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

Return flights

12 Dec - 12 Jan	Wizz Air Malta
08 Dec - 25 Dec	Vueling Airlines
08 Dec - 26 Dec	Vueling Airlines
10 Dec - 27 Dec	Pegasus Airlines
22 Dec - 07 Jan	AJet
27 Dec - 07 Jan	Ryanair
25 Dec - 07 Jan	Vueling Airlines
21 Dec - 07 Jan	Wizz Air
23 Dec - 07 Jan	Vueling Airlines
15 Dec - 31 Dec	Wizz Air
23 Dec - 12 Jan	Vueling Airlines
19 Dec - 31 Dec	AJet
22 Dec - 06 Jan	AJet
21 Dec - 03 Jan	Wizz Air
21 Dec - 06 Jan	Wizz Air
22 Dec - 29 Dec	AJet
01 Dec - 08 Dec	Qatar Airways

Also check the deals for one-way flights from Barcelona 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 Barcelona to Kathmandu in December from 594€

Return flights