$84 Cheap Flights from Ontario to Chicago

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Los Angeles - Ontario Intl. to O'Hare Intl.

Amazing ONT to ORD Flight Deals

The cheapest flights to O'Hare Intl. found within the past 7 days were $168 round trip and $84 one way. Prices and availability subject to change. Additional terms may apply.

Best O'Hare Intl. Flight and Hotel Packages

O'Hare Intl. flight + hotel packages - economy flights

Hyatt Rosemont Near O'Hare
DoubleTree by Hilton Chicago - Schaumburg
Fairfield Inn & Suites by Marriott Lombard
Holiday Inn O'Hare, an IHG Hotel
Holiday Inn Express & Suites Prospect Heights, an IHG Hotel
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Frequently asked questions

Can I catch a flight from ONT to O'Hare Intl. Airport (ORD) right now?
For any present ORD quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught up en route.
Are there direct flights from Ontario Airport to O'Hare Intl. Airport (ORD)?
Multiple airlines offer passengers flights straight from Ontario Airport to O’Hare Intl. Airport (ORD). These include American Airlines and Frontier Airlines — check them out if you’d like to land at your destination with no changeover.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to O’Hare Intl. Airport (ORD), please visit our Customer Service Portal.
How long is the flight from ONT to O'Hare Airport?
Flights between Ontario and Chicago usually take around 5 hours and 56 minutes in total. Make the most of that time in the air by napping, reading, checking out the in-flight entertainment or doing all three.
What is the flight distance from Los Angeles - Ontario Intl. Airport (ONT) to ORD?
You’ll have to journey about 1,700 mi from Los Angeles - Ontario Intl. Airport (ONT) to O’Hare Intl. Airport (ORD) before you can kick-start your thrilling adventures. Grab a coffee from the drink cart and watch some of your favorite TV shows. You’ll have lots of time!
What airlines fly from ONT to O'Hare Airport?
You can choose from a few airlines advertising direct flights between Ontario and Chicago. American Airlines (AA) is one of the most reputable. This carrier operates around 34 flights every month. If you need more options, look up the deals on offer from Frontier Airlines (F9). This airline operates 4 flights each month. Between the two, you’re bound to find a deal to suit your needs.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with United Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From Los Angeles - Ontario Intl.
Traveling To O'Hare Intl.
Shortest Flight Time hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price $168

Route Info

Flight path for flights from LA/Ontario International Airport to O'Hare International Airport

1,771.00 miles

Airlines & Aircraft Used on ONT to ORD Flight Routes

Airline Carrier
American Airlines
Airbus A330-200
American Airlines
Boeing 737 all pax models
Delta Air Lines
Canadair Regional Jet 200
Delta Air Lines
Canadair Regional Jet 900

Discover our best flights from Ontario ONT to Chicago ORD. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Ontario ONT to Chicago ORD at the right price  

Airfares to Chicago ORD from Ontario ONT currently cost between $168 and $267. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Ontario ONT to Chicago ORD 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Ontario ONT to Chicago ORD on Travelocity starting at $84. Prices and availability subject to change. Additional terms may apply. 


Get to Chicago ORD from Ontario ONT quicker with direct flights. 

Get to Chicago faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to ORD from ONT to take around hour(s) min(s).  


Find our cheapest airfares for flights from Ontario ONT to Chicago ORD

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to ORD from ONT. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Ontario ONT to Chicago ORD today 

If you’re flexible about when you travel, December is usually the cheapest month to fly from Ontario ONT to Chicago ORD. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Chicago ORD from Ontario ONT 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to ORD from ONT have this option.  


Travel with confidence when you book flights to Chicago ORD from Ontario ONT with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.