A method for providing air traffic controlled flight of drones flying in to and out of an air traffic controlled space around an airport. The method includes causing the drones to congregate at a congregation area in the air traffic controlled space, causing the drones to fly from the congregation area as a group out of the air traffic controlled space under air traffic control, causing the drones to disperse from the group once the drones are out of the air traffic controlled space, causing the drones to fly to a package delivery location after they are dispersed to deliver the package, causing return drones to fly to a re-congregation area outside of the air traffic controlled space after they have delivered their packages, and causing the return drones to enter the air traffic controlled space as a group under air traffic control.