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

Return flights

04 Dec - 08 Dec	Etihad Airways
28 Dec - 10 Jan	Turkish Airlines
04 Dec - 14 Dec	AirAsia
20 Dec - 18 Jan	Air India
27 Dec - 05 Jan	Hainan Airlines
18 Dec - 07 Jan	SriLankan Airlines
06 Dec - 16 Dec	Etihad Airways
26 Dec - 10 Jan	Qatar Airways
14 Dec - 19 Dec	AirAsia X
08 Dec - 01 Jan	AirAsia X
25 Dec - 10 Jan	KLM
08 Dec - 19 Dec	AirAsia X
22 Dec - 08 Jan	AirAsia
10 Dec - 02 Jan	AirAsia X
12 Dec - 02 Jan	AirAsia X
15 Dec - 20 Dec	AirAsia
21 Dec - 28 Dec	AirAsia X
18 Dec - 26 Dec	SriLankan Airlines
15 Dec - 30 Dec	Emirates
25 Dec - 30 Dec	Etihad Airways

Also check the deals for one-way flights from Kuala Lumpur to Barcelona 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 Kuala Lumpur to Barcelona in December from 496€

Return flights