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

Return flights

20 Jan - 05 Feb	Aerolíneas Argentinas
27 Jan - 04 Feb	Avianca
30 Jan - 22 Feb	Avianca
27 Jan - 05 Feb	Avianca
27 Jan - 06 Feb	Avianca
21 Jan - 05 Feb	Aerolíneas Argentinas
22 Jan - 07 Feb	LATAM Airlines Group
27 Jan - 25 Feb	LATAM Airlines Group
16 Jan - 22 Jan	LATAM Airlines Group
30 Jan - 08 Feb	Flybondi
21 Jan - 02 Feb	Aerolíneas Argentinas
20 Jan - 23 Jan	Aerolíneas Argentinas
14 Jan - 23 Jan	JetSmart
18 Jan - 28 Jan	LATAM Airlines Group
13 Jan - 23 Jan	Sky Airline
24 Jan - 27 Jan	LATAM Airlines Group
17 Jan - 22 Jan	Aerolíneas Argentinas
16 Jan - 19 Jan	Avianca
15 Jan - 25 Jan	LATAM Airlines Group
12 Jan - 18 Jan	Sky Airline

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 $819

Return flights