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
06 May - 21 May	Air Canada
12 May - 21 May	Air Canada
06 May - 11 May	Air Canada
13 May - 21 May	Air Canada
05 May - 11 May	Air Canada
19 May - 10 Jun	Lufthansa
01 May - 10 Jun	Lufthansa
12 May - 10 Jun	Lufthansa
10 May - 10 Jun	Lufthansa
08 May - 21 May	Air Canada
07 May - 08 Jun	Lufthansa
20 May - 10 Jun	Lufthansa
05 May - 13 May	Air Canada
01 May - 03 Jun	Lufthansa
06 May - 28 Jun	Lufthansa
05 May - 05 Jun	Lufthansa
06 May - 03 Jun	Lufthansa
11 May - 20 May	Delta
13 May - 20 May	Delta

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 640€

Return flights