Being the primary Chicago airport, there are several airlines that offer their daily services to and from this airport in Chicago. The largest services are that of United Express / United Airlines. They make air travel an easy task for about fifty percent of passengers. The other major airline is the American Eagle/ American Airlines and nearly forty percent of travellers depend on their services in Chicago.

The other airlines serving this airport include Aer Lingus, Aeromexico Connect, Air Canada, Air France, Air India, Alaska airlines, Air Jamaica, Alitalia, All Nippon, American Connection etc besides various others.

http://flightaware.com/resources/airport/KORD

http://en.wikipedia.org/wiki/O%27Hare,_Chicago

Yes, of course. Naperville is a neighbouring city of Chicago, and here are a few details about the city. Naperville is the fifth biggest city in the state of Illinois in terms of population, and lies in the metropolitan area of Chicago.

During the 1990s, the city was witnessing a fast speed of development and growth. It has been regarded as an important business hub in the state, on the lines of Chicago, and Naperville was even recognized among the best places to initiate business development, as brought out by Fortune.

An interesting fact about the city of Naperville is that the protocol for street naming and for grid layout used here is the same as seen in the neighbouring city of Chicago.

http://en.wikipedia.org/wiki/Naperville,_Illinois

http://www.travelmath.com/cities-near/Chicago,+IL