Cheapest return flights from San Jose to Buenos Aires in September from 388€

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

Return flights

27 Sep - 03 Oct GOL Linhas Aéreas
06 Sep - 19 Sep GOL Linhas Aéreas
13 Sep - 20 Sep GOL Linhas Aéreas
13 Sep - 18 Sep GOL Linhas Aéreas
01 Sep - 19 Sep LATAM Airlines Group
14 Sep - 18 Sep LATAM Airlines Group
14 Sep - 20 Sep LATAM Airlines Group
15 Sep - 21 Sep LATAM Airlines Group
08 Sep - 29 Sep Avianca
16 Sep - 23 Sep Avianca
12 Sep - 25 Sep Avianca
12 Sep - 19 Oct Avianca
13 Sep - 19 Oct Avianca
13 Sep - 17 Oct Avianca
14 Sep - 19 Oct Avianca
19 Sep - 20 Oct Avianca
15 Sep - 19 Oct Avianca
30 Sep - 05 Oct Avianca
26 Sep - 04 Oct Avianca
14 Sep - 15 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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