$98 Cheap Flights from Decatur (DEC) to Chicago (ORD)

View $98 flight on Sun, Dec 14, 2025Opens in a new window

Popular airlines from Decatur, IL (DEC) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from Decatur to Chicago (DEC-ORD)

Prices were available within the past 7 days and start at $98 for one-way flights and $149 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Dec 20 - Wed, Dec 24
DEC
Decatur
ORD
Chicago
$149 Roundtrip, found 6 hours ago
$149
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Dec 20 from Decatur to Chicago, returning Wed, Dec 24, priced at $149 found 6 hours ago
United
Sat, Dec 20 - Wed, Dec 24
DEC
Decatur
ORD
Chicago
$153 Roundtrip, found 6 hours ago
$153
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Dec 20 from Decatur to Chicago, returning Wed, Dec 24, priced at $153 found 6 hours ago
United
Wed, Nov 26 - Thu, Nov 27
DEC
Decatur
ORD
Chicago
$155 Roundtrip, found 4 days ago
$155
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 26 from Decatur to Chicago, returning Thu, Nov 27, priced at $155 found 4 days ago
United
Wed, Nov 26 - Tue, Dec 2
DEC
Decatur
ORD
Chicago
$157 Roundtrip, found 8 hours ago
$157
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Nov 26 from Decatur to Chicago, returning Tue, Dec 2, priced at $157 found 8 hours ago
United
Sat, Dec 20 - Wed, Dec 24
DEC
Decatur
ORD
Chicago
$159 Roundtrip, found 6 hours ago
$159
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Dec 20 from Decatur to Chicago, returning Wed, Dec 24, priced at $159 found 6 hours ago
United
Sat, Dec 20 - Wed, Dec 24
DEC
Decatur
ORD
Chicago
$163 Roundtrip, found 6 hours ago
$163
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Dec 20 from Decatur to Chicago, returning Wed, Dec 24, priced at $163 found 6 hours ago
United
Wed, Nov 26 - Thu, Nov 27
DEC
Decatur
ORD
Chicago
$165 Roundtrip, found 4 days ago
$165
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 26 from Decatur to Chicago, returning Thu, Nov 27, priced at $165 found 4 days ago
United
Wed, Nov 26 - Tue, Dec 2
DEC
Decatur
ORD
Chicago
$167 Roundtrip, found 8 hours ago
$167
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Nov 26 from Decatur to Chicago, returning Tue, Dec 2, priced at $167 found 8 hours ago
United
Wed, Nov 5 - Wed, Nov 12
DEC
Decatur
ORD
Chicago
$174 Roundtrip, found 22 hours ago
$174
Roundtrip
found 22 hours ago
Select United flight, departing Wed, Nov 5 from Decatur to Chicago, returning Wed, Nov 12, priced at $174 found 22 hours ago
United
Wed, Nov 5 - Tue, Nov 25
DEC
Decatur
ORD
Chicago
$195 Roundtrip, found 22 hours ago
$195
Roundtrip
found 22 hours ago
Select United flight, departing Wed, Nov 5 from Decatur to Chicago, returning Tue, Nov 25, priced at $195 found 22 hours ago
United
Tue, Dec 23 - Sun, Dec 28
DEC
Decatur
ORD
Chicago
$195 Roundtrip, found 4 days ago
$195
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 23 from Decatur to Chicago, returning Sun, Dec 28, priced at $195 found 4 days ago

Find the cheapest month to fly from Decatur (DEC) to Chicago (ORD)

April is typically the cheapest month to fly

From $148 - $198 per traveler.
Flights from Decatur (DEC) to Chicago (ORD)
Origin airport
Decatur
Destination airport
O'Hare Intl.
Airlines serving
United
Roundtrip price
$148
Distance
156 mi
Average flight time
1 hour 11 mins

Decatur to Chicago Flights

The cheapest times to fly from Decatur to Chicago

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 Decatur to Chicago are during the month of December. You can find some of the cheapest flights from Decatur to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Decatur to Chicago

Sunday is one of the best days to book for cheap flights from Decatur to Chicago: 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 Decatur to Chicago

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 Decatur to Chicago in 2025. You can also book with separate airlines for your outbound and return journeys, from $98 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 Decatur to Chicago 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 Decatur to Chicago 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 Decatur Airport (DEC) to O'Hare Intl. Airport (ORD) cost?
Snag a cheap one-way flight from $98 or cheap return flight from $149 from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD) 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 Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
Planning your getaway for December may help you find better deals, as it's the cheapest month for flights between DEC and ORD. You'll often find the lowest prices during the off-season.
Which airlines fly direct from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
Catch a direct flight with United Airlines and travel straight from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD).
What is the cheapest airline that flies from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
To find the cheapest airline flying from DEC to ORD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
On average, there is just 1 direct flight operating from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD) each day. If this doesn't suit your schedule, check out flights with a layover. Just customize your search results on Expedia to include one or more stops to find the next best option.
What are the most popular departure times for flights from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
Flights between DEC and ORD tend to be busiest at 3 PM. If you're after a more relaxed trip and potentially cheaper prices, choose a time when demand is lower.
What day of the week has the most flights from DEC to ORD?
If you jet off on a Friday, you'll get the greatest range of options for flights from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD).
What is the earliest flight from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
Hop on the earliest flight at around 10:00AM UTC-6, departing from Decatur Airport (DEC). You'll be traveling for around 1h 12m, landing at O'Hare Intl. Airport (ORD) at approximately 11:12AM UTC-6.
How long does it take to fly from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
The average flight time from DEC to ORD is 1 hour and 11 minutes, covering a total distance of 160 mi.
What airline has the least delays from DEC to ORD?
With 81% of journeys usually arriving on schedule, United Airlines has the best on-time performance for nonstop flights from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD). To check your flight status and get notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
To touch down at O'Hare Intl. Airport (ORD) without delays, select a flight that takes off from Decatur Airport (DEC) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Chicago from Decatur Airport (DEC)?
Compare your flight options from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD). This is the only Chicago airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Decatur Airport (DEC) to O'Hare Intl. Airport (ORD) last-minute?
Last-minute bookings from DEC to ORD are usually more expensive. To lock in the lowest prices, start looking for flights ahead of time. That being said, if you're flexible with your travel plans, you may land a cheap fare just before your departure.
Is it cheaper to book a DEC to ORD flight and hotel package?
Opting for a DEC to ORD flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of stays and then add car rentals, activities 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 Decatur Airport (DEC) to O'Hare Intl. Airport (ORD)?
If you booked your DEC to ORD flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.