The implementation of Delta Airlines New delta boarding zones is a big step toward enhancing boarding efficiency. Delta minimized bottlenecks and delays related to boarding by dividing passengers into clearly defined groups. The new zones are clearly explained on boarding cards and at the gate, so passengers can easily determine when it's their board turn. This coordinated method not only allows passengers to board the plane in a more orderly manner, but it also decreases the time the aircraft spends at the gate, resulting in better on-time performance for Delta flights.