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

Return flights

05 Dec - 09 Dec	United	direct
16 Dec - 12 Jan	jetBlue
29 Dec - 14 Jan	LATAM Airlines Group
04 Dec - 13 Dec	United
17 Dec - 15 Jan	LATAM Airlines Group
03 Dec - 23 Dec	United
26 Dec - 02 Jan	LATAM Airlines Group
22 Dec - 16 Jan	LATAM Airlines Group
17 Dec - 12 Jan	Sun Country Airlines
19 Dec - 12 Jan	LATAM Airlines Group
17 Dec - 04 Jan	Sun Country Airlines
17 Dec - 05 Jan	Sun Country Airlines
19 Dec - 05 Jan	LATAM Airlines Group
24 Dec - 28 Dec	Delta
17 Dec - 24 Dec	United
19 Dec - 26 Dec	United

Also check the deals for one-way flights from Newark 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 Newark to Sao Paulo in December from $663

Return flights