AirHint found the following cheapest return flights from San Jose (SJO) to Buenos Aires (EZE) in August 2026 (see full year).

Return flights

17 Aug - 22 Aug	Avianca
10 Aug - 17 Aug	Avianca
04 Aug - 13 Aug	Avianca
13 Aug - 25 Aug	Copa
19 Aug - 26 Aug	Copa
19 Aug - 24 Aug	Copa
15 Aug - 26 Aug	Copa
19 Aug - 29 Aug	Copa
22 Aug - 29 Aug	Copa
15 Aug - 22 Aug	Copa

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

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from San Jose to Buenos Aires in August from $451

Return flights