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

Return flights

13 May - 21 May	Air Canada
07 May - 16 May	Ryanair
05 May - 18 May	Azul Airlines
11 May - 16 May	Air Europa
15 May - 24 May	Iberia
18 May - 31 May	Air Europa
10 May - 24 May	Iberia
11 May - 24 May	Air Europa
09 May - 16 May	Azul Airlines
11 May - 10 Jun	Air Europa
05 May - 08 May	Azul Airlines
29 May - 09 Jun	Air Europa
07 May - 09 Jun	SWISS
13 May - 02 Jun	SWISS
23 May - 07 Jun	SWISS

Also check the deals for one-way flights from Madrid 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 Madrid to Buenos Aires in May from $888

Return flights