AirHint found the following cheapest return flights from Buenos Aires (EZE) to San Jose (SJO) in August 2025 (see full year).

Return flights

05 Aug - 11 Aug	LATAM Airlines Group
30 Aug - 04 Sep	Avianca
28 Aug - 02 Sep	Copa
27 Aug - 06 Sep	LATAM Airlines Group
28 Aug - 07 Sep	LATAM Airlines Group
12 Aug - 20 Aug	Avianca
07 Aug - 16 Sep	Avianca
29 Aug - 09 Sep	Avianca
28 Aug - 10 Sep	Avianca
06 Aug - 25 Aug	Avianca
04 Aug - 31 Aug	Avianca
09 Aug - 24 Aug	Avianca
13 Aug - 16 Aug	Avianca
09 Aug - 23 Aug	LATAM Airlines Group
08 Aug - 21 Aug	LATAM Airlines Group
03 Aug - 10 Aug	LATAM Airlines Group
05 Aug - 15 Aug	LATAM Airlines Group
20 Aug - 23 Sep	Avianca

Also check the deals for one-way flights from Buenos Aires to San Jose in August.

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 Buenos Aires to San Jose in August from $451

Return flights