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

Return flights

17 Sep - 21 Oct	Batik Air Malaysia
13 Sep - 20 Sep	VietJet Air
30 Sep - 16 Oct	VietJet Air
19 Sep - 14 Oct	Batik Air Malaysia
30 Sep - 22 Oct	VietJet Air
15 Sep - 22 Oct	Virgin Australia
26 Sep - 19 Oct	AirAsia X
28 Sep - 22 Oct	AirAsia X
29 Sep - 16 Oct	AirAsia X
29 Sep - 31 Oct	AirAsia X
26 Sep - 09 Oct	AirAsia X
12 Sep - 19 Sep	Batik Air
15 Sep - 30 Sep	Virgin Australia
25 Sep - 30 Sep	Batik Air Malaysia
22 Sep - 30 Sep	Jetstar
11 Sep - 16 Sep	Qantas
21 Sep - 28 Sep	Batik Air Malaysia
13 Sep - 19 Sep	Thai Airways
14 Sep - 21 Sep	Thai Airways
15 Sep - 22 Sep	Thai Airways

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 663€

Return flights