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$408+ 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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — DEN
Jul 22 — Jul 291
Wed 7/22
Wed 7/29
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 June 22, 2026.

This United Airlines deal was found by Cheapflights users on 6/17. 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 11/146:55 pm
DEC
-
DEN
1 stop5h 08m
United Airlines
Wed 11/187:32 am
DEN
-
DEC
1 stop24h 14m
United Airlines
Deal found 6/17$408
This United Airlines deal was found by Cheapflights users on 6/19. 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 7/176:45 pm
DEC
-
DEN
1 stop6h 03m
United Airlines
Fri 7/247:10 pm
DEN
-
DEC
1 stop21h 46m
United Airlines
Deal found 6/19$438
This United Airlines deal was found by Cheapflights users on 6/21. 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 11/176:55 pm
DEC
-
DEN
1 stop16h 31m
United Airlines
Wed 11/187:05 pm
DEN
-
DEC
1 stop21h 46m
United Airlines
Deal found 6/21$464
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/106:45 pm
DEC
-
DEN
1 stop13h 54m
United Airlines
Thu 8/136:00 am
DEN
-
DEC
1 stop10h 59m
United Airlines
Deal found 6/19$486
This United Airlines deal was found by Cheapflights users on 6/19. 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 8/106:45 pm
DEC
-
DEN
1 stop12h 54m
United Airlines
Fri 8/146:00 am
DEN
-
DEC
1 stop10h 59m
United Airlines
Deal found 6/19$505
This United Airlines deal was found by Cheapflights users on 6/21. 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 8/277:20 pm
DEC
-
DEN
1 stop5h 33m
United Airlines
Sun 8/308:46 pm
DEN
-
DEC
2 stops20h 13m
United Airlines
Deal found 6/21$539
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 7/26:45 pm
DEC
-
DEN
1 stop6h 03m
United Airlines
Sat 7/116:00 pm
DEN
-
DEC
1 stop13h 57m
United Airlines
Deal found 6/22$554
This United Airlines deal was found by Cheapflights users on 6/22. 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 7/76:45 pm
DEC
-
DEN
1 stop15h 10m
United Airlines
Sat 7/113:01 pm
DEN
-
DEC
1 stop16h 56m
United Airlines
Deal found 6/22$634

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 June 22, 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 June 22, 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

Sat 11/14

6:55 pm-11:03 pm

1 stop5h 08m

Denver Intl

Wed 11/18

7:32 am-8:46 am

1 stop24h 14m

$408

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Fri 7/17

6:45 pm-11:48 pm

1 stop6h 03m

Denver Intl

Fri 7/24

7:10 pm-5:56 pm

1 stop21h 46m

$438

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Tue 7/21

6:45 pm-11:48 pm

1 stop6h 03m

Denver Intl

Mon 7/27

7:10 pm-5:56 pm

1 stop21h 46m

$438

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Tue 11/17

6:55 pm-10:26 am

1 stop16h 31m

Denver Intl

Wed 11/18

7:05 pm-5:51 pm

1 stop21h 46m

$464

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Mon 8/10

6:45 pm-7:39 am

1 stop13h 54m

Denver Intl

Thu 8/13

6:00 am-5:59 pm

1 stop10h 59m

$486

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Thu 8/27

7:20 pm-11:53 pm

1 stop5h 33m

Denver Intl

Sun 8/30

8:46 pm-5:59 pm

2 stops20h 13m

$539
Quickest round-trip

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

Thu 7/2

6:45 pm-11:48 pm

1 stop6h 03m

Denver Intl

Sat 7/11

6:00 pm-8:57 am

1 stop13h 57m

$554

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

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 08m. 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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