GRU to Grand Hyatt
 

Arriving Sunday morning (9a) and flying out Fri morning (8a).

Any ideas on how long would it take by taxi to/from the Grand Hyatt?

Thanks.

45 minutes arriving on Sunday morning.

On Monday morning you'll be going the opposite way to rush hour traffic, but I would still budget 90 minutes as traffic can be unpredictable. In really bad afternoon rush hour it can take 3hrs or more!