Cheapest return flights from San Jose to Buenos Aires in December from 599€

Best time to book flights for San Jose (SJO) to Buenos Aires (AEP) flights at AirHint

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 - 08 Dec LATAM Airlines Group
25 Dec - 30 Dec LATAM Airlines Group
19 Dec - 30 Dec LATAM Airlines Group
25 Dec - 31 Dec LATAM Airlines Group
25 Dec - 02 Jan LATAM Airlines Group
27 Dec - 11 Jan Avianca
27 Dec - 06 Jan Avianca
15 Dec - 18 Dec Avianca
15 Dec - 23 Dec Avianca
20 Dec - 06 Jan Avianca
20 Dec - 25 Dec Avianca
22 Dec - 11 Jan Avianca
28 Dec - 13 Jan United

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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