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

Return flights

21 Sep - 20 Oct	China Southern
22 Sep - 20 Oct	China Southern
22 Sep - 18 Oct	China Southern
22 Sep - 22 Oct	China Southern
22 Sep - 27 Oct	China Southern
21 Sep - 30 Oct	China Southern
22 Sep - 30 Oct	China Southern
23 Sep - 30 Oct	China Southern
22 Sep - 12 Oct	China Southern
20 Sep - 20 Oct	China Southern
18 Sep - 22 Sep	China Southern
20 Sep - 27 Sep	Singapore Airlines

Also check the deals for one-way flights from Auckland 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 Auckland to Kathmandu in September from 1142€

Return flights