Cheap Flights from Chicago (MDW) to Ontario (ONO)

Popular airlines from Chicago Midway Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)

Flights from Chicago (MDW) to Ontario (ONO)
Origin airport
Midway Intl.
Destination airport
Ontario Municipal
Distance
1480 mi

Chicago to Ontario Flights

The cheapest times to fly from Chicago to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Ontario are during the month of . You can find some of the cheapest flights from Chicago to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Ontario

Sunday is one of the best days to book for cheap flights from Chicago to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal) cost?
Secure a cheap one-way flight or cheap return flight from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)?
Traveling in is a great way to save, as it's the cheapest month for flights between MDW and ONO. You'll usually find the lowest prices during off-peak months.
What is the cheapest airline that flies from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest MDW to ONO flight.
How many flights per day from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)?
You'll need to book a flight with a layover if you're traveling from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from MDW to ONO?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)?
To avoid possible delays on the Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal) route, fly before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal) last-minute?
Waiting until just before your departure to book your flight from MDW to ONO often results in higher prices. While you may come across some last-minute offers, there's no guarantee. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book a MDW to ONO flight and hotel package?
Opting for a MDW to ONO flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our wide range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Midway Intl. Airport (MDW) to Ontario, OR (ONO-Ontario Municipal)?
It's usually possible to reschedule or cancel your MDW to ONO flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.