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

Return flights

21 Jan - 02 Feb	JetSmart
19 Jan - 04 Feb	Aerolíneas Argentinas
31 Jan - 14 Feb	LATAM Airlines Group
24 Jan - 05 Feb	Sky Airline
17 Jan - 30 Jan	Sky Airline
19 Jan - 31 Jan	LATAM Airlines Group
17 Jan - 31 Jan	LATAM Airlines Group
13 Jan - 27 Jan	Sky Airline
22 Jan - 26 Jan	Sky Airline
17 Jan - 01 Feb	Sky Airline
27 Jan - 25 Feb	JetSmart
27 Jan - 23 Feb	JetSmart
15 Jan - 30 Jan	Aerolíneas Argentinas
14 Jan - 11 Feb	Sky Airline
21 Jan - 27 Feb	Avianca
15 Jan - 13 Feb	Flybondi
13 Jan - 30 Jan	Sky Airline
08 Jan - 18 Jan	JetSmart
08 Jan - 16 Jan	JetSmart
16 Jan - 25 Jan	Flybondi

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 662€

Return flights