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

Return flights

05 May - 18 May	Azul Airlines
14 May - 18 May	Azul Airlines
10 May - 24 May	Azul Airlines
10 May - 10 Jun	Azul Airlines
04 May - 19 May	Avianca
15 May - 27 May	Avianca
01 May - 17 May	Avianca
01 May - 16 May	Avianca
01 May - 10 May	Avianca
12 May - 19 May	Avianca
03 May - 16 May	Avianca
15 May - 05 Jun	easyJet
15 May - 20 Jun	easyJet
15 May - 01 Jun	LATAM Airlines Group
30 May - 13 Jun	LATAM Airlines Group

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 865€

Return flights