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

Return flights

12 May - 18 May	Air Canada
05 May - 18 May	Air Canada
14 May - 21 May	Avianca
19 May - 08 Jun	Royal Air Maroc
04 May - 18 May	Royal Air Maroc
11 May - 27 May	Avianca
13 May - 27 May	Avianca
15 May - 29 May	Avianca
05 May - 27 May	Iberia
08 May - 17 May	Iberia
05 May - 22 May	Iberia
25 May - 17 Jun	Iberia
13 May - 15 Jun	Iberia
01 May - 11 Jun	Avianca
20 May - 17 Jun	Avianca
02 May - 01 Jun	Royal Air Maroc
11 May - 17 Jun	Avianca
04 May - 08 Jun	Avianca
29 May - 13 Jun	Avianca
05 May - 05 Jun	LATAM Airlines Group

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 $891

Return flights