Core Viewpoint - United Airlines CEO Scott Kirby predicts that Spirit Airlines is likely to go out of business, stating that the discount airline model is no longer viable [1][2]. Company Summary - Spirit Airlines filed for Chapter 11 bankruptcy protection for the second time in a year, indicating ongoing financial struggles [2]. - The airline's first attempt at restructuring did not yield sufficient changes, leading to weaker customer demand and high operational costs upon its emergence from bankruptcy in March [2]. Industry Summary - The discount airline model, once considered profitable, is now viewed as obsolete according to industry leaders [1][2]. - Kirby's confidence in his prediction is based on his analytical skills, suggesting a data-driven approach to assessing the airline's future [2].