American Airlines has offered Los Angeles to Sao Paulo on sale for most of the year and $689 is certainly not the best deal we have seen with fares dropping into the $400s back in May.
Loyalty Traveler – Fare Alert American $443 LAX-Sao Paulo (May 19, 2015)
The reason I am posting this fare again is the widespread availability of the fare on nearly every date in October and November, combined with the long distance for this route at 12,312 flight miles round trip for nonstop flights LAX-GRU-LAX. This is a good route if you need additional miles to reach AAdvantage Platinum or Executive Platinum elite status qualification.
You can even plan for a destination beyond Sao Paulo, like Iguassu Falls IGU for a few dollars more at $697 round trip.
American Airlines Los Angeles LAX – Sao Paulo Brazil GRU – Iguassu Falls IGU
$697.52 Saturday October 31 – Saturday November 7
American Airlines Los Angeles LAX – Sao Paulo Brazil GRU
$680.24 Friday October 23 – Sunday October 25
Flight Miles: 12,312 miles on a weekend mileage run.
You can route your itinerary from LAX through JFK or MIA to earn additional miles. Miami is negligible additional miles at only about 250 miles each way for 12,828 miles round trip. New York JFK will add over 1,000 miles each way at 14,439 flight miles round trip, if you can find those connections for under $700.