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

Return flights

04 Dec - 08 Dec	Avianca
05 Dec - 18 Dec	Avianca
09 Dec - 13 Dec	Avianca
06 Dec - 16 Dec	GOL Linhas Aéreas	direct
03 Dec - 13 Dec	Avianca
11 Dec - 22 Dec	Copa
01 Dec - 10 Dec	Copa
16 Dec - 23 Dec	Avianca
16 Dec - 22 Dec	Avianca
13 Dec - 22 Dec	Avianca
18 Dec - 20 Jan	GOL Linhas Aéreas	direct
17 Dec - 01 Jan	Avianca
25 Dec - 01 Jan	Avianca
14 Dec - 11 Jan	Copa
13 Dec - 10 Jan	GOL Linhas Aéreas
26 Dec - 01 Jan	Avianca
31 Dec - 07 Jan	Avianca
31 Dec - 11 Jan	Avianca
30 Dec - 09 Jan	Avianca
30 Dec - 08 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 326€

Return flights