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

Return flights

09 Sep - 15 Sep	Air China
13 Sep - 17 Sep	Air China
10 Sep - 24 Oct	China Eastern
16 Sep - 19 Sep	Air China
03 Sep - 12 Oct	China Southern
06 Sep - 10 Oct	HK Express
15 Sep - 20 Sep	China Southern
07 Sep - 10 Sep	Air China
15 Sep - 24 Oct	Tigerair Taiwan
16 Sep - 22 Sep	China Eastern
14 Sep - 21 Oct	Air China
14 Sep - 24 Oct	HK Express
14 Sep - 13 Oct	Air China
04 Sep - 24 Sep	HK Express
16 Sep - 12 Oct	Peach
06 Sep - 11 Sep	AirAsia X
04 Sep - 09 Sep	Air India
04 Sep - 08 Sep	Air India
20 Sep - 15 Oct	HK Express
20 Sep - 11 Oct	HK Express

Also check the deals for one-way flights from Tokyo 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 Tokyo to Kathmandu in September from 403€

Return flights