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

Return flights

24 Sep - 07 Oct	Avianca
24 Sep - 01 Oct	Avianca
24 Sep - 30 Sep	Avianca
23 Sep - 21 Oct	Air Canada
23 Sep - 07 Oct	Air Canada
25 Sep - 01 Oct	Avianca
21 Sep - 28 Sep	United
26 Sep - 09 Oct	Avianca
20 Sep - 27 Sep	Delta
22 Sep - 07 Oct	Avianca
22 Sep - 29 Sep	United
30 Sep - 07 Oct	Avianca
24 Sep - 06 Oct	Avianca
16 Sep - 23 Sep	Avianca
26 Sep - 30 Sep	Avianca
22 Sep - 25 Sep	Avianca
16 Sep - 22 Sep	Avianca
23 Sep - 16 Oct	Avianca
23 Sep - 30 Sep	Avianca
16 Sep - 25 Sep	Avianca

Also check the deals for one-way flights from Sao Paulo to Newark in September.

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 Newark in September from 466€

Return flights