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

Return flights

03 Dec - 10 Dec	United
10 Dec - 22 Jan	Spirit Airlines
14 Dec - 20 Jan	Spirit Airlines
02 Dec - 06 Dec	Spirit Airlines
11 Dec - 20 Jan	Spirit Airlines
14 Dec - 18 Jan	Spirit Airlines
03 Dec - 16 Dec	United
02 Dec - 16 Dec	United
07 Dec - 19 Dec	Spirit Airlines
31 Dec - 11 Jan	Air Canada
26 Dec - 23 Jan	Delta
08 Dec - 17 Jan	Delta
08 Dec - 18 Jan	Delta
28 Dec - 24 Jan	Delta
07 Dec - 18 Jan	Delta
12 Dec - 15 Dec	Spirit Airlines
11 Dec - 27 Dec	Spirit Airlines
18 Dec - 31 Dec	Spirit Airlines
25 Dec - 28 Dec	United
09 Dec - 29 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 518€

Return flights