Cheapest return flights from San Jose to Buenos Aires in April from 375€

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

Return flights

20 Apr - 18 May Avianca
08 Apr - 15 Apr Avianca
07 Apr - 29 Apr Avianca
20 Apr - 27 Apr Avianca
20 Apr - 04 May Avianca
29 Apr - 13 May LATAM Airlines Group
07 Apr - 24 Apr Avianca
10 Apr - 24 Apr Avianca
17 Apr - 24 Apr Avianca
08 Apr - 24 Apr Avianca
06 Apr - 12 Apr Avianca
01 Apr - 10 Apr Avianca
18 Apr - 23 Apr Avianca

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

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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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