AirHint found the following cheapest return flights from Bilbao (BIO) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

01 Dec - 11 Dec	Lufthansa
01 Dec - 18 Dec	Lufthansa
05 Dec - 08 Dec	Turkish Airlines
01 Dec - 25 Dec	Lufthansa
03 Dec - 25 Dec	Lufthansa
24 Dec - 25 Jan	Air France
03 Dec - 26 Dec	Lufthansa
02 Dec - 17 Jan	Iberia
27 Dec - 27 Jan	Air France
06 Dec - 26 Dec	Air Europa
12 Dec - 19 Dec	ITA Airways
12 Dec - 28 Dec	Vueling Airlines
15 Dec - 16 Jan	easyJet
23 Dec - 15 Jan	Iberia
20 Dec - 27 Dec	Air Europa
16 Dec - 08 Jan	Air Europa
25 Dec - 06 Jan	Vueling Airlines
23 Dec - 09 Jan	Iberia
20 Dec - 06 Jan	Air Europa
22 Dec - 07 Jan	Vueling Airlines

Also check the deals for one-way flights from Bilbao to Buenos Aires 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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Bilbao to Buenos Aires in December from $951

Return flights