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

Return flights

03 Sep - 10 Sep	AirAsia X
01 Sep - 15 Sep	AirAsia X
08 Sep - 21 Oct	AirAsia X
02 Sep - 13 Sep	Jetstar
01 Sep - 24 Oct	AirAsia X
08 Sep - 21 Sep	AirAsia X
04 Sep - 18 Sep	Jetstar
15 Sep - 15 Oct	Jetstar
03 Sep - 07 Sep	SriLankan Airlines
12 Sep - 23 Sep	AirAsia X
02 Sep - 15 Oct	Jetstar
08 Sep - 20 Oct	AirAsia X
01 Sep - 06 Oct	AirAsia X
08 Sep - 14 Sep	IndiGo
29 Sep - 06 Oct	VietJet Air
03 Sep - 25 Sep	SriLankan Airlines
02 Sep - 05 Sep	IndiGo
10 Sep - 02 Oct	AirAsia X
12 Sep - 01 Oct	VietJet Air
17 Sep - 07 Oct	Xiamen Airlines

Also check the deals for one-way flights from Melbourne 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 Melbourne to Kathmandu in September from 548€

Return flights