AirHint found the following cheapest return flights from Sao Paulo (GRU) to San Jose (SJO) in December 2025 (see full year).

Return flights

11 Dec - 22 Dec	Avianca
01 Dec - 10 Dec	Avianca
01 Dec - 08 Dec	Avianca
04 Dec - 13 Dec	Avianca
09 Dec - 20 Dec	Avianca
11 Dec - 16 Dec	Avianca
02 Dec - 06 Dec	Avianca
10 Dec - 20 Dec	Avianca
14 Dec - 20 Dec	Copa
18 Dec - 23 Dec	GOL Linhas Aéreas
27 Dec - 04 Jan	Copa
30 Dec - 09 Jan	Copa
30 Dec - 08 Jan	Copa
18 Dec - 01 Jan	GOL Linhas Aéreas	direct
30 Dec - 10 Jan	Copa
25 Dec - 02 Jan	Avianca
28 Dec - 04 Jan	Avianca
27 Dec - 02 Jan	Avianca
26 Dec - 02 Jan	Avianca
27 Dec - 06 Jan	Avianca

Also check the deals for one-way flights from Sao Paulo to San Jose in December.

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 Sao Paulo to San Jose in December from 308€

Return flights