CA $215 Cheap Flights from Ontario Intl. Airport (ONT) to Chicago (MDW)

View CA $215 flight on Thu, May 28, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Chicago Midway Airport (MDW)

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Cheap flights from Ontario Intl. Airport (ONT) to Chicago (MDW)

Prices were available within the past 7 days and start at CA $215 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What is the cheapest month to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
September is typically the cheapest month to fly from Ontario International Airport (ONT) to Midway International Airport (MDW), with average round-trip fares of approximately 922 CAD. This is about 21% lower than the average price throughout the year. September often sees lower prices as the summer travel rush winds down and before the holiday season picks up. Other cheap months to fly from Ontario International Airport (ONT) to Midway International Airport (MDW) include February and May.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
Enter ONT to MDW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
The best airline to fly with from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. WN offers the most daily flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
Based on booking data from the past year, the cheapest months to fly from Ontario International Airport (ONT) to Chicago Midway International Airport (MDW) are typically September and May. You can expect average round-trip flight prices around 922 CAD during these times. Choosing to travel in these months can help you find more budget-friendly options for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
There is approximately 1 nonstop flight per day from Los Angeles - Ontario Intl. (ONT) to Midway Intl. (MDW). For even more choice, look at flights that include layovers, as there are around 54 connecting flights per day. Some common connection points include Harry Reid Intl. (LAS), Sky Harbor Intl. (PHX), and Denver Intl. (DEN).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
The earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) typically departs at approximately 1:55 AM local time, operated by F9. This is a seasonal service active in November. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
For flights from Los Angeles - Ontario Intl. (ONT) to Midway Intl. (MDW), you'll typically find the most options on Thursday, with around 31 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Southwest Airlines, Delta Air Lines, and United Airlines. Looking at the overall week, Thursday offers notably more flight options compared to other days.
What are the most popular departure times for flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
The most popular departure times for flights from Los Angeles - Ontario Intl. (ONT) to Midway Intl. (MDW) are in the morning, between 6am and 9am. About 25% of passengers prefer this time window. This timing works well for many travelers as it allows for an early start to their journey, often arriving at their destination before midday.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
Direct flights from ONT to MDW usually take about 3 hours 50 minutes, traveling roughly 1,702 miles. If you opt for a connecting flight, expect to add around 1 hour 40 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
Select the "Business class" and "First class" filters when looking for ONT to MDW flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Chicago from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into Midway Intl. (MDW) and O'Hare Intl. (ORD) in Chicago. Some flights may connect through major hubs like Harry Reid Intl. (LAS), Sky Harbor Intl. (PHX), Denver Intl. (DEN) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Chicago, IL (MDW-Midway Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Midway Intl.
Distance
2723 km
Average flight time
7 hours 18 mins

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Los Angeles to Chicago Flights

The easy way to book your flights from Ontario Intl. Airport to Chicago 

With Expedia, it’s simple to find and book flights to Chicago from Ontario Intl. Airport whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 13 airlines that cover this route. There are nonstop flights to Midway Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario Intl. Airport to Chicago today, tomorrow, or this week.  

 

Save dollars with cheap flights from Ontario Intl. Airport, ONT to Midway Intl., MDW 

Sort your search results by price to find great deals on your flight from Ontario Intl. Airport to Chicago—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Chicago from Ontario Intl. Airport currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Chicago  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Chicago from Ontario Intl. Airport 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Chicago with Expedia today.

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