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

Return flights

12 Sep - 06 Oct	Wizz Air Malta
30 Sep - 06 Oct	Wizz Air Malta
13 Sep - 28 Sep	Wizz Air Malta
15 Sep - 30 Sep	AJet
12 Sep - 19 Sep	Wizz Air Malta
15 Sep - 22 Sep	AJet
15 Sep - 23 Sep	AJet
30 Sep - 20 Oct	Wizz Air Malta
15 Sep - 05 Oct	AJet
23 Sep - 08 Oct	Wizz Air Malta
17 Sep - 27 Sep	AJet
25 Sep - 10 Oct	Wizz Air Malta
26 Sep - 30 Sep	Wizz Air Malta
11 Sep - 14 Sep	AJet
29 Sep - 06 Oct	Pegasus Airlines
29 Sep - 07 Oct	Pegasus Airlines

Also check the deals for one-way flights from Rome 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 Rome to Kathmandu in September from 544€

Return flights