The Santa Fe Regional Airport serves the greater Santa Fe and Los Alamos areas. It is the second busiest commercial airport in New Mexico behind the Albuquerque International Sunport. It is one of the highest in elevation in the United States at 6348 feet above sea level. The airport is currently served by American Eagle with regional jet flights to Dallas/Fort Worth and to Phoenix, and by United Express with regional jets to Denver. The airport also sees a considerable amount of private business jet activity by NetJets and many other companies. There are two fixed base operators; Jet Center at Santa Fe which has a facility just northeast of the terminal, and Signature Flight Support SAF just south of the terminal.