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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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — DEC
Jul 23 — Jul 301
Wed 7/23
Wed 7/30
1 adult, Economy
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Cheap 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 18, 2025.

Round-trip from

$149
(United Airlines)

One-way from

$93
(United Airlines)
From Chicago (CHI) to Decatur Arpt
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One-way flight from Chicago (CHI) to Decatur Arpt
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Find 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 18, 2025.

This United Airlines deal was found by Cheapflights users on 7/16. 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 7/317:45 amORD - DEC
Nonstop1h 03mUnited Airlines
Mon 8/49:45 amDEC - ORD
Nonstop1h 10mUnited Airlines
Deal found 7/16$149

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 18, 2025.
Use the filters below to find and compare flights from Chicago to Decatur that are best for you.

Fly from

Chicago

Fly to

Decatur

Route

Depart

Return

Price

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Thu 7/31

7:45 am-8:48 am

Nonstop1h 03m

Decatur Arpt

Mon 8/4

9:45 am-10:55 am

Nonstop1h 10m

$149

ChicagoDecatur

ORD - DEC

ORDDEC

Chicago O'Hare Intl

Sun 8/3

5:00 pm-6:03 pm

Nonstop1h 03m

$93

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

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 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to Decatur, Illinois in the morning. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight at noon.

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 18, 2025.

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).

Reviews of airlines servicing Decatur

Get insights into the airlines that provide service to Decatur. 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 Decatur. Reviews last updated July 18, 2025.
Get a feel of what it's like to fly with United Airlines from Chicago to Decatur by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,864 reviews

Crew

8.1

Entertainment

7.0

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

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
8,864 reviews
United Airlines
7.4
Good
8,864 reviews

Crew

8.1

Entertainment

7.0

Food

6.6

Boarding

7.7

Comfort

7.3

Overall

7.4

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 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 1 airline. Decatur Arpt is conveniently located just 4.7 mi from Decatur’s city center.

  • 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

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Top airline flying from Chicago to Decatur

Discover the top airline that operate flights from Chicago to Decatur. 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 July 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$132Average$158FlexibilityNo cancel feeOn-time69%

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