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

Return flights

07 Jan - 28 Jan	Aerolineas Argentinas
20 Jan - 28 Jan	Aerolineas Argentinas
05 Jan - 11 Jan	GOL Linhas Aéreas
29 Jan - 19 Feb	Avianca
19 Jan - 26 Jan	Avianca
30 Jan - 06 Feb	Avianca
19 Jan - 04 Feb	Avianca
07 Jan - 02 Feb	Avianca
18 Jan - 26 Jan	Avianca
07 Jan - 12 Jan	Avianca
02 Jan - 18 Jan	Avianca
13 Jan - 20 Jan	Avianca
04 Jan - 18 Jan	Avianca
19 Jan - 29 Jan	Avianca

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

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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Cheapest return flights from Buenos Aires to San Jose in January from 651€

Return flights