HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Colorado

$256+ Cheap flights from Decatur, IL (DEC) to Colorado

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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — DEN
Sep 7 — Sep 141
Mon 9/7
Mon 9/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Decatur to Colorado with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 8, 2026.

This United Airlines deal was found by Cheapflights users on 8/7. 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 11/146:57 pm -
1 stop5h 34m
Tue 11/179:52 am -
1 stop7h 18m
Deal found 8/7$394
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Fri 9/47:20 pm -
1 stop5h 33m
Sun 9/66:18 pm -
1 stop22h 41m
Deal found 8/4$417
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/217:20 pm -
1 stop5h 33m
Wed 8/2611:15 am -
1 stop5h 44m
Deal found 8/7$424
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/287:18 pm -
1 stop5h 36m
Mon 10/58:29 pm -
1 stop21h 14m
Deal found 8/3$429
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/217:20 pm -
1 stop5h 33m
Sat 8/297:45 am -
1 stop22h 24m
Deal found 8/7$444
This United Airlines deal was found by Cheapflights users on 8/7. 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 10/17:18 pm -
1 stop5h 36m
Sun 10/46:00 am -
1 stop11h 43m
Deal found 8/7$448
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/197:20 pm -
1 stop5h 33m
Wed 8/2611:15 am -
1 stop5h 44m
Deal found 8/7$454
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/147:20 pm -
1 stop5h 08m
Fri 9/187:10 pm -
1 stop22h 34m
Deal found 8/7$455
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/238:03 pm -
1 stop4h 50m
Fri 8/283:50 pm -
1 stop25h 09m
Deal found 8/7$470
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/197:20 pm -
1 stop5h 33m
Sat 8/296:00 am -
1 stop10h 59m
Deal found 8/7$474
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/197:20 pm -
1 stop5h 33m
Fri 8/286:18 pm -
1 stop22h 41m
Deal found 8/7$484
This United Airlines deal was found by Cheapflights users on 8/7. 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 8/217:20 pm -
1 stop5h 33m
Sun 8/308:35 am -
1 stop8h 24m
Deal found 8/7$493

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 August 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$394
(United Airlines)

One-way from

$256
(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
One-way flight 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 August 8, 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
Quickest round-trip

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Sat 11/14

6:57 pm-11:31 pm

1 stop5h 34m

Denver Intl

Tue 11/17

9:52 am-6:10 pm

1 stop7h 18m

$394

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Tue 1/12

6:55 pm-11:58 pm

1 stop6h 03m

Denver Intl

Sat 1/16

5:42 pm-8:46 am

1 stop14h 04m

$429

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Mon 9/28

7:18 pm-11:54 pm

1 stop5h 36m

Denver Intl

Sat 10/3

5:36 pm-6:43 pm

1 stop24h 07m

$429

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Sat 8/22

7:20 pm-11:54 pm

1 stop5h 34m

Denver Intl

Sat 8/29

7:10 pm-7:09 am

1 stop10h 59m

$444

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Fri 8/21

7:20 pm-11:53 pm

1 stop5h 33m

Denver Intl

Sat 8/29

7:45 am-7:09 am

1 stop22h 24m

$444

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Sat 10/3

7:18 pm-11:54 pm

1 stop5h 36m

Denver Intl

Sun 10/4

6:00 am-8:35 am

1 stop25h 35m

$448

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Fri 10/2

7:18 pm-11:54 pm

1 stop5h 36m

Denver Intl

Sun 10/4

6:00 am-6:43 pm

1 stop11h 43m

$448

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Thu 8/20

7:20 pm-11:53 pm

1 stop5h 33m

Denver Intl

Fri 8/28

7:45 am-5:59 pm

1 stop9h 14m

$484

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Sun 10/4

7:18 pm-6:39 am

1 stop12h 21m

Denver Intl

Tue 10/6

8:29 pm-8:35 am

1 stop11h 06m

$496

DecaturDenver

DEC Decatur Arpt - DEN Denver Intl

DECDEN

Decatur Arpt

Sun 10/4

7:18 pm-7:39 am

1 stop13h 21m

Denver Intl

Wed 10/7

7:45 am-6:43 pm

1 stop9h 58m

$496

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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 34m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Decatur to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Newark flights
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to Seattle flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Orlando flights
O'Hare Intl to Dallas/Fort Worth flights
O'Hare Intl to Denver flights
O'Hare Intl to Miami flights
O'Hare Intl to Fort Lauderdale flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Sky Harbor Intl flights
O'Hare Intl to Boston flights
O'Hare Intl to San Francisco flights
O'Hare Intl to Tampa flights
O'Hare Intl to Atlanta flights
Midway to Las Vegas flights
O'Hare Intl to New Orleans flights
O'Hare Intl to Dulles Intl flights
Midway to Newark flights
Midway to Atlanta flights
Midway to Dallas/Fort Worth flights
O'Hare Intl to Hobby flights
O'Hare Intl to San Diego flights
O'Hare Intl to Fort Myers flights
O'Hare Intl to Nashville flights
O'Hare Intl to Reagan-National flights
O'Hare Intl to Baltimore flights
O'Hare Intl to George Bush Intcntl flights
O'Hare Intl to Ontario flights
Midway to Denver flights
O'Hare Intl to Philadelphia flights
Midway to LaGuardia flights
O'Hare Intl to Charlotte flights
O'Hare Intl to Austin flights
St. Louis to Las Vegas flights
O'Hare Intl to Minneapolis flights
Midway to John F Kennedy Intl flights
Midway to Los Angeles flights
O'Hare Intl to Honolulu flights
Midway to Hobby flights
St. Louis to Denver flights
O'Hare Intl to Portland flights
Midway to Miami flights
O'Hare Intl to Salt Lake City flights
Midway to Tampa flights
Midway to New Orleans flights
Midway to Minneapolis flights
Midway to Fort Lauderdale flights
O'Hare Intl to Santa Ana flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights