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

Return flights

12 May - 10 Jun	Lufthansa
05 May - 05 Jun	Lufthansa
27 May - 10 Jun	Lufthansa
14 May - 11 Jun	Lufthansa
21 May - 05 Jun	Lufthansa
19 May - 11 Jun	Lufthansa
05 May - 11 Jun	Lufthansa
08 May - 11 Jun	Lufthansa
20 May - 10 Jun	Lufthansa
13 May - 07 Jun	Lufthansa
04 May - 28 May	Avianca
05 May - 18 May	Avianca
11 May - 18 May	Avianca
04 May - 18 May	Avianca
05 May - 26 May	Avianca
04 May - 14 May	Avianca
06 May - 27 May	Air Canada
06 May - 11 May	Air Canada
08 May - 18 May	Air Canada
11 May - 27 May	Avianca

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 631€

Return flights