"Delta Air Lines Reintroduces Boarding Zones, Impacting Diamond Elites"

Delta Air Lines is reverting to an 8-zone boarding system starting May 1, with changes including Diamond elites boarding after business class and Delta 360 members pre-boarding ahead of zone 1. The move aims to simplify and streamline the boarding process, but it comes with complexities and confusion. The shift away from branded boarding is attributed to the changing passenger composition and the need to optimize boarding efficiency, although the most efficient boarding system in theory faces practical challenges and commercial considerations.