How much should you expect to spend for a flight from Ontario to Chicago?

Flight prices from Ontario to Chicago change depending on demand and time of booking.

Pick a travel date to see today’s available fares.

Studies show that flying midweek — like on a Tuesday or Wednesday — can be cheaper than weekend flights. Still, airfares change frequently, so check updated prices on Jetcost.

Planning flights between Ontario and Chicago? Don’t forget the airport options

Especially when flying to medium or large cities, it's worth checking all possible airport combinations before booking.

• Airports in Ontario: Ontario is the only airport in this city.
• Airports in Chicago: Chicago features 3 airports - Midway, O'Hare, Rockford.

Check for differences in transport costs to and from each airport — they affect your total spend. Choosing the right airport can make a real difference in price and timing.

Plan smarter: flights from Ontario to Chicago

Find the flight that fits your plans with Jetcost. You can filter results by stops, agencies, budget, time of day, and airline — all in one search.

Other popular destinations

Travelers flying to United States also checked out: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Comparing offers from multiple agencies helps you find the best price for the same route. You can also spot exclusive deals from individual airlines right in the results list.