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

Return flights

02 Dec - 09 Dec	Iberia
12 Dec - 08 Jan	Turkish Airlines
12 Dec - 24 Jan	Turkish Airlines
07 Dec - 07 Jan	Turkish Airlines
15 Dec - 15 Jan	Turkish Airlines
01 Dec - 24 Dec	Turkish Airlines
01 Dec - 25 Dec	Turkish Airlines
01 Dec - 27 Dec	Turkish Airlines
01 Dec - 08 Dec	Emirates
03 Dec - 30 Jan	Emirates
04 Dec - 27 Jan	Emirates
01 Dec - 26 Dec	Emirates
24 Dec - 16 Jan	Emirates
08 Dec - 15 Dec	Emirates
26 Dec - 30 Dec	Turkish Airlines
17 Dec - 03 Jan	Turkish Airlines
15 Dec - 14 Jan	Qatar Airways
30 Dec - 02 Jan	Qatar Airways

Also check the deals for one-way flights from Lisbon 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 Lisbon to Kathmandu in December from 613€

Return flights