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

Return flights

31 Oct - 17 Nov	Air Europa
27 Oct - 09 Nov	Air Europa
09 Oct - 25 Oct	Air Europa
20 Oct - 01 Nov	Air Europa
01 Oct - 21 Oct	Vueling Airlines
20 Oct - 30 Oct	Air Europa
29 Oct - 04 Nov	Air Europa
11 Oct - 26 Oct	Air Europa
12 Oct - 31 Oct	Lufthansa
09 Oct - 30 Oct	LATAM Airlines Group
17 Oct - 19 Oct	Iberia
13 Oct - 03 Nov	Air Europa
23 Oct - 03 Nov	LATAM Airlines Group
01 Oct - 31 Oct	Vueling Airlines
10 Oct - 03 Nov	Air Europa
16 Oct - 02 Nov	Avianca
02 Oct - 22 Oct	SWISS
22 Oct - 03 Nov	LATAM Airlines Group
17 Oct - 03 Nov	Iberia
03 Oct - 05 Oct	SWISS

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

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 Buenos Aires in October from $1109

Return flights