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

Return flights

15 May - 05 Jun	Lufthansa
02 May - 25 May	Lufthansa
01 May - 01 Jun	Lufthansa
01 May - 15 May	Lufthansa
01 May - 20 May	Lufthansa
18 May - 31 May	KLM
14 May - 01 Jun	KLM
21 May - 04 Jun	KLM
23 May - 28 May	Air France
08 May - 22 May	Lufthansa
01 May - 14 May	Air Europa	direct
01 May - 20 May	Air Europa	direct
02 May - 25 May	Air Europa	direct
20 May - 07 Jun	Lufthansa
18 May - 31 May	Iberia	direct
14 May - 01 Jun	Iberia	direct
23 May - 06 Jun	Air Europa	direct
21 May - 04 Jun	Iberia	direct
01 May - 01 Jun	Iberia	direct
15 May - 05 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 $989

Return flights