AirHint found the following cheapest return flights from Duesseldorf (DUS) to Tromso (TOS) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	Scandinavian Airlines
02 Sep - 09 Sep	Scandinavian Airlines
23 Sep - 07 Oct	Scandinavian Airlines
23 Sep - 14 Oct	Scandinavian Airlines
10 Sep - 22 Sep	Scandinavian Airlines
29 Sep - 08 Oct	Norwegian
05 Sep - 07 Sep	Scandinavian Airlines
15 Sep - 21 Sep	Norwegian
06 Sep - 13 Sep	Eurowings
05 Sep - 12 Sep	Scandinavian Airlines
08 Sep - 14 Sep	Norwegian
03 Sep - 14 Sep	Scandinavian Airlines
12 Sep - 14 Sep	Scandinavian Airlines
28 Sep - 11 Oct	Lufthansa
17 Sep - 01 Oct	Ryanair

Also check the deals for one-way flights from Duesseldorf to Tromso in September.

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 Duesseldorf to Tromso in September from $184

Return flights