AirHint found the following cheapest return flights from Bilbao (BIO) to Cape Town (CPT) in December 2025 (see full year).

Return flights

05 Dec - 21 Dec	Air France
05 Dec - 16 Dec	Air France
05 Dec - 15 Dec	Air France
06 Dec - 15 Dec	KLM
06 Dec - 16 Dec	KLM
21 Dec - 09 Jan	Air Europa
22 Dec - 09 Jan	Air Europa
21 Dec - 08 Jan	Vueling Airlines
21 Dec - 06 Jan	Vueling Airlines
26 Dec - 06 Jan	Vueling Airlines
20 Dec - 07 Jan	Vueling Airlines
20 Dec - 06 Jan	Vueling Airlines
20 Dec - 09 Jan	Air Europa
19 Dec - 28 Dec	Air Europa
20 Dec - 08 Jan	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Cape Town 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 Cape Town in December from $679

Return flights