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

Return flights

01 Sep - 30 Oct	Pegasus Airlines
29 Sep - 29 Sep	flydubai
11 Sep - 28 Sep	Wizz Air Malta
20 Sep - 20 Sep	flydubai
24 Sep - 25 Oct	Pegasus Airlines
14 Sep - 29 Oct	flydubai
24 Sep - 15 Oct	flydubai
24 Sep - 14 Oct	flydubai
24 Sep - 17 Oct	flydubai
20 Sep - 05 Oct	flydubai

Also check the deals for one-way flights from Bucharest 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 Bucharest to Kathmandu in September from 579€

Return flights