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

Return flights

04 Sep - 16 Sep	China Southern
04 Sep - 13 Sep	China Southern
04 Sep - 20 Sep	China Southern
02 Sep - 11 Sep	China Southern
08 Sep - 15 Sep	China Southern
02 Sep - 18 Sep	China Southern
03 Sep - 12 Sep	China Southern
07 Sep - 24 Sep	SriLankan Airlines
15 Sep - 15 Oct	Scoot Tigerair
13 Sep - 20 Sep	Jetstar
13 Sep - 18 Oct	Jetstar
23 Sep - 06 Oct	VietJet Air
19 Sep - 30 Oct	Cebu Pacific
20 Sep - 27 Oct	China Eastern
09 Sep - 16 Oct	SriLankan Airlines
01 Sep - 25 Sep	Air India
01 Sep - 16 Oct	Air India
02 Sep - 15 Oct	SriLankan Airlines
18 Sep - 08 Oct	Air India
14 Sep - 17 Oct	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 455€

Return flights