Update: TSA says baggage screening systems at Phoenix Sky Harbor International Airport are operational; 'We will continue testing the system throughout the night in preparation for tomorrow's scheduled operations, agency says - NBC News
Phoenix Sky Harbor International Airport (IATA: PHX, ICAO: KPHX, FAA LID: PHX) is a civil-military public airport 3 miles (5 km) southeast of downtown Phoenix, in Maricopa County, Arizona, United States. It is Arizona's largest and busiest airport, and among the largest commercial airports in the United States.
In 2015, the airport served 44,006,205 passengers, a 4.5% increase over the previous year making it the 11th busiest airport in the United States and 29th worldwide. It handles more than 1,200 aircraft operations a day, 100,000 passengers and more than 800 tons of cargo. Federal Aviation Administration (FAA) records show that the airport had 20,169,926 commercial passenger boardings (enplanements) in calendar year 2012 and 20,211,799 in 2011.
The airport serves as a hub for American Airlines and is the airline's fifth-largest with 307 daily departures to more than 77 destinations in four countries. American carries 54% of all passengers through PHX, making it the airport's largest carrier. Sky Harbor also serves as one of the largest focus cities for Southwest Airlines with 180 daily departures to 50 cities.