Avianca is having another decent sale from Miami to Sao Paulo! Fares start at $706! As usual be careful with Covid-19 restrictions as Brazil is a hotspot but these sample flights are in October so fingers crossed!
If you credit the flights to Aegean Miles & Bonus you would obtain 100% or 8390 Miles. Avianca LifeMiles and Lufthansa Miles & More credits at 150% so a total of 12586 miles. Most other Star Alliance programs credit at 125% or 10488 miles.