As of 2015, the most popular airlines in the United States according to the number of passengers flown are American Airlines, Southwest Airlines, Delta Airlines, United Airlines and JetBlue. Alaska Airlines and Spirit Airlines also rank among the most popular airlines in the United States.
The United States' most popular airline is American Airlines. Based in Fort Worth, Texas, American Airlines flew 197.3 million customers in 2014 after merging with US Airways. Its hub airports are Charlotte Douglas International Airport and Dallas/Fort Worth International Airport. The country's second most popular airline, Delta Air Lines, had 5,400 daily departures in 2014 and carried 171.3 million passengers. It has hubs in Atlanta, Cincinnati, Detroit and New York City. Southwest Airlines follows as the third most popular airline, with 135.7 million passengers and 3,600 daily departures in 2014.
Four years after its merger with Continental Airlines, United Airlines ranks as the fourth most popular airline in the U.S., with 4,935 daily departures in 2014 along with 138 million passengers. JetBlue, an airline based in New York, flew 32 million passengers and reported 825 daily departures. Serving 29.2 million passengers and claiming 880 daily departures, Alaska Airlines based in Seattle makes the list of most popular airlines.