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

Return flights

23 Dec - 11 Jan	Jetstar Japan
31 Dec - 16 Jan	VietJet Air
30 Dec - 30 Jan	Japan Airlines
23 Dec - 12 Jan	Jetstar Japan
31 Dec - 31 Jan	Japan Airlines
22 Dec - 11 Jan	VietJet Air
21 Dec - 15 Jan	Air China
31 Dec - 07 Jan	VietJet Air
21 Dec - 10 Jan	Jetstar Japan
22 Dec - 06 Jan	VietJet Air
22 Dec - 29 Dec	VietJet Air
22 Dec - 27 Dec	Korean Air
21 Dec - 26 Dec	Thai Airways
25 Dec - 29 Dec	Air India
24 Dec - 31 Dec	Cathay Pacific
24 Dec - 28 Dec	China Southern
24 Dec - 30 Dec	China Southern
27 Dec - 31 Dec	Cathay Pacific
24 Dec - 29 Dec	Air India
25 Dec - 28 Dec	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.

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Cheapest return flights from Tokyo to Kathmandu in December from $634

Return flights