The flight route from New York (NYC) to Atlanta (ATL) is an important thoroughfare in the country with between 40 and 53 flights a day. In a flight time of just over 2 and a half hours you will have crossed 750 miles. Airlines offering a direct flight option are: Delta, United, AirTran, and American.
There are several airlines offering a low-cost air ticket option so that you can have more to spend on your trip. For the cheapest tickets, book months ahead and avoid traveling during the school break and at weekends. Comparing prices on a comparison website should also help.
Passengers can fly from any of the five New York airports: JFK International (JFK), LaGuardia (LGA), Newark (EWR), Westchester and Long Island to Hartsfield-Jackson Atlanta International Airport (ATL) Atlanta. As one would expect buses are available at the airpor, along with a greyhound lightlink station, connecting travelers to nearby cities and even states.