Lehigh Valley International Airport — Allentown/Bethlehem, United States

Lehigh Valley International Airport carries an international name but registers as a medium airport in practice, serving the twin cities of Allentown and Bethlehem in eastern Pennsylvania from 393 feet above sea level. Two runways give it more flexibility for scheduled traffic than many single-runway regional fields manage. Lehigh Valley is one of Pennsylvania's more populous metropolitan areas outside of Philadelphia and Pittsburgh, and the airport gives the region a direct air option instead of relying entirely on the roughly hour-plus drive to Philadelphia International. For business and leisure travelers based in the Lehigh Valley, this airport shortens the trip to catch a flight considerably.