San Antonio International Airport is a commercial airport in San Antonio, Texas. The airport has three runways, and its elevation is 809 feet above sea level. SAT is a Class C airport. In 2005, San Antonio International Airport handled 7,425,281 passengers, up 6.1 percent from 2004 and breaking the previous record of 7,305,335 set in 2000. SAT averages 260 daily departures and arrivals at its 27 gates, which serve 11 airlines flying to 34 metro areas, including Mexico City and Monterrey. The airport's top-ranked destinations are Dallas, Houston, Las Vegas, Chicago, Baltimore, New York, Los Angeles, Phoenix, Atlanta and Washington, D.C. As of 2004, Southwest Airlines is the airport's largest passenger air carrier, enplaning almost 36 percent of the airport's total passengers. American, Continental, and Delta are the next three largest carriers.