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$438+ Cheap flights from Decatur, IL (DEC) to Colorado

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — DEN
Jun 3 — Jun 101
Wed 6/3
Wed 6/10
1 adult, Economy
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Cheap flight deals from Decatur to Colorado

Cheapest flights from Decatur to Colorado
Explore the most affordable flight options available from Decatur to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 4, 2026.

This United Airlines deal was found by Cheapflights users on 4/30. 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 7/77:20 pm
DEC
-
DEN
1 stop5h 29m
United Airlines
Sun 7/129:05 pm
DEN
-
DEC
1 stop19h 51m
United Airlines
Deal found 4/30$438
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/26:55 pm
DEC
-
DEN
1 stop5h 39m
United Airlines
Sat 9/56:00 am
DEN
-
DEC
1 stop25h 46m
United Airlines
Deal found 4/30$448
This United Airlines deal was found by Cheapflights users on 5/2. 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 6/16:45 pm
DEC
-
DEN
1 stop6h 07m
United Airlines
Sun 6/78:35 pm
DEN
-
DEC
2 stops20h 21m
United Airlines
Deal found 5/2$466
This United Airlines deal was found by Cheapflights users on 5/4. 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 5/197:25 pm
DEC
-
DEN
1 stop5h 25m
United Airlines
Sat 5/236:00 pm
DEN
-
DEC
1 stop13h 57m
United Airlines
Deal found 5/4$499
This United Airlines deal was found by Cheapflights users on 4/29. 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 7/199:37 am
DEC
-
DEN
2 stops9h 13m
United Airlines
Sat 7/259:45 am
DEN
-
DEC
2 stops7h 28m
United Airlines
Deal found 4/29$1,089

Find flight deals from Decatur to Colorado

Keep the following information in mind while searching for Decatur to Colorado flight deals. Data was last updated May 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$438
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Decatur Arpt-Denver Intl flights.
Search Deals
From Decatur Arpt to Colorado
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to Colorado 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 May 4, 2026.
Use the filters below to find and compare flights from Decatur to Colorado that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Wed 9/2

6:55 pm-11:34 pm

1 stop5h 39m

Denver Intl

Sat 9/5

7:05 pm-5:51 pm

1 stop21h 46m

$438

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Sun 7/19

7:20 pm-12:58 am

1 stop6h 38m

Denver Intl

Sat 7/25

6:00 pm-5:56 pm

1 stop22h 56m

$438

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Tue 7/7

7:20 pm-11:49 pm

1 stop5h 29m

Denver Intl

Sun 7/12

9:05 pm-5:56 pm

1 stop19h 51m

$438
Quickest round-trip

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Mon 6/1

6:45 pm-11:52 pm

1 stop6h 07m

Denver Intl

Sun 6/7

9:05 pm-8:57 am

1 stop10h 52m

$448

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Tue 5/19

7:25 pm-11:50 pm

1 stop5h 25m

Denver Intl

Sat 5/23

6:00 pm-8:57 am

1 stop13h 57m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Sorted by cheapest first

Best time to book a flight from Decatur to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Decatur 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 Decatur to Colorado
No data available for this route at this time. Please check back soon.

Related info for your journey

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

    Decatur Arpt (DEC), located 4.7 mi from the city center, is the airport you fly out of when you book flights from Decatur to Colorado.

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

    There are many flights that can get you from Decatur, Illinois to Colorado in 5h 39m. Fly via United Airlines to get the fastest option. There are 837 mi between Decatur, Illinois and Colorado.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Decatur to Colorado 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

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