$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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEC
Sep 26 — Oct 31
Round-trip
1 adult, Economy
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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
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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
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Last-minute
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Cheapest flights from Chicago to DecaturExplore 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 August 27, 2026.
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 August 27, 2026.
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Fri 9/185:30 pm -
Nonstop1h 14m
Mon 9/217:20 pm -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Fri 10/307:25 am -
Nonstop1h 10m
Mon 11/26:57 pm -
Nonstop1h 28m
Deal found 8/24![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Thu 9/105:30 pm -
Nonstop1h 14m
Sun 9/137:20 pm -
Nonstop1h 17m
Deal found 8/27![United Airlines logo]()
$160
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/44:45 pm -
Nonstop1h 14m
Sun 9/69:12 am -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Sun 9/65:59 am -
Nonstop1h 10m
Thu 9/109:12 am -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Sat 8/224:45 pm -
Nonstop1h 14m
Mon 8/247:20 pm -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$199
This United Airlines deal was found by Cheapflights users on 8/24. 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 9/54:45 pm -
Nonstop1h 14m
Sun 9/69:12 am -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 8/26. 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 8/316:27 am -
Nonstop1h 10m
Fri 9/47:20 pm -
Nonstop1h 17m
Deal found 8/26![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Wed 8/265:59 am -
Nonstop1h 10m
Wed 8/269:12 am -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 8/22. 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.
Tue 8/254:45 pm -
Nonstop1h 14m
Thu 8/277:20 pm -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$391
Best flights from Chicago to DecaturDiscover carefully curated flight deals from Chicago to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 27, 2026.
Discover carefully curated flight deals from Chicago to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 27, 2026.
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Thu 10/157:25 am -
Nonstop1h 10m
Thu 10/229:12 am -
Nonstop1h 17m
Deal found 8/23![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Fri 9/185:30 pm -
Nonstop1h 14m
Mon 9/217:20 pm -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Thu 10/84:40 pm -
Nonstop1h 13m
Thu 10/157:18 pm -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 8/23. 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 9/205:30 pm -
Nonstop1h 14m
Sun 9/279:12 am -
Nonstop1h 17m
Deal found 8/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/26. 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 10/314:45 pm -
Nonstop1h 10m
Mon 11/29:10 am -
Nonstop1h 09m
Deal found 8/26![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/155:30 pm -
Nonstop1h 14m
Tue 9/227:20 pm -
Nonstop1h 17m
Deal found 8/25![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/23. 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 11/257:25 am -
Nonstop1h 10m
Thu 11/269:10 am -
Nonstop1h 09m
Deal found 8/23![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Thu 9/105:30 pm -
Nonstop1h 14m
Sun 9/137:20 pm -
Nonstop1h 17m
Deal found 8/27![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Tue 9/225:30 pm -
Nonstop1h 14m
Tue 9/297:18 pm -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/26. 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 9/115:30 pm -
Nonstop1h 14m
Tue 9/157:20 pm -
Nonstop1h 17m
Deal found 8/26![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/26. 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.
Thu 9/105:30 pm -
Nonstop1h 14m
Mon 9/147:20 pm -
Nonstop1h 17m
Deal found 8/26![United Airlines logo]()
$159
Last-minute flights from Chicago to DecaturDiscover last-minute flight deals from Chicago to Decatur. Data last updated August 27, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Decatur. Data last updated August 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Thu 8/276:27 am -
Nonstop1h 10m
Sat 8/297:20 pm -
Nonstop1h 17m
Deal found 8/25![United Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 8/26. 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 8/316:27 am -
Nonstop1h 10m
Thu 9/37:20 pm -
Nonstop1h 17m
Deal found 8/26![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/44:45 pm -
Nonstop1h 14m
Sun 9/69:12 am -
Nonstop1h 17m
Deal found 8/22![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 8/24. 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 9/54:45 pm -
Nonstop1h 14m
Sun 9/69:12 am -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$200
This United Airlines deal was found by Cheapflights users on 8/23. 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 9/76:27 am -
Nonstop1h 10m
Fri 9/119:12 am -
Nonstop1h 17m
Deal found 8/23![United Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Thu 9/105:30 pm -
Nonstop1h 14m
Sun 9/137:20 pm -
Nonstop1h 17m
Deal found 8/27![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 8/24. 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.
Fri 9/185:30 pm -
Nonstop1h 14m
Mon 9/217:20 pm -
Nonstop1h 17m
Deal found 8/24![United Airlines logo]()
$149
One-way flights from Chicago to DecaturSearch for one-way flight options from Chicago to Decatur. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
Search for one-way flight options from Chicago to Decatur. Find affordable one-way fares based on user searches. Data last updated August 27, 2026.
This United Airlines deal was found by Cheapflights users on 8/23. 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 9/145:29 pm -
Nonstop1h 14m
Deal found 8/23![United Airlines logo]()
$93
This United Airlines deal was found by Cheapflights users on 8/24. 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 12/264:50 pm -
Nonstop1h 01m
Deal found 8/24![United Airlines logo]()
$96
This United Airlines deal was found by Cheapflights users on 8/26. 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 9/44:45 pm -
Nonstop1h 14m
Deal found 8/26![United Airlines logo]()
$143
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 August 27, 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) |
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 7,457,451 searches. Data last updated August 27, 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
Cheapest round-trip
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Thu 10/15
7:25 am-8:35 am
Nonstop1h 10m
Decatur Arpt
Thu 10/22
9:12 am-10:29 am
Nonstop1h 17m
$149
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Fri 9/18
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Mon 9/21
7:20 pm-8:37 pm
Nonstop1h 17m
$149
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Thu 10/8
4:40 pm-5:53 pm
Nonstop1h 13m
Decatur Arpt
Thu 10/15
7:18 pm-8:35 pm
Nonstop1h 17m
$149
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Sun 9/20
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Sun 9/27
9:12 am-10:29 am
Nonstop1h 17m
$159
Quickest round-trip
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Sat 10/31
4:45 pm-5:55 pm
Nonstop1h 10m
Decatur Arpt
Mon 11/2
9:10 am-10:19 am
Nonstop1h 09m
$159
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Tue 9/15
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Tue 9/22
7:20 pm-8:37 pm
Nonstop1h 17m
$159
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Wed 11/25
7:25 am-8:35 am
Nonstop1h 10m
Decatur Arpt
Thu 11/26
9:10 am-10:19 am
Nonstop1h 09m
$159
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Thu 9/10
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Sun 9/13
7:20 pm-8:37 pm
Nonstop1h 17m
$159
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Tue 9/22
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Tue 9/29
7:18 pm-8:35 pm
Nonstop1h 17m
$159
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Fri 9/11
5:30 pm-6:44 pm
Nonstop1h 14m
Decatur Arpt
Tue 9/15
7:20 pm-8:37 pm
Nonstop1h 17m
$159
Showing 1-10 of 19 resultsSorted by cheapest first
- 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.
CHI-DEC
ORD-DEC
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
CHI-DEC
ORD-DEC
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 August 27, 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 August 27, 2026.
The most flights from CHI to DEC are scheduled on a Wednesday (2 on average). You will have fewer flight options on Monday, 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.
Traveling to a place near Decatur?
Book flights to Decatur if you plan to visit one of these locationsMattoon
Effingham
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