Anywhere from 16 to 18 hours depending on which bus you take. But it's only a 10-hour drive if you go in a car. Look on craigslist (www.craigslist.org) under the city "Atlanta" and then under "rideshare" and you may find someone who is going there and can take you.
We need a connection from Atlanta Airport to Miami Airport on March 26th, 2010 for two persons (Adults)