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

Return flights

26 Sep - 08 Oct	Thai AirAsia
04 Sep - 13 Sep	Thai Airways
02 Sep - 16 Sep	Thai Airways
10 Sep - 15 Sep	Thai Airways
26 Sep - 10 Oct	Thai AirAsia
26 Sep - 04 Oct	Thai AirAsia
26 Sep - 02 Oct	Thai AirAsia
23 Sep - 27 Sep	Thai Lion Air
04 Sep - 13 Sep	China Southern	direct
10 Sep - 15 Sep	China Southern	direct
02 Sep - 16 Sep	China Southern	direct
26 Sep - 30 Sep	Thai AirAsia
13 Sep - 20 Sep	China Southern	direct
30 Sep - 02 Oct	Thai Airways
30 Sep - 02 Oct	China Southern	direct
22 Sep - 30 Sep	Thai Airways

Also check the deals for one-way flights from Kathmandu to Guangzhou 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 Kathmandu to Guangzhou in September from 336€

Return flights