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

Return flights

01 Apr - 15 Apr	Azul Airlines
06 Apr - 19 Apr	SWISS
02 Apr - 17 Apr	TAP
02 Apr - 15 Apr	SWISS
01 Apr - 08 Apr	Azul Airlines
29 Apr - 12 May	Iberia
07 Apr - 26 Apr	Avianca
17 Apr - 25 Apr	Avianca
08 Apr - 25 Apr	Avianca
15 Apr - 19 Apr	Avianca
27 Apr - 10 May	Avianca
26 Apr - 10 May	Avianca
30 Apr - 19 May	Avianca
13 Apr - 19 May	Avianca
10 Apr - 26 Apr	Avianca
25 Apr - 29 May	Avianca
25 Apr - 08 May	Avianca
29 Apr - 11 May	Avianca
07 Apr - 07 May	Ryanair
01 Apr - 01 May	Azul Airlines

Also check the deals for one-way flights from Madrid to Buenos Aires in April.

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 April from 814€

Return flights