Find great value on Spirit Airline flights from DAL to CHI when you book with CheapOair! Walk down the scenic alleys and witness the majestic skyscrapers, go for shopping at high-fashion boutiques & multilevel malls along the Magnificent Mile and go for picnicking at the Lake Michigan, Chicago captivates vacationers from all over the world. Chicago is a popular city in the U.S. state of Illinois and is the third most populous city in the United States. This majestic city is known by several nicknames and among them the most popular is “Windy City”. Take a guided tour of this wonderful city and throng all the travel hotspots. Enjoy the large collection of French Impressionist paintings at the Art Institute of Chicago. Keep your kids and teenagers engaged by taking them to the Chicago Children’s Museum.