United CEO expects struggling Spirit Airlines will go out of business 'because I'm good at math'
1. United CEO predicts Spirit Airlines may go out of business soon. 2. Spirit Airlines filed for Chapter 11 bankruptcy for the second time recently. 3. High costs and low demand hinder Spirit's recovery efforts. 4. Rivals like United and JetBlue are expanding routes Spirit has recently cut. 5. Kirby criticizes discount airline models, claiming they are unsustainable.