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

Return flights

19 Sep - 30 Sep	IndiGo
10 Sep - 27 Sep	IndiGo
05 Sep - 27 Sep	IndiGo
04 Sep - 11 Sep	AJet
03 Sep - 20 Sep	AJet
02 Sep - 10 Sep	Pegasus Airlines
17 Sep - 29 Sep	IndiGo
15 Sep - 29 Sep	IndiGo
02 Sep - 09 Oct	Pegasus Airlines
08 Sep - 15 Sep	IndiGo
17 Sep - 30 Sep	IndiGo
08 Sep - 06 Oct	IndiGo
17 Sep - 04 Oct	IndiGo
17 Sep - 05 Oct	IndiGo
15 Sep - 05 Oct	IndiGo
10 Sep - 10 Oct	Etihad Airways
11 Sep - 02 Oct	Pegasus Airlines
24 Sep - 23 Oct	IndiGo
12 Sep - 05 Oct	IndiGo
30 Sep - 19 Oct	easyJet

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Kathmandu in September from 465€

Return flights