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O'Hare Intl

$98+ Cheap flights from Decatur, IL (DEC) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — ORD
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Decatur to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated agosto 14, 2025.

Round-trip from

$149
(United Airlines)

One-way from

$98
(United Airlines)

Popular in

February

Cheapest in

June

Average price

$198

Good round-trip deal

$374 or less

Good one-way deal

$238 or less
From Decatur Arpt to Chicago O'Hare Intl
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One-way flight from Decatur Arpt to Chicago O'Hare Intl
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Highest demand for flights based on searches. 58% potential increase in price ($286 potential increase over avg. RT price).
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Cheapest flight prices on average. 18% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Decatur Arpt to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Decatur Arpt to Chicago O'Hare Intl.
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Find flight deals from Decatur to O'Hare Intl

Cheapest flights from Decatur to O'Hare Intl
Explore the most affordable flight options available from Decatur to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/69:42 amDEC - ORD
Nonstop1h 15mUnited Airlines
sáb. 9/207:50 amORD - DEC
Nonstop1h 06mUnited Airlines
Deal found 8/14$149
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/299:42 amDEC - ORD
Nonstop1h 15mUnited Airlines
mar. 9/27:50 amORD - DEC
Nonstop1h 06mUnited Airlines
Deal found 8/14$159
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/67:08 pmDEC - ORD
Nonstop1h 11mUnited Airlines
sáb. 1/34:50 pmORD - DEC
Nonstop1h 01mUnited Airlines
Deal found 8/13$170
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/239:42 amDEC - ORD
Nonstop1h 15mUnited Airlines
sáb. 8/307:50 amORD - DEC
Nonstop1h 06mUnited Airlines
Deal found 8/14$174
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/269:42 amDEC - ORD
Nonstop1h 15mUnited Airlines
vie. 8/294:50 pmORD - DEC
Nonstop1h 09mUnited Airlines
Deal found 8/12$191
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/279:44 amDEC - ORD
Nonstop1h 11mUnited Airlines
dom. 11/307:45 amORD - DEC
Nonstop1h 03mUnited Airlines
Deal found 8/12$220
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/199:42 amDEC - ORD
Nonstop1h 15mUnited Airlines
sáb. 8/237:50 amORD - DEC
Nonstop1h 06mUnited Airlines
Deal found 8/12$291
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/186:55 pmDEC - ORD
Nonstop1h 08mUnited Airlines
jue. 8/214:50 pmORD - DEC
Nonstop1h 09mUnited Airlines
Deal found 8/12$341
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/149:45 amDEC - ORD
Nonstop1h 10mUnited Airlines
jue. 8/145:00 pmORD - DEC
Nonstop1h 03mUnited Airlines
Deal found 8/12$391

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
Use the filters below to find and compare flights from Decatur to Chicago O'Hare Intl Airport that are best for you.

Fly from

Decatur

Fly to

O'Hare Intl

Route

Depart

Return

Price

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

jue. 8/28

6:55 pm-8:10 pm

Nonstop1h 15m

Chicago O'Hare Intl

lun. 9/1

4:50 pm-5:59 pm

Nonstop1h 09m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

sáb. 9/6

9:42 am-10:57 am

Nonstop1h 15m

Chicago O'Hare Intl

sáb. 9/20

7:50 am-8:56 am

Nonstop1h 06m

$149

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

mié. 10/1

9:38 am-10:53 am

Nonstop1h 15m

Chicago O'Hare Intl

mié. 10/15

7:45 am-8:51 am

Nonstop1h 06m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

sáb. 11/15

7:08 pm-8:19 pm

Nonstop1h 11m

Chicago O'Hare Intl

dom. 11/23

4:50 pm-5:52 pm

Nonstop1h 02m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

jue. 9/11

6:55 pm-8:10 pm

Nonstop1h 15m

Chicago O'Hare Intl

jue. 9/18

4:50 pm-5:59 pm

Nonstop1h 09m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

vie. 8/29

9:42 am-10:57 am

Nonstop1h 15m

Chicago O'Hare Intl

mar. 9/2

7:50 am-8:56 am

Nonstop1h 06m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

mar. 9/9

9:42 am-10:57 am

Nonstop1h 15m

Chicago O'Hare Intl

mar. 9/16

7:50 am-8:56 am

Nonstop1h 06m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

vie. 8/29

6:55 pm-8:10 pm

Nonstop1h 15m

Chicago O'Hare Intl

lun. 9/1

4:50 pm-5:59 pm

Nonstop1h 09m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

jue. 9/18

9:42 am-10:57 am

Nonstop1h 15m

Chicago O'Hare Intl

dom. 9/21

4:50 pm-5:59 pm

Nonstop1h 09m

$159

DecaturChicago

DEC - ORD

DECORD

Decatur Arpt

vie. 9/12

9:42 am-10:57 am

Nonstop1h 15m

Chicago O'Hare Intl

vie. 9/19

7:50 am-8:56 am

Nonstop1h 06m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 17 results
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Best time to book a flight from Decatur to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Decatur with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Decatur to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Decatur, Illinois to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Decatur, Illinois to Chicago O'Hare Intl Airport (average of $245). Flying from Decatur, Illinois to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEC to ORD?

Find hourly flight availability from Decatur to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

When flying from Decatur, Illinois to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 24% versus a flight in the afternoon.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated agosto 14, 2025.
Peruse reviews from past customers who have flown with United Airlines from Decatur to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Crew

8.1

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Decatur to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Decatur to Chicago O'Hare Intl?

    Most people fly from Decatur Arpt (DEC) if they book a flight from Decatur to Chicago O'Hare Intl. On average, Decatur Arpt has 1 outbound flight to Chicago O'Hare Intl per day from 1 airline. Decatur Arpt is conveniently located just 4.7 mi from Decatur’s city center.

  • What is the cheapest airline to fly from Decatur, Illinois to Chicago O'Hare Intl Airport round-trip?

    Cheapflights users have booked flights from Decatur, Illinois to Chicago O'Hare Intl Airport round-trip from $148. United Airlines is 27% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from Decatur, Illinois to Chicago O'Hare Intl Airport?

    On average you can expect to pay $421 for a flight from Decatur, Illinois to Chicago O'Hare Intl Airport. The cheapest flight overall is $97 while the most popular route, (Decatur Arpt - Chicago O'Hare Intl) is currently priced at $149.

  • Can I find deals for flights from Decatur to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Decatur to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Decatur to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Decatur to O'Hare Intl.

  • Can I find deals for business class flights from Decatur to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Decatur to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Decatur, Illinois to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Decatur, Illinois to Chicago O'Hare Intl Airport (average of $245). Flying from Decatur, Illinois to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Beloit
Hoffman Estates
Skokie
Des Plaines
Elgin
Gurnee
Arlington Heights
Racine
Rockford
Great Lakes
Orland Park
Merrillville
Naperville
Waukegan
Elk Grove Village
Downers Grove
Tinley Park
Evanston

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Top airline flying from Decatur to O'Hare Intl

Discover the top airline that operate flights from Decatur to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$148Average$158FlexibilityNo cancel feeOn-time69%

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