AirHint found the following cheapest return flights from New York (JFK) to Sao Paulo (GRU) in December 2025 (see full year).

Return flights

30 Dec - 25 Jan	jetBlue
31 Dec - 15 Jan	Frontier Airlines
31 Dec - 11 Jan	jetBlue
28 Dec - 22 Jan	Delta
27 Dec - 17 Jan	Copa
28 Dec - 19 Jan	Copa
28 Dec - 22 Jan	Delta	direct
28 Dec - 11 Jan	LATAM Airlines Group
30 Dec - 19 Jan	Copa
29 Dec - 31 Dec	jetBlue
27 Dec - 29 Dec	jetBlue
27 Dec - 01 Jan	Copa
29 Dec - 31 Dec	Delta	direct
27 Dec - 31 Dec	Copa
27 Dec - 29 Dec	Delta	direct
27 Dec - 31 Dec	GOL Linhas Aéreas	direct

Also check the deals for one-way flights from New York to Sao Paulo 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 New York to Sao Paulo in December from 637€

Return flights