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

Return flights

10 Sep - 07 Oct	VietJet Air
17 Sep - 15 Oct	Virgin Australia
10 Sep - 08 Oct	VietJet Air
29 Sep - 20 Oct	VietJet Air
08 Sep - 23 Sep	VietJet Air
29 Sep - 14 Oct	VietJet Air
13 Sep - 27 Sep	Virgin Australia
17 Sep - 21 Oct	Virgin Australia
29 Sep - 15 Oct	VietJet Air
28 Sep - 28 Oct	China Southern
17 Sep - 26 Oct	Jetstar
23 Sep - 28 Oct	Jetstar
08 Sep - 19 Sep	China Southern
10 Sep - 17 Sep	Cathay Pacific
19 Sep - 30 Sep	VietJet Air
12 Sep - 18 Sep	China Southern
09 Sep - 30 Sep	Cathay Pacific
12 Sep - 19 Sep	China Southern
17 Sep - 24 Sep	China Southern
11 Sep - 26 Sep	China Southern

Also check the deals for one-way flights from Brisbane 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 Brisbane to Kathmandu in September from 732€

Return flights