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

Return flights

05 Sep - 14 Sep	Air China
23 Sep - 13 Oct	Thai AirAsia
17 Sep - 06 Oct	Thai AirAsia
18 Sep - 06 Oct	Thai AirAsia
23 Sep - 06 Oct	Thai AirAsia
16 Sep - 06 Oct	Thai AirAsia
25 Sep - 13 Oct	Thai AirAsia
20 Sep - 06 Oct	Thai AirAsia
19 Sep - 06 Oct	Thai AirAsia
16 Sep - 02 Oct	Thai Airways
05 Sep - 14 Sep	China Southern	direct
01 Sep - 09 Sep	China Southern	direct
25 Sep - 06 Oct	Thai AirAsia

Also check the deals for one-way flights from Guangzhou 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 Guangzhou to Kathmandu in September from $391

Return flights