Atlanta DeKalb Peachtree Airport is located in the DeKalb County section of Atlanta, Georgia, United States. The airport has been in operation since the early 1950s, when it was initially established as DeKalb County Airport. It was re-named Peachtree-DeKalb Airport in 1957, when the nearby community of Peachtree Corners was annexed into the City of Atlanta.

The name "DeKalb" was chosen to honor Baron Johann de Kalb, who fought in the American Revolutionary War. Baron de Kalb was a military officer from Germany who was killed during the Battle of Camden in 1780. The name "Peachtree" was chosen to honor the Peachtree Creek, a major tributary of the Chattahoochee River which runs through the area.

The airport code PDK was chosen by the International Air Transport Association (IATA). The code is derived from the airport's name and is commonly used to identify the airport to airlines and passengers.

Atlanta DeKalb Peachtree Airport is a small regional airport that serves primarily commuters and business travelers. It is located just 15 miles northeast of downtown Atlanta and is served by a variety of airlines including Delta, American, United, and Southwest. The airport currently averages around 250 flights per day and serves both domestic and international destinations.

The airport offers convenient access to downtown Atlanta and other nearby destinations such as Marietta, Alpharetta, and Decatur. It also offers a variety of amenities, including a wide selection of restaurants, shops, and car rental services.

Atlanta DeKalb Peachtree Airport is one of the busiest airports in the Atlanta area and is an important hub for travelers in the Southeast. It is also home to a variety of corporate and general aviation businesses, which employ thousands of people in the region.

The airport has undergone numerous expansions and renovations over the years and is currently undergoing a major expansion project that will add new concourses, terminals, and other improvements. The project is expected to be completed in 2021 and will make the airport even more accessible and convenient for travelers.