Atlanta has 2 airports and Cape Town has 1 airport.
Hartsfield - Jackson Atlanta International Airport (ATL)
http://www.atl.com/ km from Atlanta city center.
Dekalb-Peachtree Airport (PDK)
km from Atlanta city center.
Which airport in Atlanta is better?
The closest airport to Atlanta city center is Hartsfield - Jackson Atlanta International Airport (ATL) with km distance. The quickest way to get to city center is to take a bus from Hartsfield - Jackson Atlanta International Airport (ATL), trip will take 20 min.
Hartsfield - Jackson Atlanta International Airport (ATL) is usually the main choice for traveling to Atlanta. If you want to get to Atlanta faster, use the bus. The trip will take about 20 min.