$83 Cheap Flights from Ontario (ONT) to Chicago (ORD)

Bundle Your Flight + Hotel & Save!

Featured airlines

Top nine airline logos for desktop

    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash

Cheap Flights from Ontario to Chicago (ONT-ORD)

Prices were available within the past 7 days and start at $83 for one-way flights and $153 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Flights from Ontario (ONT) to Chicago (ORD)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, United
Roundtrip price
$153
Distance
1695 mi

Ontario to Chicago Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Ontario to Chicago offer the perfect respite. Not only does exploring Chicago provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Ontario to Chicago may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from ONT to ORD today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Chicago are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Chicago more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Chicago is $83 now!

Frequently asked questions

How much is a one-way flight from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Airport?
Get ready to snap up a bargain, because one-way Ontario flights to Chicago start from $75. This is based on the best price found on Expedia for this journey with a departure date in the next three months. This airfare is for an Frontier Airlines flight, taking off from ONT on June 11 2024 and touching down at O’Hare Intl. Airport (ORD). This price was updated on May 23 2024 and has not changed since.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to ORD last minute?
When it’s time to book your flights, it’s always better to be prepared. While you may be able to score a deal on an ONT to ORD flight at the last minute, prices usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days in advance. For international trips it’s between three and four months.
What is the cheapest airline flying from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Intl. Airport (ORD) in the next 90 days?
With tickets starting at $75 for a flight from Ontario to Chicago, Frontier Airlines is the cheapest airline found on Expedia. This price is based on airfares found on Expedia with a departure date within the next 90 days and was updated on May 23 2024 and has not changed since. The flight takes off from Ontario Airport on June 11 2024 and arrives at O’Hare Airport.
What's the cheapest price for a flight from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Intl. Airport (ORD) next month?
With a one-way flight from Ontario to Chicago on sale for $75, you’ll have more money left in your hand for sightseeing. This price was found after searching all available flights on Expedia within the next 30 days. This particular service takes off from Los Angeles - Ontario Intl. Airport (ONT) on June 11 2024, touches down at O’Hare Intl. Airport (ORD) and is with Frontier Airlines. The price was last updated on May 23 2024 and has not changed since.
What airports do you fly into for Chicago from Los Angeles?
O’Hare Intl. Airport (ORD), Midway Intl. Airport (MDW) and Lewis University Airport (LOT) are your options when flying from Los Angeles to Chicago. Approximately 16 mi northwest of downtown Chicago, O’Hare Intl. Airport (ORD) is the city’s principal hub. Consider factors such as flight schedules and the distance to your hotel before deciding where you fly into. Wrigley Field and Millennium Park are two great attractions to put on your to-do list when you arrive.
Can I change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to ORD?
You can easily make changes to your Ontario Airport to O’Hare Intl. Airport (ORD) flight via the Expedia Trips portal. But before you make any amendments, read the rules in your itinerary to find out what the carrier will let you do and if change fees apply. Some airlines charge a change fee per person, on top of any difference in ticket prices. But if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also stop by our Customer Service portal for further information and to connect with our Virtual Agent.
Chicago nearby Airports
Ontario nearby Airports
*Available to One Key members.