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

Return flights

06 Dec - 08 Jan	Vueling Airlines
03 Dec - 16 Dec	KLM
19 Dec - 04 Jan	Vueling Airlines
20 Dec - 04 Jan	Vueling Airlines
30 Dec - 02 Jan	Vueling Airlines
27 Dec - 10 Jan	Vueling Airlines
21 Dec - 04 Jan	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Kuala Lumpur 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 Bilbao to Kuala Lumpur in December from $694

Return flights