Air Force One Is Top Priority
AF1 pilots don’t ever need to worry about air traffic when they’re flying the friendly skies. The presidential plane is automatically placed at the highest priority level so the POTUS won’t have to wait in line for commercial airplanes to take off.
All air traffic is grounded when AF1 takes off or lands from a commercial airport. But the plane doesn’t always use commercial airports. Most often, AF1 flies in and out of military airports.