O'Hare International Airport

Chicago O'Hare International Airport (airport code ORD), the second busiest airport in the US and the world's 4th busiest, is just 20 miles from downtown Chicago with convenient connections by train, bus or car. Home to the tallest building in the Western Hemisphere (The Willis Tower), Chicago has 2.6 million residents and is the gateway to the third largest metropolitan area in the US covering three states-Illinois, Wisconsin and Indiana. From the largest exhibition space in North America (2.2 million SF at McCormick Place Convention Center) to its 26 miles of Lake Michigan shoreline, Chicago has everything for the business or pleasure traveler. Chicago is also corporate headquarters to United Airlines where O'Hare is its major hub. The airport has four terminals with three serving both domestic and international flights (departures only) and one terminal serving international flights only. The Hilton Chicago O'Hare Hotel is directly connected to the airport.