HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$366+ Cheap flights from Decatur, IL to Denver (DEC - DEN)

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — DEN
févr. 11 — févr. 181
mer. 2/11
mer. 2/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Decatur to Denver 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 Denver

Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated janvier 12, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$372
(United Airlines)

One-way from

$366
(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 Denver Intl
Search Deals
One-way flight from Decatur Arpt to Denver Intl
Search Deals

Find flight deals from Decatur to Denver

Cheapest flights from Decatur to Denver
Explore the most affordable flight options available from Decatur to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 12, 2026.

This United Airlines deal was found by Cheapflights users on 1/11. 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.
sam. 4/117:20 pm
DEC
-
DEN
1 stop5h 24m
United Airlines
mer. 4/156:00 am
DEN
-
DEC
1 stop25h 58m
United Airlines
Deal found 1/11$372
This United Airlines deal was found by Cheapflights users on 1/12. 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.
ven. 2/137:15 pm
DEC
-
DEN
1 stop14h 48m
United Airlines
dim. 2/158:30 pm
DEN
-
DEC
1 stop11h 22m
United Airlines
Deal found 1/12$406
This United Airlines deal was found by Cheapflights users on 1/12. 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.
lun. 4/137:20 pm
DEC
-
DEN
1 stop5h 24m
United Airlines
lun. 4/205:44 pm
DEN
-
DEC
2 stops23h 18m
United Airlines
Deal found 1/12$429
This United Airlines deal was found by Cheapflights users on 1/11. 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.
ven. 2/69:49 am
DEC
-
DEN
1 stop7h 03m
United Airlines
dim. 2/86:00 am
DEN
-
DEC
1 stop11h 01m
United Airlines
Deal found 1/11$430
This United Airlines deal was found by Cheapflights users on 1/12. 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.
mar. 1/277:09 pm
DEC
-
DEN
1 stop20h 42m
United Airlines
sam. 1/3111:20 am
DEN
-
DEC
1 stop5h 41m
United Airlines
Deal found 1/12$432
This United Airlines deal was found by Cheapflights users on 1/12. 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.
ven. 1/309:49 am
DEC
-
DEN
1 stop25h 46m
United Airlines
dim. 2/16:00 am
DEN
-
DEC
1 stop11h 01m
United Airlines
Deal found 1/12$501
This United Airlines deal was found by Cheapflights users on 1/11. 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.
jeu. 2/129:50 am
DEC
-
DEN
2 stops25h 10m
United Airlines
dim. 2/157:45 am
DEN
-
DEC
1 stop9h 09m
United Airlines
Deal found 1/11$516
This United Airlines deal was found by Cheapflights users on 1/12. 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.
mer. 2/47:09 pm
DEC
-
DEN
1 stop18h 29m
United Airlines
lun. 2/98:25 pm
DEN
-
DEC
1 stop20h 36m
United Airlines
Deal found 1/12$518

Cheapflights Fare Finder

 
Customize your flight search to find flights from Decatur to Denver 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 janvier 12, 2026.
Use the filters below to find and compare flights from Decatur to Denver that are best for you.

Fly from

Decatur

Fly to

Denver

Route

Depart

Return

Price

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

sam. 4/11

7:20 pm-11:44 pm

1 stop5h 24m

Denver Intl

mer. 4/15

4:15 pm-6:02 pm

1 stop24h 47m

$372

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

ven. 2/6

9:49 am-3:52 pm

1 stop7h 03m

Denver Intl

dim. 2/8

6:00 am-6:01 pm

1 stop11h 01m

$430

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

ven. 2/13

9:50 am-9:03 am

1 stop24h 13m

Denver Intl

dim. 2/15

5:34 pm-5:54 pm

2 stops23h 20m

$478

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

ven. 1/30

9:49 am-10:35 am

1 stop25h 46m

Denver Intl

dim. 2/1

6:00 am-6:01 pm

1 stop11h 01m

$501

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

jeu. 2/12

9:50 am-10:00 am

2 stops25h 10m

Denver Intl

dim. 2/15

7:45 am-5:54 pm

1 stop9h 09m

$516

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

mer. 2/4

7:09 pm-12:38 pm

1 stop18h 29m

Denver Intl

lun. 2/9

8:25 pm-6:01 pm

1 stop20h 36m

$518

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

ven. 1/23

9:49 am-8:49 am

1 stop24h 00m

$366

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

ven. 1/16

9:49 am-2:51 pm

1 stop6h 02m

$545

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Compare providers for flights from Decatur to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Decatur to Denver in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Decatur, Illinois-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Decatur, Illinois-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Decatur, Illinois-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Decatur, Illinois-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Decatur, Illinois-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Decatur to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver 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 Denver

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

Currently, September is the cheapest month in which you can book a flight from Decatur, Illinois to Denver (average of $49). Flying from Decatur, Illinois to Denver in March is currently the most expensive (average of $166). 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 Decatur to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    A quick flight from Decatur, Illinois to Denver can take about 5h 24m. United Airlines provides one of the quickest options available for as low as $372. There are 837 mi between Decatur, Illinois and Denver.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Decatur to Denver 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 Decatur, Illinois to Denver?

    Currently, September is the cheapest month in which you can book a flight from Decatur, Illinois to Denver (average of $49). Flying from Decatur, Illinois to Denver in March is currently the most expensive (average of $166). 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 Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Broomfield
Westminster
Lakewood
Golden
Greeley
Lone Tree
Wheat Ridge
Cripple Creek
Winter Park
Silverthorne
Central City
Frisco
Manitou Springs
Fort Morgan
Brighton
Longmont
Evergreen
Idaho Springs

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 Denver

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Denver flights
Midway to Denver flights
St. Louis to Denver flights
O'Hare Intl to Vail flights
O'Hare Intl to Aspen flights
O'Hare Intl to Colorado Springs flights
O'Hare Intl to Hayden flights
Peoria to Denver flights
Moline to Denver flights
O'Hare Intl to Montrose flights
Midway to Colorado Springs flights
Bloomington to Denver flights
Midway to Aspen flights
O'Hare Intl to Durango flights
O'Hare Intl to Grand Junction flights
O'Hare Intl to Gunnison flights
St. Louis to Colorado Springs flights
Midway to Grand Junction flights
St. Louis to Montrose flights
Springfield to Denver flights
St. Louis to Grand Junction flights
St. Louis to Durango flights
Evansville to Denver flights
Peoria to Colorado Springs flights
St. Louis to Aspen flights
Moline to Colorado Springs flights
St. Louis to Hayden flights
Peoria to Grand Junction flights
St. Louis to Vail flights
St. Louis to Gunnison flights
Peoria to Montrose flights
Moline to Grand Junction flights
Champaign to Denver flights
Bloomington to Colorado Springs flights
Moline to Vail flights
Moline to Montrose flights
Paducah to Denver flights
Evansville to Vail flights
Springfield to Colorado Springs flights
Champaign to Colorado Springs flights
Paducah to Colorado Springs flights
Dubuque to Denver flights
Evansville to Grand Junction flights
St. Louis to Cortez flights
Bloomington to Montrose 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.