O'Hare International Airport, located in Chicago, Illinois, is one of the busiest airports in the world. It serves as a major hub for both domestic and international flights, connecting millions of passengers each year. The airport features multiple terminals, offering a wide range of amenities, including shops, restaurants, and lounges. Opened in 1944, O'Hare was originally named Orchard Field and was later renamed in honor of Edward O'Hare, a World War II flying ace. The airport has undergone several expansions and renovations to accommodate increasing air traffic and improve passenger experience.