São Paulo is 3 hours ahead of Austin during US winter (CST), and 2 hours ahead during US summer (CDT). When it's 9:00 AM in Austin, it's 11:00 AM or 12:00 PM in São Paulo.
Brazil (most regions) uses BRT (UTC-3) year-round and no longer observes DST.
Business hours overlap significantly! 9:00 AM - 5:00 PM Austin corresponds to 11:00 AM - 8:00 PM São Paulo. The manageable time difference makes coordination convenient.
LATAM and connecting flights link Austin to São Paulo Guarulhos International Airport.