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◊ Applies to bookings for 3+ travelers. Book by Aug 31, 2018.  Learn more
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Book Flights from Ontario to Chicago

CheapOair.ca will help you to find the best deals on flights from Ontario to Chicago. With our search technology, effortlessly searching flight routes across hundreds of airlines has never been easier or more convenient. With CheapOair.ca, we aim to make it simple and quick to search, select and save on the flights that best suit your needs and budget.

No matter if you are traveling for business or pleasure, we offer a wide range of deals from business class discounts to last minute flight deals to destinations like Chicago. Whether you are planning ahead or looking for last minute tickets, CheapOair has the right flights at the right price. After booking your ticket, explore this page to view blog posts about this destination, learn more about hotels near CHI and read reviews from others who booked their flights with CheapOair.ca.

  • When does the first flight of the day depart from ONT? 7:05AM Southwest Airlines Flight #2252
  • When does the last flight depart to CHI? 7:05AM Southwest Airlines Flight #2252
  • What is the travel distance between Ontario and Chicago?657 miles
  • Which is the busiest day in terms of passengers flying from ONT to CHI?Friday
  • Which is the nearest airport to Chicago, Illinois?Midway International Airport
  • Which is the nearest airport to Ontario, California?Ogoki Post Airport

Chicago Travel Tools

  • Enjoy great savings on airfares with our Cheap Flights to Chicago
  • Saving big on Chicago hotels has never been easier! With CheapOair finding the right Montreal hotel that suit your need as well as budget is as easy as closing your eyes!
  • Make your trip comfortable as well as budget friendly with CheapOair discounted Chicago car rentals. Book now and save big!

User Reviews

5Loving Chicago

The sights were terrific and managed to see some places I had not visited before. Had a great time, as well, visiting with relatives and friends. - Mary  Jul 16, 2018
5Chicago

Amazing architecture! So much to do. Definitely recommend - Christina  Jul 11, 2018

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