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

Return flights

06 May - 11 May	Air Canada
08 May - 15 May	Iberia
01 May - 17 May	TAP
01 May - 16 May	TAP
06 May - 15 May	TAP
01 May - 13 May	TAP
18 May - 25 May	TAP
08 May - 23 May	TAP
04 May - 17 May	Avianca
04 May - 11 May	Avianca
20 May - 20 Jun	Avianca
03 May - 08 Jun	Avianca

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 $989

Return flights