what is special about chicago airport wikipedia
North America > United States of America > Midwest (United States of America) > Illinois > Chicagoland > Chicago > O'Hare International Airport. O'Hare International Airport (IATA: ORD) is one of the biggest and busiest airports in the world. It serves the city of Chicago and the rest of the Chicagoland area, with connecting flights to smaller cities throughout the Midwest.