Two large domestic discount airlines will become one amidst a glut of airlines flying ghost flights:  

https://www.forbes.com/sites/michaelgoldstein/2022/02/07/will-the-merger-between-frontier-and-spirit-airlines-fly/?sh=63b5106f3c78    

https://www.wired.com/story/airplanes-empty-slots-covid/ 

https://www.marketexplainer.com