The lowest wages are earned by the newest flight attendants. This structure is something unions have bargained for over decades and multiple contracts. Low wages to start, and higher wages as seniority grows, is something that benefits more senior crewmembers. The airline ultimately doesn’t care nearly as much about how the cost of flight attendants is distributed across flight attendants.
Though the union itself is responsible for low starting wages, AFA-CWA union head Sara Nelson says that it’s actually… sexism.