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

Return flights

12 Dec - 26 Dec	Air China
18 Dec - 28 Jan	Air China
11 Dec - 18 Dec	Air China
15 Dec - 26 Dec	Air China
18 Dec - 20 Dec	Air China
09 Dec - 23 Dec	Air China
07 Dec - 10 Dec	Air China
16 Dec - 18 Dec	Air China
13 Dec - 18 Dec	Air China
13 Dec - 16 Dec	Air China
16 Dec - 20 Jan	Air China
11 Dec - 19 Dec	Air China
17 Dec - 18 Jan	Air China
22 Dec - 12 Jan	HK Express
30 Dec - 28 Jan	Air China
20 Dec - 05 Jan	StarFlyer
17 Dec - 27 Jan	Cathay Pacific
24 Dec - 07 Jan	StarFlyer
30 Dec - 12 Jan	China Southern
20 Dec - 07 Jan	Air China

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 351€

Return flights