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

Return flights

14 Sep - 27 Sep	Pegasus Airlines
15 Sep - 23 Sep	Ryanair
14 Sep - 21 Sep	Pegasus Airlines
15 Sep - 15 Oct	Ryanair
15 Sep - 12 Oct	Ryanair
11 Sep - 27 Sep	Pegasus Airlines
15 Sep - 04 Oct	Ryanair
16 Sep - 30 Sep	Pegasus Airlines
10 Sep - 10 Oct	Air Serbia
11 Sep - 18 Sep	Pegasus Airlines
13 Sep - 20 Sep	Ryanair
15 Sep - 22 Sep	Ryanair
09 Sep - 27 Sep	Pegasus Airlines
10 Sep - 15 Oct	Ryanair
13 Sep - 12 Oct	Air Serbia
15 Sep - 05 Oct	Ryanair
16 Sep - 23 Sep	Pegasus Airlines
16 Sep - 15 Oct	Pegasus Airlines
20 Sep - 20 Oct	Ryanair
13 Sep - 26 Oct	Ryanair

Also check the deals for one-way flights from Zagreb 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 Zagreb to Kathmandu in September from 596€

Return flights