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

Return flights

06 May - 11 May	Air Canada
01 May - 22 May	Lufthansa
01 May - 31 May	Lufthansa
01 May - 15 May	Lufthansa
01 May - 29 May	Lufthansa
01 May - 17 May	Lufthansa
10 May - 10 Jun	Iberia
04 May - 19 May	Avianca
15 May - 27 May	Avianca
05 May - 18 May	Avianca
02 May - 18 May	Avianca
15 May - 01 Jun	Iberia
22 May - 21 Jun	Air France
15 May - 05 Jun	Iberia
30 May - 13 Jun	Iberia
15 May - 05 Jun	Air Europa	direct
15 May - 01 Jun	Iberia	direct
10 May - 10 Jun	Air Europa	direct
22 May - 21 Jun	Iberia	direct
30 May - 13 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 681€

Return flights