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Decatur

$266+ Cheap flights from Colorado 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DEC
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Cheap 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 April 10, 2026.

This United Airlines deal was found by Cheapflights users on 4/5. 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 5/96:00 am
DEN
-
DEC
1 stop5h 54m
United Airlines
Wed 5/139:42 am
DEC
-
DEN
1 stop7h 34m
United Airlines
Deal found 4/5$404
This United Airlines deal was found by Cheapflights users on 4/9. 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 8/297:45 am
DEN
-
DEC
1 stop24h 01m
United Airlines
Tue 9/16:55 pm
DEC
-
DEN
1 stop5h 39m
United Airlines
Deal found 4/9$448
This United Airlines deal was found by Cheapflights users on 4/9. 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 5/87:20 pm
DEN
-
DEC
1 stop16h 34m
United Airlines
Sun 5/107:25 pm
DEC
-
DEN
1 stop5h 25m
United Airlines
Deal found 4/9$474
This United Airlines deal was found by Cheapflights users on 4/9. 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 4/285:44 pm
DEN
-
DEC
1 stop23h 13m
United Airlines
Mon 5/47:25 pm
DEC
-
DEN
1 stop5h 25m
United Airlines
Deal found 4/9$484
This United Airlines deal was found by Cheapflights users on 4/8. 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 4/237:45 am
DEN
-
DEC
1 stop24h 13m
United Airlines
Mon 4/277:37 pm
DEC
-
DEN
1 stop6h 21m
United Airlines
Deal found 4/8$519
This United Airlines deal was found by Cheapflights users on 4/10. 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 8/212:45 pm
DEN
-
DEC
1 stop26h 06m
United Airlines
Sun 8/236:55 pm
DEC
-
DEN
1 stop13h 44m
United Airlines
Deal found 4/10$556

Find flight deals from Colorado to Decatur

Keep the following information in mind while searching for Colorado to Decatur flight deals. Data was last updated April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$404
(United Airlines)

One-way from

$266
(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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One-way flight from Colorado to Decatur Arpt
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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 April 10, 2026.
Use the filters below to find and compare flights from Colorado to Decatur that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Sat 5/9

6:00 am-12:54 pm

1 stop5h 54m

Decatur Arpt

Wed 5/13

9:42 am-4:16 pm

1 stop7h 34m

$404

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Sat 8/29

5:30 pm-8:46 am

1 stop14h 16m

Decatur Arpt

Tue 9/1

6:55 pm-11:34 pm

1 stop5h 39m

$448

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Thu 4/23

7:45 am-8:58 am

1 stop24h 13m

Decatur Arpt

Mon 4/27

7:37 pm-12:58 am

1 stop6h 21m

$519

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Fri 5/8

8:50 pm-8:58 am

2 stops35h 08m

Decatur Arpt

Sun 5/10

7:25 pm-11:50 pm

1 stop5h 25m

$529
Cheapest one-way
Quickest one-way

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Sat 7/18

4:20 pm-8:57 am

1 stop15h 37m

$266

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Fri 5/1

7:20 pm-12:54 pm

1 stop16h 34m

$282

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Fri 6/5

7:40 pm-5:56 pm

1 stop21h 16m

$306

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/7

Sorted by cheapest first

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 $261). 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 5h 54m. 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 $261). 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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