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

Return flights

29 Aug - 29 Sep	AJet
27 Aug - 15 Sep	AJet
27 Aug - 09 Sep	AJet
25 Aug - 01 Sep	AJet
30 Aug - 11 Sep	Pegasus Airlines
30 Aug - 10 Sep	Pegasus Airlines
29 Aug - 12 Sep	AJet
31 Aug - 13 Sep	AJet
24 Aug - 19 Sep	Pegasus Airlines
25 Aug - 31 Aug	IndiGo
24 Aug - 31 Aug	IndiGo
24 Aug - 09 Sep	AJet
21 Aug - 29 Aug	IndiGo

Also check the deals for one-way flights from Zurich to Kathmandu 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 Kathmandu in August from $636

Return flights