United has round-trip flights from Chicago (ORD) to Sao Paulo (GRU) for $386, NONSTOP. Flights October to November. 7-day minimum stay required. No Thanksgiving dates.
This is the lowest price that we’ve seen for nonstop, round-trip flights on a non-budget airline since starting this blog. COPA (a budget carrier) had this (with stops) for $376 on March 03 2025.

