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

Return flights

20 May - 25 May	Air Canada
06 May - 25 May	Air Canada
06 May - 21 May	Air Canada
03 May - 18 May	Air Canada
06 May - 18 May	Air Canada
13 May - 25 May	Air Canada
06 May - 11 May	Air Canada
15 May - 03 Jun	Lufthansa
07 May - 07 Jun	Lufthansa
11 May - 20 May	Air Canada
16 May - 16 Jun	Lufthansa
01 May - 01 Jun	Lufthansa
01 May - 31 May	Lufthansa
15 May - 24 May	Lufthansa
01 May - 30 Jun	Lufthansa
25 May - 08 Jun	Iberia
30 May - 30 Jun	Lufthansa
26 May - 02 Jun	Boliviana de Aviacion
18 May - 15 Jun	Iberia
15 May - 03 Jun	Iberia	direct

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 $801

Return flights