Cheapest return flights from San Jose to Buenos Aires in September from $371

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

Return flights

11 Sep - 22 Sep Avianca
02 Sep - 16 Sep Avianca
11 Sep - 20 Sep Avianca
05 Sep - 19 Sep Avianca
12 Sep - 23 Sep Avianca
15 Sep - 24 Sep Copa
08 Sep - 15 Sep Copa
17 Sep - 27 Sep Copa
16 Sep - 27 Sep Copa
20 Sep - 26 Sep Copa

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

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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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