HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Decatur

$93+ Cheap flights from Chicago (CHI) to Decatur, IL (DEC)

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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEC
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Decatur with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Chicago to Decatur

Cheapest flights from Chicago to Decatur
Explore the most affordable flight options available from Chicago to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sat 8/84:45 pm
ORD
-
DEC
Nonstop1h 11m
United Airlines
Wed 8/127:20 pm
DEC
-
ORD
Nonstop1h 17m
United Airlines
Deal found 7/24$149
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/264:45 pm
ORD
-
DEC
Nonstop1h 14m
United Airlines
Sun 8/308:03 pm
DEC
-
ORD
Nonstop1h 17m
United Airlines
Deal found 7/24$159
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Mon 11/24:50 pm
ORD
-
DEC
Nonstop1h 01m
United Airlines
Wed 11/49:42 am
DEC
-
ORD
Nonstop1h 05m
United Airlines
Deal found 7/21$191
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 7/254:45 pm
ORD
-
DEC
Nonstop1h 11m
United Airlines
Mon 7/279:37 am
DEC
-
ORD
Nonstop1h 08m
United Airlines
Deal found 7/21$199
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Sun 8/27:45 am
ORD
-
DEC
Nonstop1h 12m
United Airlines
Thu 8/69:37 am
DEC
-
ORD
Nonstop1h 08m
United Airlines
Deal found 7/20$241
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 7/247:45 am
ORD
-
DEC
Nonstop1h 12m
United Airlines
Fri 7/246:45 pm
DEC
-
ORD
Nonstop1h 08m
United Airlines
Deal found 7/22$391

Find flight deals from Chicago to Decatur

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Decatur (DEC). 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 July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$149
(United Airlines)

One-way from

$93
(United Airlines)
Provider with most accurate pricing for Chicago (CHI)-Decatur Arpt flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Decatur Arpt flights.
Search Deals
From Chicago (CHI) to Decatur Arpt
Search Deals
One-way flight from Chicago (CHI) to Decatur Arpt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Decatur 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 July 25, 2026.
Use the filters below to find and compare flights from Chicago to Decatur that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Thu 8/13

6:27 am-7:37 am

Nonstop1h 10m

Decatur Arpt

Sun 8/16

8:03 pm-9:20 pm

Nonstop1h 17m

$149

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Fri 10/16

7:25 am-8:35 am

Nonstop1h 10m

Decatur Arpt

Sun 10/18

7:18 pm-8:35 pm

Nonstop1h 17m

$149

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sat 9/5

4:45 pm-5:59 pm

Nonstop1h 14m

Decatur Arpt

Sun 9/6

8:03 pm-9:20 pm

Nonstop1h 17m

$159

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Wed 8/26

5:59 am-7:09 am

Nonstop1h 10m

Decatur Arpt

Sun 8/30

9:12 am-10:29 am

Nonstop1h 17m

$159

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Tue 8/18

4:45 pm-5:59 pm

Nonstop1h 14m

Decatur Arpt

Tue 8/25

7:20 pm-8:37 pm

Nonstop1h 17m

$159

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Wed 8/5

7:45 am-8:57 am

Nonstop1h 12m

Decatur Arpt

Sun 8/9

6:45 pm-7:53 pm

Nonstop1h 08m

$159

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sun 8/30

5:59 am-7:09 am

Nonstop1h 10m

Decatur Arpt

Fri 9/4

7:20 pm-8:37 pm

Nonstop1h 17m

$191
Quickest round-trip

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Wed 8/5

4:45 pm-5:56 pm

Nonstop1h 11m

Decatur Arpt

Sat 8/8

6:45 pm-7:53 pm

Nonstop1h 08m

$191

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Tue 8/4

4:45 pm-5:56 pm

Nonstop1h 11m

Decatur Arpt

Fri 8/7

9:37 am-10:45 am

Nonstop1h 08m

$191

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Mon 8/10

7:45 am-8:57 am

Nonstop1h 12m

Decatur Arpt

Mon 8/10

6:45 pm-7:53 pm

Nonstop1h 08m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 13 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Chicago-Decatur, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Decatur, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Decatur, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Decatur, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Decatur, Illinois flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Chicago 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 Chicago to Decatur

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

Find hourly flight availability from Chicago to Decatur. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 25, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to Decatur, Illinois as you normally would.

Weekly flight availability from Chicago to Decatur, Illinois

Explore weekly flight availability from Chicago to Decatur. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 25, 2026.

The most flights from CHI to DEC are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Related info for your journey

Find useful and relevant information for your journey from Chicago to Decatur. 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 into for flights to Decatur from Chicago?

    Most people fly into Decatur Arpt (DEC) if they book a flight to Decatur from Chicago. On average, Decatur Arpt has 1 inbound flight from Chicago per day from 0 airlines. Decatur Arpt is conveniently located just 4.7 mi from Decatur’s city center.

  • How long is the flight from Chicago to Decatur, Illinois?

    Departing from Chicago to Decatur, Illinois will take you 1h 10m. The distance between Chicago and Decatur, Illinois is about 156 mi. Generally, flights for this route are nonstop.

  • Can I find deals for flights from Chicago to Decatur that include hotel bookings?

    Yes. In addition to deals on Chicago to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Decatur?

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

  • Can I find deals for business class flights from Chicago to Decatur?

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

See more FAQs

Traveling to a place near Decatur?

Book flights to Decatur if you plan to visit one of these locations
Mattoon
Effingham

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights