AirHint found the following cheapest return flights from Rio De Janeiro (SDU) to Buenos Aires (AEP) in May 2026 (see full year).

Return flights

18 May - 26 May	LATAM Airlines Group
02 May - 11 May	LATAM Airlines Group
14 May - 19 May	LATAM Airlines Group
02 May - 08 May	LATAM Airlines Group
01 May - 08 May	LATAM Airlines Group
28 May - 01 Jun	Azul Airlines
04 May - 08 May	Azul Airlines
28 May - 08 Jun	GOL Linhas Aéreas
22 May - 25 May	Azul Airlines
10 May - 24 May	GOL Linhas Aéreas
27 May - 03 Jun	GOL Linhas Aéreas
01 May - 03 May	GOL Linhas Aéreas
21 May - 29 May	GOL Linhas Aéreas
28 May - 03 Jun	GOL Linhas Aéreas
29 May - 03 Jun	GOL Linhas Aéreas

Also check the deals for one-way flights from Rio De Janeiro 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 Rio De Janeiro to Buenos Aires in May from $248

Return flights