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

Return flights

01 May - 08 May	TAP
04 May - 18 May	TAP
06 May - 12 May	TAP
18 May - 24 May	TAP
11 May - 24 May	Iberia
06 May - 20 May	Iberia
04 May - 23 May	Iberia
13 May - 25 May	Azul Airlines
19 May - 25 May	Iberia
06 May - 27 May	Avianca
12 May - 09 Jun	Avianca
31 May - 19 Jun	Avianca
24 May - 01 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 849€

Return flights