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

Return flights

15 Dec - 31 Dec	Air China
19 Dec - 31 Dec	Air China
15 Dec - 29 Jan	Air China
20 Dec - 03 Jan	Air China
31 Dec - 07 Jan	China Eastern
26 Dec - 17 Jan	China Eastern
25 Dec - 18 Jan	China Eastern
25 Dec - 17 Jan	China Eastern
27 Dec - 12 Jan	Air China
02 Dec - 04 Dec	Cathay Pacific
10 Dec - 10 Jan	Cathay Pacific
20 Dec - 11 Jan	Thai AirAsia X
30 Dec - 01 Jan	Air China
02 Dec - 09 Dec	Cathay Pacific
02 Dec - 15 Dec	Thai AirAsia X
04 Dec - 15 Dec	Thai AirAsia X
21 Dec - 30 Dec	Cathay Pacific
24 Dec - 27 Dec	Cathay Pacific
23 Dec - 27 Dec	Cathay Pacific
22 Dec - 27 Dec	Cathay Pacific

Also check the deals for one-way flights from Osaka 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 Osaka to Kathmandu in December from 359€

Return flights