Cheap flights from Ontario to Chicago (ONT - CHI)

Flight FAQs

From Ontario to Chicago

Are flight prices decreasing from Ontario to Chicago due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Ontario and Chicago for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Ontario to Chicago to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travelers flying from Ontario to Chicago are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Ontario to Chicago have flexible cancellations due to COVID-19?

Some of our airline partners flying from Ontario to Chicago have new flexible policies in place due to COVID-19. American Airlines, United Airlines, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from Ontario to Chicago for under $100 on Cheapflights?

Yes, there are multiple flights from Ontario to Chicago for under $100. The cheapest flight booked recently is on Frontier for just $88, but on average you can expect to pay $148.

Are there nonstop flights from Ontario to Chicago for under $300 on Cheapflights?

Cheapflights has at least 7 direct flights from Ontario to Chicago under $300. A good price for a nonstop flight from Ontario to Chicago is less than $299.

Are there last-minute flights available from Ontario to Chicago for under $200?

There are currently 20+ open flights from Ontario to Chicago within the next 7 days for less than $200.

What days are nonstop flights available from Ontario to Chicago?

Nonstop flights are available for this route on the following days: Sunday, Tuesday, Wednesday, Friday.

Is Ontario weather warmer or cooler than Chicago?

You can imagine temperatures to be in the 95 °F range in July. The weather in Chicago is generally colder than Ontario's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long is the flight from Ontario to Chicago?

A quick flight from Ontario to Chicago can take about 7h 04m. Delta provides one of the quickest options available for as low as $273. Both multi-stop and nonstop flights can be found to your destination and back.

What is the cheapest airline to fly from Ontario to Chicago round-trip?

According to our current data, Frontier ($88), offers the cheapest pricing from Ontario to Chicago. Frontier is currently priced 67% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Ontario to Chicago one-way?

The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $50. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from Ontario to Chicago for a low price.