Cheapest return flights from San Jose to Buenos Aires in September from $489

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

Return flights

20 Sep - 30 Sep Avianca
13 Sep - 20 Sep Avianca
03 Sep - 17 Sep Avianca
03 Sep - 24 Sep Avianca
05 Sep - 11 Sep LATAM Airlines Group
19 Sep - 28 Sep LATAM Airlines Group
03 Sep - 11 Sep Copa
04 Sep - 11 Sep Copa
15 Sep - 26 Sep Avianca
16 Sep - 30 Sep Avianca
29 Sep - 12 Oct Copa
18 Sep - 05 Oct Copa

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

Skyscanner

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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