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

Return flights

10 Sep - 17 Sep	Copa
15 Sep - 22 Sep	United
10 Sep - 24 Sep	United
12 Sep - 26 Sep	United
16 Sep - 30 Sep	United
05 Sep - 19 Sep	United
07 Sep - 21 Sep	United
08 Sep - 22 Sep	United
09 Sep - 23 Sep	United
01 Sep - 23 Sep	Copa
29 Sep - 06 Oct	Avianca
29 Sep - 16 Oct	Copa
06 Sep - 03 Oct	Copa
23 Sep - 03 Oct	Copa
17 Sep - 01 Oct	United
22 Sep - 06 Oct	United
30 Sep - 14 Oct	United
26 Sep - 03 Oct	Copa
29 Sep - 05 Oct	Copa
18 Sep - 02 Oct	United

Also check the deals for one-way flights from Los Angeles to Sao Paulo 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 Los Angeles to Sao Paulo in September from 413€

Return flights