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

Return flights

21 Dec - 30 Dec	Cathay Pacific
19 Dec - 07 Jan	Cathay Pacific
27 Dec - 12 Jan	Thai AirAsia X
24 Dec - 31 Dec	Thai Airways
15 Dec - 15 Jan	China Southern
25 Dec - 31 Dec	Thai Airways
26 Dec - 03 Jan	Korean Air
29 Dec - 01 Jan	Thai Airways
25 Dec - 03 Jan	Thai Airways
30 Dec - 01 Jan	Thai Airways
26 Dec - 01 Jan	Thai Airways
21 Dec - 07 Jan	Thai AirAsia X
26 Dec - 31 Dec	Thai Airways
27 Dec - 07 Jan	Thai AirAsia X
21 Dec - 31 Dec	Thai AirAsia X
27 Dec - 31 Dec	Thai AirAsia X
14 Dec - 20 Dec	China Southern

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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Osaka to Kathmandu in December from 693€

Return flights