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

Return flights

05 Sep - 17 Sep	Air China
09 Sep - 16 Sep	Air China
08 Sep - 12 Sep	Air China
06 Sep - 14 Sep	Air China
06 Sep - 21 Sep	Air China
05 Sep - 09 Sep	Air China
02 Sep - 09 Sep	Air China
02 Sep - 07 Sep	Air China
06 Sep - 12 Sep	Air China
02 Sep - 15 Sep	Air China
11 Sep - 09 Oct	Air China
29 Sep - 10 Oct	Scoot Tigerair
11 Sep - 27 Oct	Hainan Airlines
10 Sep - 27 Oct	VietJet Air
09 Sep - 27 Oct	VietJet Air
29 Sep - 28 Oct	Air China
08 Sep - 27 Oct	Air China
27 Sep - 12 Oct	VietJet Air
12 Sep - 27 Oct	Air China
10 Sep - 28 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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Tokyo to Kathmandu in September from 441€

Return flights