There were 324,955 aircraft operations (takeoffs and landings) in 2014, about 900 per day. The airport is the twenty-first busiest airport in the United States by passenger count. In 2015, 22,141,610 passengers flew through Salt Lake City, representing a 5% increase from 2014. Following Delta and Delta Connection, the largest carriers are Southwest Airlines (11.11% market share), American Airlines (3.43%), and Alaska Airlines (2.56%). The airport is the fourth-largest hub for Delta Air Lines, as well as a hub for Delta Connection carrier SkyWest Airlines with nearly 300 daily departures, accounting for a 72.39% market share between October 2014 and September 2015. The airport is the closest commercial airport for more than 2.5 million people and is within a 30-minute drive of nearly 1.3 million jobs. Salt Lake City International Airport (IATA: SLC, ICAO: KSLC, FAA LID: SLC) is a civil-military airport about 4 miles (6.4 km) west of Downtown Salt Lake City, Utah, United States.