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

Return flights

04 Dec - 17 Dec	Thai AirAsia
11 Dec - 17 Dec	Thai AirAsia
01 Dec - 08 Dec	AirAsia X
05 Dec - 09 Dec	Thai VietJet Air
28 Dec - 05 Jan	Thai AirAsia
25 Dec - 04 Jan	Thai AirAsia
22 Dec - 31 Dec	Thai Airways
04 Dec - 25 Dec	Thai Airways
29 Dec - 07 Jan	Thai Airways
26 Dec - 03 Jan	Thai Airways
25 Dec - 15 Jan	Thai Airways
30 Dec - 04 Jan	Cathay Pacific
27 Dec - 06 Jan	Cathay Pacific
26 Dec - 26 Dec	AirAsia X

Also check the deals for one-way flights from Taipei 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 Taipei to Kathmandu in December from $531

Return flights