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Decatur

$356+ Cheap flights from Colorado to Decatur, IL (DEC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/22. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DEC
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap flight deals from Colorado to Decatur

Keep the following information in mind while searching for Colorado to Decatur flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$356
(United Airlines)
Provider with most accurate pricing for Denver Intl-Decatur Arpt flight deals.
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Provider most trusted by Cheapflights users for Denver Intl-Decatur Arpt flights.
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From Colorado to Decatur Arpt
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Find flight deals from Colorado to Decatur

Cheapest flights from Colorado to Decatur
Explore the most affordable flight options available from Colorado to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/16. 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.
Mon 12/227:26 pmDEN - DEC
1 stop12h 39mUnited Airlines
Sun 12/287:09 pmDEC - DEN
1 stop5h 29mUnited Airlines
Deal found 10/16$356
This United Airlines deal was found by Cheapflights users on 10/16. 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.
Fri 12/266:00 amDEN - DEC
1 stop26h 05mUnited Airlines
Wed 12/319:44 amDEC - DEN
1 stop24h 21mUnited Airlines
Deal found 10/16$463
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/309:35 amDEN - DEC
1 stop7h 17mUnited Airlines
Mon 11/37:08 pmDEC - DEN
1 stop27h 41mUnited Airlines
Deal found 10/15$466
This United Airlines deal was found by Cheapflights users on 10/15. 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 12/95:35 pmDEN - DEC
1 stop14h 13mUnited Airlines
Sat 12/137:08 pmDEC - DEN
1 stop25h 56mUnited Airlines
Deal found 10/15$479
This United Airlines deal was found by Cheapflights users on 10/16. 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.
Fri 10/1711:15 amDEN - DEC
1 stop5h 49mUnited Airlines
Sun 10/196:55 pmDEC - DEN
2 stops16h 31mUnited Airlines
Deal found 10/16$583
This United Airlines deal was found by Cheapflights users on 10/15. 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 11/265:25 pmDEN - DEC
1 stop14h 23mUnited Airlines
Sun 11/309:44 amDEC - DEN
2 stops14h 13mUnited Airlines
Deal found 10/15$609

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado 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 October 16, 2025.
Use the filters below to find and compare flights from Colorado to Decatur that are best for you.

Fly from

Colorado

Fly to

Decatur

Route

Depart

Return

Price

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Mon 12/22

7:26 pm-9:05 am

1 stop12h 39m

Decatur Arpt

Sun 12/28

7:09 pm-11:38 pm

1 stop5h 29m

$356

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Wed 10/29

11:15 am-5:52 pm

1 stop5h 37m

Decatur Arpt

Sun 11/2

9:44 am-7:05 am

2 stops22h 21m

$447

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Fri 12/26

6:00 am-9:05 am

1 stop26h 05m

Decatur Arpt

Wed 12/31

9:44 am-9:05 am

1 stop24h 21m

$463

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Tue 12/9

5:35 pm-8:48 am

1 stop14h 13m

Decatur Arpt

Sat 12/13

7:08 pm-8:04 pm

1 stop25h 56m

$479

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Thu 10/30

5:58 pm-5:52 pm

2 stops22h 54m

Decatur Arpt

Mon 11/3

7:08 pm-5:45 pm

1 stop23h 37m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Best time to book a flight from Colorado to Decatur

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

What is the cheapest month to book a flight from Colorado to Decatur, Illinois?

Currently, July is the cheapest month in which you can book a flight from Colorado to Decatur, Illinois (average of $46). Flying from Colorado to Decatur, Illinois in March is currently the most expensive (average of $133). 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.

Related info for your journey

Find useful and relevant information for your journey from Colorado 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 Colorado?

    If you book a flight to Decatur from Colorado, you will be flying to Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.

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

    United Airlines can get you from Colorado to Decatur, Illinois in just under 12h 39m. Your travel time can differ by up to . The distance from Colorado to Decatur, Illinois is about 837 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado 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.

  • What is the cheapest month to book a flight from Colorado to Decatur, Illinois?

    Currently, July is the cheapest month in which you can book a flight from Colorado to Decatur, Illinois (average of $46). Flying from Colorado to Decatur, Illinois in March is currently the most expensive (average of $133). 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 Decatur?

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

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Top airline flying from Colorado to Decatur

Discover the top airline that operate flights from Colorado 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$418Average$1,240FlexibilityNo cancel feeOn-time69%

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