S$164 Cheap Flights from Ontario to Chicago

View S$164 flight on Sat, 30 Aug, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Ontario to Chicago (ONT-ORD)

Prices were available within the past 7 days and start at S$164 for one-way flights and S$450 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$450 Return, found 1 day ago
S$450
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$450 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$491 Return, found 1 day ago
S$491
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$491 found 1 day ago
American Airlines
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$508 Return, found 1 day ago
S$508
Return
found 1 day ago
Select American Airlines flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$508 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$523 Return, found 1 day ago
S$523
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$523 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$528 Return, found 1 day ago
S$528
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$528 found 1 day ago
American Airlines
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$534 Return, found 1 day ago
S$534
Return
found 1 day ago
Select American Airlines flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$534 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$536 Return, found 1 day ago
S$536
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$536 found 1 day ago
United
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$538 Return, found 1 day ago
S$538
Return
found 1 day ago
Select United flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$538 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$541 Return, found 1 day ago
S$541
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$541 found 1 day ago
Delta
Fri, 31 Oct - Mon, 3 Nov
ONT
Ontario
ORD
Chicago
S$549 Return, found 1 day ago
S$549
Return
found 1 day ago
Select Delta flight, departing Fri, 31 Oct from Ontario to Chicago, returning Mon, 3 Nov, priced at S$549 found 1 day ago

Find the cheapest month to fly from Ontario (ONT) to Chicago (ORD)

September is typically the cheapest month to fly

From S$151 - S$367 per traveller.

Graph displaying average flight prices per month

Ontario to Chicago route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
O'Hare Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$449
Distance
2713 km
Average flight time
4 hours 3 mins

Perfect flights from Ontario to Chicago

Your Journey from Ontario to Chicago

Start your unforgettable journey with Expedia. Our broad selection of flights from Ontario to Chicago caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, Delta, American Airlines. Our selection of flights from Los Angeles - Ontario Intl. to O'Hare Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Ontario to Chicago Flights

Experience the joy of finding cheap flights from Los Angeles - Ontario Intl. to O'Hare Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$164 and roundtrip prices from S$450*.
 

Pre-Flight Essentials

Ensure a smooth journey from Ontario to Chicago with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Chicago

Picture yourself stepping off the plane in Chicago and immersing yourself in the unique atmosphere of Chicago. From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Ontario to Chicago Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Ontario to Chicago.
 

Beyond the Flight – Exploring Chicago

With Expedia, your adventure extends beyond the flight. Explore Chicago at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Ontario to Chicago with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Ontario to Chicago with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from ONT to O'Hare Airport?
If you're planning on travelling from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Intl. Airport (ORD), round-trip flights start from S$450. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't hang about. Book now and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Airport?
This can differ between air carriers, as each one has its own terms and conditions. Visit the Customer Service Portal, where you'll find easy instructions on how to cancel your flight online.
How do I find cheap flights from ONT to O'Hare Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ONT to O'Hare Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to O'Hare Intl. Airport (ORD)?
Expect to be cruising at altitude for a while, as the flight distance from Ontario Airport to ORD is 2,700 kilometres. Create a playlist of your favourite songs before you leave home to keep yourself entertained during your trip.
Which airlines fly direct from Ontario Airport to ORD?
If you want to travel straight from ONT to O'Hare Airport, you'll have to book a flight with one or more stops. Unfortunately, there are no airlines that fly directly between these airports.
Are ONT to ORD flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally nab a bargain, with some super cheap fares from Ontario Airport to ORD showing up a few weeks before the date of departure. If you'd rather plan ahead of time, Expedia compares and updates all the best flight deals continuously --- as early as a year in advance in some cases. It depends on the carrier though, as not all airlines release prices so far in advance.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Los Angeles Intl. to Chicago
S$321.40
*Available to Expedia members.