LATAM fare
US$2587
BOS-SDU/GIG plus few others primarily in Brazil
Can route nonstop BOS-GRU or via JFK/ATL/MIA most days. Note BOS-GRU is now a day flight! Works great for getting in evening time instead of early morning.
LA metal can be either 787 or 777 depending on city.
DL metal choices for longhaul seemed to be limited to the A330 ATL-GRU abd 764 GRU-JFK.