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

Return flights

11 Dec - 16 Dec	Air India
23 Dec - 30 Dec	Air India
15 Dec - 17 Dec	Air India
17 Dec - 19 Dec	Air India
24 Dec - 31 Dec	Air India
01 Dec - 31 Dec	Air India
02 Dec - 10 Dec	Air India
24 Dec - 28 Dec	Air India
10 Dec - 12 Dec	Air India
25 Dec - 29 Dec	Air India
24 Dec - 03 Jan	Air India
25 Dec - 05 Jan	Air India
29 Dec - 11 Jan	Air India
25 Dec - 01 Jan	Air India
22 Dec - 23 Jan	Air India
25 Dec - 03 Jan	Air India
24 Dec - 04 Jan	Air India
14 Dec - 08 Jan	Air India
25 Dec - 04 Jan	Air India
30 Dec - 04 Jan	Air India

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

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 December from $639

Return flights