Houston is well-served by a vast system of highways, with 4,206 lane miles of freeways and expressways in operation, per the Greater Houston Partnership. Major roadway improvements have greatly enhanced access to central Houston and plans for hundreds of additional miles of highways promise even greater mobility in the future.
Houston also is a crossroads for major highways - including Interstates 45 and 10 - offering easy regional travel to explore other parts of Texas. In addition, the Houston Airport System - comprising George Bush International Airport, William P. Hobby Airport and Ellington Airport - ranks as one of the largest multi-airport systems in the world. Through this vast airport system, Houston connects non-stop with approximately 121 domestic and 70 international destinations in 32 countries. Bush and Hobby airports operated more than 780,000 flights in 2014. Hobby inaugurated international service in 2015 and now serves more than 12 million passengers per year. The addition of several foreign flag carriers to Bush Intercontinental makes Houston the only city in the western hemisphere with nonstop flights to all six inhabited continents. Ellington Airport serves as a base of operations for the National Aeronautics and Space Administration (NASA) and corporate charters.