United CEO says ultra-low-cost airlines like Frontier are 'going out of business' thanks to poor customer service and a 'flawed' business model

Tech Insider : Travel
Scott Kirby on stage in front of United logo.
Scott Kirby took a jab at ultra-low-cost carriers during an interview with The Air Show podcast on Monday.

Hyoung Chang/Getty Images

Subscribe to ultra-low-cost-carriers