AirHint found the following cheapest return flights from Tokyo (NRT) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

13 Sep - 20 Sep	Thai AirAsia X
22 Sep - 27 Sep	Thai AirAsia X
21 Sep - 31 Oct	Air China
05 Sep - 08 Sep	Air China
18 Sep - 22 Sep	Air China
19 Sep - 22 Sep	Air China
29 Sep - 13 Oct	Air China
27 Sep - 23 Oct	Air China
20 Sep - 28 Sep	Thai AirAsia X
19 Sep - 27 Sep	IndiGo
19 Sep - 28 Sep	IndiGo
18 Sep - 27 Sep	VietJet Air
18 Sep - 28 Sep	VietJet Air
19 Sep - 02 Oct	Air China

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 353€

Return flights