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

Return flights

08 Dec - 09 Jan	China Southern
14 Dec - 15 Dec	China Southern
06 Dec - 22 Dec	Nepal Airlines
14 Dec - 21 Dec	China Southern
17 Dec - 31 Dec	China Southern
12 Dec - 17 Dec	China Southern
09 Dec - 10 Jan	China Southern
15 Dec - 22 Dec	China Southern
21 Dec - 30 Jan	Air China
06 Dec - 13 Dec	Thai Airways
19 Dec - 28 Jan	Thai Airways
20 Dec - 29 Dec	Air China
18 Dec - 05 Jan	China Southern
03 Dec - 31 Dec	Thai Airways
16 Dec - 24 Dec	Emirates

Also check the deals for one-way flights from Kathmandu to Tokyo 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 Kathmandu to Tokyo in December from 518€

Return flights