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

Return flights

06 May - 18 May	Air Canada
03 May - 18 May	Air Canada
03 May - 03 Jun	Lufthansa
04 May - 05 Jun	Lufthansa
31 May - 12 Jun	Lufthansa
23 May - 06 Jun	Iberia
01 May - 24 May	Lufthansa
01 May - 15 Jun	Lufthansa
15 May - 24 May	Lufthansa
20 May - 08 Jun	Iberia
11 May - 17 May	Air Europa
01 May - 01 Jun	Lufthansa
14 May - 28 May	Lufthansa
01 May - 31 May	Lufthansa
01 May - 15 May	Lufthansa
04 May - 21 May	Avianca
07 May - 14 May	Avianca
31 May - 12 Jun	Iberia	direct
01 May - 10 Jun	Avianca
01 May - 01 Jun	Air Europa	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 660€

Return flights