O"Hare International Air port; also known as O"Hare Air port or O"Hare Field, or simply O" Hare, is Chicago"s primary airport for flights to Chicago. It serves Chicago flights for both domestic and international destinations. It is a major airport located in the Chicago, Illinois, United States, located northwest of the Chicago Loop. This and other airports serving cheap flights to Chicagoare searchable with http://www.cheapflightstochicago.org.uk/. this site does not only let you know about the air ports serving flights to Chicago, but also the airlines offering cheap flights to Chicago from UK.  It serves as the primary and largest hub for United Airlines and as a hub for American Airlines. O"Hare International Airport is the fourth busiest airport in the world with respect to number of passengers passing through the air port. Just in the year 2009 64,397,782 passengers passed through O"Hare air port. O"Hare International air port has a great international presence for international Chicago U.S.A flights. It serves more than 60 foreign destinations. O"Hare has been voted the "Best Airport in North America" for 10 years, in the rating of Business Traveler Magazine (1998ð€“2003) and Global Traveler Magazine (2004ð€“2007). O"Hare has four operational passenger terminals: 1, 2, 3 and 5. O"Hare has 182 aircraft gates throughout four Terminals (1, 2, 3, and 5) and nine concourses (B, C, E, F, G, H, K, L, and M). All international arrivals at O"Hare for flights to Chicago Illinois U.S.A are handled at Terminal 5, other facilities include; A 24 hours operating automated people mover system, connected terminals, and remote parking lots to facilitate visitors having cheap Chicago flights.