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

Return flights

12 Dec - 28 Dec	Air China
10 Dec - 23 Jan	Air China
17 Dec - 30 Jan	Air China
03 Dec - 18 Jan	Air China
21 Dec - 13 Jan	Air China
06 Dec - 18 Jan	Air China
18 Dec - 10 Jan	Air China
02 Dec - 10 Jan	Air China
19 Dec - 26 Dec	Air China
03 Dec - 30 Dec	Air China
04 Dec - 10 Jan	Air China
17 Dec - 15 Jan	Air China
05 Dec - 10 Jan	Air China
01 Dec - 05 Dec	Air China
03 Dec - 09 Dec	Air China
01 Dec - 06 Dec	Air China
13 Dec - 26 Dec	Air China
15 Dec - 17 Dec	Air China
03 Dec - 10 Dec	Air China
15 Dec - 22 Dec	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.

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Cheapest return flights from Tokyo to Kathmandu in December from $404

Return flights