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

Return flights

03 Dec - 21 Dec	Air China
20 Dec - 08 Jan	Air China
02 Dec - 09 Dec	Air China
03 Dec - 17 Dec	Air China
05 Dec - 08 Dec	Air China
16 Dec - 12 Jan	Air China
17 Dec - 13 Jan	Air China
18 Dec - 05 Jan	Air China
19 Dec - 05 Jan	Air China
20 Dec - 05 Jan	Air China
14 Dec - 20 Dec	Air China
13 Dec - 20 Dec	Air China
17 Dec - 21 Dec	Air China
13 Dec - 30 Dec	Air China
21 Dec - 26 Dec	Air China
21 Dec - 25 Dec	Air China
08 Dec - 03 Jan	Air China
25 Dec - 07 Jan	Air Japan
24 Dec - 09 Jan	Thai AirAsia X
24 Dec - 08 Jan	Thai AirAsia X

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 $442

Return flights