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

Return flights

02 Sep - 07 Sep	China Eastern
05 Sep - 07 Sep	China Eastern
14 Sep - 22 Sep	China Eastern
06 Sep - 11 Sep	China Eastern
06 Sep - 15 Sep	China Eastern
09 Sep - 17 Sep	China Eastern
10 Sep - 23 Sep	China Eastern
10 Sep - 15 Sep	China Eastern
01 Sep - 08 Sep	China Eastern
08 Sep - 15 Sep	China Eastern
01 Sep - 01 Oct	China Eastern
13 Sep - 12 Oct	China Eastern
12 Sep - 04 Oct	China Eastern
02 Sep - 05 Oct	China Eastern
13 Sep - 03 Oct	China Eastern
16 Sep - 07 Oct	China Eastern
06 Sep - 13 Oct	Air China
12 Sep - 03 Oct	China Eastern
12 Sep - 11 Oct	Air China
03 Sep - 10 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 230€

Return flights