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

Return flights

30 Aug - 07 Sep	Air Europa
27 Aug - 06 Sep	Vueling Airlines
19 Aug - 03 Sep	LATAM Airlines Group
11 Aug - 20 Aug	Air Europa
22 Aug - 28 Aug	Vueling Airlines
06 Aug - 20 Aug	Iberia
07 Aug - 08 Aug	Air Europa
11 Aug - 30 Aug	Air Europa
15 Aug - 26 Aug	LATAM Airlines Group
05 Aug - 23 Aug	Air Europa
01 Aug - 15 Aug	Air Europa
02 Aug - 16 Aug	Air Europa

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

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 August from $1278

Return flights