George Bush Intercontinental Airport is an international airport in Houston, Texas, United States, serving the Greater Houston metropolitan area. Located about 23 miles (37 km) north of Downtown Houston between Interstate 45 and Interstate 69/U.S. Highway 59 with direct access to the Hardy Toll Road expressway, George Bush Intercontinental Airport has scheduled flights to a large number of domestic and international destinations covering five continents. It is the busiest airport in Texas for international passenger traffic and number of international destinations, as well as being the second busiest airport in Texas overall, and the 15th busiest in the United States for total passenger traffic.