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

Return flights

11 Mar - 18 Mar	Avianca
11 Mar - 15 Mar	Avianca
11 Mar - 22 Mar	Avianca
31 Mar - 12 Apr	Avianca
13 Mar - 21 Mar	Avianca
18 Mar - 23 Mar	Avianca
17 Mar - 31 Mar	Avianca
13 Mar - 20 Mar	Avianca
31 Mar - 11 Apr	Avianca
12 Mar - 15 Mar	Avianca
12 Mar - 16 Mar	Avianca
05 Mar - 16 Mar	Avianca
27 Mar - 01 Apr	LATAM Airlines Group
29 Mar - 04 Apr	LATAM Airlines Group
20 Mar - 04 Apr	Copa
28 Mar - 12 Apr	Avianca
28 Mar - 05 Apr	Copa

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

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from San Jose to Buenos Aires in March from 313€

Return flights