Cheapest return flights from Trondheim to Oslo in September from $101

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

Return flights

30 Sep - 17 Oct Norwegian direct
30 Sep - 07 Oct Norwegian direct
30 Sep - 16 Oct Norwegian direct
30 Sep - 21 Oct Norwegian direct
30 Sep - 14 Oct Norwegian direct
30 Sep - 15 Oct Norwegian direct
30 Sep - 20 Oct Norwegian direct
30 Sep - 13 Oct Norwegian direct
30 Sep - 18 Oct Norwegian direct
29 Sep - 17 Oct Norwegian direct
30 Sep - 30 Sep Norwegian direct
29 Sep - 30 Sep Norwegian direct
28 Sep - 30 Sep Norwegian direct
26 Sep - 30 Sep Norwegian direct
23 Sep - 30 Sep Norwegian direct
25 Sep - 29 Sep Norwegian
25 Sep - 30 Sep Norwegian direct
21 Sep - 30 Sep Norwegian direct
22 Sep - 30 Sep Norwegian direct
24 Sep - 30 Sep Norwegian direct

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