I just got this email from AeroMexico with their latest offer, it's only good through this weekend and has some VERY good fares ex-SA.
Seems to be booking ex-US too.
South american gateways are LIM/BUE/SCL/BOG/CCS/GUA/SAP/SJO/SAL, They do not include SAO.
US Gateways define the price, as advertised:
FAT/SAT/BRO - $399
MIA -$449
ATL/IAD/IAH/MCO/LAS/LAX - $499
PHX/SFO - $599
Books into N, credits to most of SkyTeam and LAN. Gets 100% in SkyPesos, 50% FlyingBlue, 125% on AR+.
Works to 4,25 cpm for 100% earning SCL-BRO. Could probably get a better rate depending on the routes. Dates are limited, and it shows on ITA. Buy on mexican site of Aeromexico.com
More info here