What city does the code ORD correspond to?

The city code ORD corresponds to Chicago, Illinois, specifically O'Hare International Airport. This airport is one of the busiest in the United States and serves as a major hub for domestic and international flights. The code derives from the original name of the airport, which was Orchard Field, and the "ORD" designation has become widely recognized in the aviation industry and among travelers.

While Orlando, Oakland, and Omaha have their own distinct airport codes (MCO for Orlando, OAK for Oakland, and OMA for Omaha), they do not share the ORD code. Thus, Chicago O'Hare is uniquely identified by this specific code, making it essential for travelers and those familiar with airline city codes to recognize and understand its significance.