15 Sep Wizz Air
19 Sep - 21 Sep Wizz Air
04 Sep - 08 Sep Wideroe direct
08 Sep - 11 Sep Wideroe direct
10 Sep - 17 Sep Wizz Air
02 Sep - 11 Sep Wideroe
08 Sep - 18 Sep Wideroe direct
26 Sep - 12 Oct Norwegian direct
26 Sep - 13 Oct Norwegian direct
28 Sep - 12 Oct Norwegian direct
30 Sep - 12 Oct Norwegian direct
22 Sep - 12 Oct Norwegian direct
23 Sep - 12 Oct Norwegian direct
25 Sep - 12 Oct Norwegian direct
24 Sep - 12 Oct Norwegian direct
21 Sep - 12 Oct Norwegian direct
27 Sep - 12 Oct Norwegian direct

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

Skyscanner

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.

Book a cheap hotel in Trondheim

Cheap car rent in Trondheim

Feel free to contact us with any feedback or request another flight research.