O'Hare International Airport is one of the busiest airports in the world, located in Chicago, Illinois. It serves as a major hub for both domestic and international flights, connecting millions of passengers each year. The airport is named after Edward O'Hare, a World War II flying ace, and features multiple terminals equipped with various amenities. Opened in 1942, O'Hare has undergone numerous expansions and renovations to accommodate increasing air traffic. It is known for its extensive flight network, offering services from major airlines like United Airlines and American Airlines. The airport also provides ground transportation options, including buses and trains, making it accessible for travelers.