Cheapest return flights from San Jose to Buenos Aires in September from 414€

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

Return flights

15 Sep - 27 Sep Avianca
17 Sep - 03 Oct Avianca
04 Sep - 09 Sep LATAM Airlines Group
04 Sep - 11 Sep LATAM Airlines Group
08 Sep - 15 Sep LATAM Airlines Group
02 Sep - 11 Sep LATAM Airlines Group
11 Sep - 19 Sep Avianca
11 Sep - 20 Sep Avianca
08 Sep - 19 Sep Avianca
16 Sep - 28 Sep Avianca
15 Sep - 28 Sep Avianca
17 Sep - 08 Oct Avianca
24 Sep - 04 Oct Avianca
29 Sep - 07 Oct Avianca

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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