AirHint found the following cheapest return flights from San Jose (SJO) to Buenos Aires (AEP) in November 2025 (see full year).

Return flights

25 Nov - 08 Dec	LATAM Airlines Group
18 Nov - 20 Nov	Avianca
18 Nov - 25 Nov	Avianca
20 Nov - 23 Nov	Avianca
09 Nov - 20 Nov	Avianca
20 Nov - 10 Dec	Avianca
17 Nov - 27 Nov	Avianca
09 Nov - 14 Nov	Avianca
03 Nov - 13 Nov	Avianca
04 Nov - 12 Nov	Avianca
03 Nov - 09 Nov	Avianca
27 Nov - 10 Dec	Avianca
28 Nov - 09 Dec	Avianca
11 Nov - 25 Nov	LATAM Airlines Group
22 Nov - 05 Dec	LATAM Airlines Group
08 Nov - 06 Dec	LATAM Airlines Group
11 Nov - 11 Dec	Avianca
15 Nov - 02 Dec	Avianca
27 Nov - 07 Dec	Avianca
27 Nov - 06 Dec	Avianca

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

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 San Jose to Buenos Aires in November from 394€

Return flights