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

Return flights

07 Sep - 22 Sep	Pegasus Airlines
05 Sep - 22 Sep	Pegasus Airlines
04 Sep - 16 Sep	AJet
06 Sep - 22 Sep	IndiGo
07 Sep - 21 Sep	IndiGo
07 Sep - 23 Sep	IndiGo
05 Sep - 21 Sep	IndiGo
06 Sep - 21 Sep	Pegasus Airlines
02 Sep - 20 Sep	IndiGo
21 Sep - 28 Sep	Air India
29 Sep - 08 Oct	Air India
21 Sep - 10 Oct	Air India
28 Sep - 12 Oct	Air India
29 Sep - 14 Oct	Air India
22 Sep - 15 Oct	Air India
28 Sep - 27 Oct	Air India
24 Sep - 18 Oct	Air India
24 Sep - 19 Oct	Air India
29 Sep - 15 Oct	Air India
22 Sep - 14 Oct	Air India

Also check the deals for one-way flights from Zurich to Kathmandu 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 Zurich to Kathmandu in September from 556€

Return flights