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

Return flights

27 Aug - 05 Sep	China Southern
31 Aug - 02 Sep	Air India
21 Aug - 28 Aug	Air India
25 Aug - 30 Aug	Air India
21 Aug - 24 Aug	China Southern
23 Aug - 31 Aug	Air India
18 Aug - 23 Aug	Air India
27 Aug - 31 Aug	Air India
19 Aug - 23 Aug	Air India
22 Aug - 24 Aug	Air India
20 Aug - 30 Aug	Air India
20 Aug - 31 Aug	Air India
25 Aug - 25 Sep	Air India
25 Aug - 01 Sep	Air India
29 Aug - 02 Sep	Air India
18 Aug - 02 Sep	Air India
18 Aug - 01 Sep	Air India
31 Aug - 01 Sep	Air India
31 Aug - 15 Sep	Air India
31 Aug - 07 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 $586

Return flights