Cheapest return flights from Oslo to Trondheim in September from $88

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

Return flights

02 Sep - 04 Sep Norwegian direct
08 Sep - 11 Sep Norwegian direct
26 Sep - 27 Sep Norwegian direct
12 Sep - 14 Sep Scandinavian Airlines direct
11 Sep - 11 Sep Norwegian direct
11 Sep - 17 Sep Norwegian direct
11 Sep - 18 Sep Norwegian direct
11 Sep - 20 Sep Norwegian direct
11 Sep - 23 Sep Norwegian direct
11 Sep - 26 Sep Norwegian direct
11 Sep - 01 Oct Norwegian direct
17 Sep - 01 Oct Norwegian direct
17 Sep - 02 Oct Norwegian direct
17 Sep - 07 Oct Norwegian direct
15 Sep - 01 Oct Norwegian direct
15 Sep - 02 Oct Norwegian direct
26 Sep - 01 Oct Norwegian direct
26 Sep - 02 Oct Norwegian direct
26 Sep - 07 Oct Norwegian direct
26 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.

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