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

Return flights

01 Aug - 23 Aug	Thai AirAsia X
01 Aug - 30 Aug	Thai AirAsia X
22 Aug - 29 Aug	HK Express
02 Aug - 30 Aug	HK Express
01 Aug - 01 Sep	HK Express
20 Aug - 20 Sep	HK Express
02 Aug - 26 Aug	Thai AirAsia X
01 Aug - 31 Aug	HK Express
02 Aug - 09 Aug	Thai AirAsia X
02 Aug - 19 Aug	Thai AirAsia X
01 Aug - 27 Aug	HK Express
06 Aug - 31 Aug	Thai AirAsia X
06 Aug - 02 Sep	Thai AirAsia X
18 Aug - 16 Sep	HK Express
30 Aug - 06 Sep	Malaysia Airlines
30 Aug - 30 Sep	Malaysia Airlines
29 Aug - 05 Sep	China Southern
14 Aug - 26 Sep	Air India
05 Aug - 05 Sep	Air India
05 Aug - 17 Sep	Air India

Also check the deals for one-way flights from Tokyo to Kathmandu in August.

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 August from $484

Return flights