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

Return flights

23 Jan - 03 Feb	JetSmart
26 Jan - 12 Feb	Avianca
22 Jan - 08 Feb	LATAM Airlines Group
21 Jan - 02 Feb	LATAM Airlines Group
29 Jan - 19 Feb	Avianca
27 Jan - 23 Feb	Avianca
27 Jan - 25 Feb	Avianca
28 Jan - 14 Feb	Flybondi
19 Jan - 04 Feb	Avianca
31 Jan - 24 Feb	Avianca
18 Jan - 29 Jan	LATAM Airlines Group
24 Jan - 28 Jan	LATAM Airlines Group
14 Jan - 28 Jan	Sky Airline
14 Jan - 23 Jan	Sky Airline
07 Jan - 12 Jan	Sky Airline
06 Jan - 20 Jan	JetSmart
01 Jan - 24 Jan	Avianca
12 Jan - 14 Jan	Avianca
12 Jan - 13 Jan	Avianca
09 Jan - 18 Jan	LATAM Airlines Group

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 $664

Return flights