Delta Air Lines is the most prominent major U.S. carrier that remains largely non-unionized. While its pilots are represented by the Air Line Pilots Association (ALPA), the vast majority of its approximately 80,000 employees—including flight attendants and ground crews—do not belong to a union. This is a unique position compared to rivals like American, United, and Southwest, where nearly all employee groups are unionized. JetBlue was historically non-union, but in recent years, its pilots, flight attendants, and recently (as of February 2026) its dispatchers have voted to join unions like the Transport Workers Union (TWU). Smaller "ultra-low-cost" startup carriers like Breeze Airways and Avelo Airlines also began with non-union workforces, though organizing efforts are frequently active at these companies. Delta maintains its status through a combination of competitive "profit-sharing" programs and a corporate culture that emphasizes direct communication between management and staff, though union organizers continue to hold major membership drives at the airline.