In the years following the COVID-19 pandemic, which completely shut down the global commercial aviation industry, legacy carriers have had to alter their business models completely. Airlines like 
Delta Air Lines, United Airlines, and American Airlines are legacy carriers, and they have historically thrived by operating flights that cater to the schedules and needs of business travelers, who are statistically the highest-spending travel demographic. Airlines like Delta and United derive much of their revenue from just a small portion of business travelers.