Cheapest return flights from San Jose to Buenos Aires in December from 434€

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

Return flights

01 Dec - 14 Dec LATAM Airlines Group
01 Dec - 09 Dec Avianca
04 Dec - 12 Dec Avianca
09 Dec - 16 Dec Avianca
03 Dec - 07 Dec Avianca
16 Dec - 29 Dec Avianca
21 Dec - 08 Jan Avianca
22 Dec - 08 Jan Avianca
15 Dec - 21 Dec Avianca
12 Dec - 21 Dec Avianca
01 Dec - 21 Dec Avianca
16 Dec - 01 Jan Avianca
23 Dec - 31 Dec Avianca
24 Dec - 02 Jan Avianca
26 Dec - 09 Jan Avianca
19 Dec - 02 Jan Avianca
20 Dec - 07 Jan Avianca
27 Dec - 08 Jan Avianca
16 Dec - 08 Jan Avianca
06 Dec - 13 Jan Avianca

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

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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