AirHint found the following cheapest return flights from Zurich (ZRH) to Tromso (TOS) in August 2025 (see full year).

Return flights

26 Aug - 10 Sep	easyJet
22 Aug - 29 Aug	Scandinavian Airlines
21 Aug - 30 Aug	Scandinavian Airlines
19 Aug - 23 Aug	Scandinavian Airlines
28 Aug - 06 Sep	Scandinavian Airlines
26 Aug - 30 Aug	Scandinavian Airlines
26 Aug - 04 Sep	Scandinavian Airlines
25 Aug - 01 Sep	Eurowings
13 Aug - 19 Aug	KLM
12 Aug - 19 Aug	Eurowings
08 Aug - 14 Aug	Finnair
14 Aug - 21 Aug	KLM
23 Aug - 06 Sep	Lufthansa
12 Aug - 16 Aug	KLM
12 Aug - 23 Aug	Condor

Also check the deals for one-way flights from Zurich to Tromso in August.

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 Zurich to Tromso in August from $262

Return flights