AirHint found the following cheapest return flights from Barcelona (BCN) to Buenos Aires (AEP) in May 2026 (see full year).

Return flights

13 May - 25 May	Air Canada
06 May - 20 May	Air Canada
01 May - 18 May	Air Canada
01 May - 11 May	Air Canada
01 May - 16 May	Air Canada
09 May - 18 May	Vueling Airlines
08 May - 17 May	Vueling Airlines
18 May - 04 Jun	Vueling Airlines
01 May - 21 May	Avianca
23 May - 06 Jun	Royal Air Maroc
18 May - 09 Jun	SWISS
12 May - 05 Jun	Iberia
08 May - 06 Jun	SWISS

Also check the deals for one-way flights from Barcelona to Buenos Aires in May.

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 Barcelona to Buenos Aires in May from $965

Return flights