Which airport has the designator code ORD?

The designator code ORD corresponds to Chicago O'Hare International Airport. This code is derived from the original name of the airport, "Orchard Field," which was later simplified to its current designator. Chicago O'Hare is one of the busiest airports in the United States and serves as a major hub for both domestic and international flights. Understanding aviation designator codes is crucial for identifying airports quickly and accurately, particularly for pilots, air traffic controllers, and travel professionals. Knowing that ORD specifically identifies Chicago O'Hare can help avoid confusion with other airports, making it an essential part of aviation knowledge.