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Decatur

$256+ Cheap flights from Denver to Decatur, IL (DEN - 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — DEC
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Cheap flight deals from Denver to Decatur

Cheapest flights from Denver to Decatur
Explore the most affordable flight options available from Denver to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.

This United Airlines deal was found by Cheapflights users on 3/29. 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.
Mon 6/86:00 pm
DEN
-
DEC
1 stop22h 56m
United Airlines
Tue 6/167:05 pm
DEC
-
DEN
1 stop5h 32m
United Airlines
Deal found 3/29$426
This United Airlines deal was found by Cheapflights users on 3/28. 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 6/119:05 pm
DEN
-
DEC
1 stop19h 51m
United Airlines
Sun 6/147:05 pm
DEC
-
DEN
1 stop6h 48m
United Airlines
Deal found 3/28$438
This United Airlines deal was found by Cheapflights users on 3/28. 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 6/39:05 pm
DEN
-
DEC
1 stop10h 52m
United Airlines
Sun 6/77:05 pm
DEC
-
DEN
1 stop12h 36m
United Airlines
Deal found 3/28$448
This United Airlines deal was found by Cheapflights users on 3/31. 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 10/207:32 am
DEN
-
DEC
1 stop24h 14m
United Airlines
Sat 10/246:55 pm
DEC
-
DEN
1 stop5h 23m
United Airlines
Deal found 3/31$454
This United Airlines deal was found by Cheapflights users on 3/27. 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 7/237:40 pm
DEN
-
DEC
1 stop12h 17m
United Airlines
Sun 7/269:37 am
DEC
-
DEN
1 stop22h 05m
United Airlines
Deal found 3/27$472
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Thu 6/189:05 pm
DEN
-
DEC
1 stop19h 51m
United Airlines
Sun 6/217:05 pm
DEC
-
DEN
1 stop12h 36m
United Airlines
Deal found 3/29$498
This United Airlines deal was found by Cheapflights users on 3/28. 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 6/107:40 am
DEN
-
DEC
2 stops9h 16m
United Airlines
Sun 6/147:05 pm
DEC
-
DEN
1 stop6h 48m
United Airlines
Deal found 3/28$627

Find flight deals from Denver to Decatur

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Decatur (DEC). 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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$426
(United Airlines)

One-way from

$256
(United Airlines)
Provider with most accurate pricing for Denver Intl-Decatur Arpt flight deals.
Search Deals
Provider most trusted by Cheapflights users for Denver Intl-Decatur Arpt flights.
Search Deals
From Denver Intl to Decatur Arpt
Search Deals
One-way flight from Denver Intl to Decatur Arpt
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Denver 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 1, 2026.
Use the filters below to find and compare flights from Denver to Decatur that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Mon 6/8

6:00 pm-5:56 pm

1 stop22h 56m

Decatur Arpt

Tue 6/16

7:05 pm-11:37 pm

1 stop5h 32m

$426

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Wed 6/10

9:05 pm-5:56 pm

1 stop19h 51m

Decatur Arpt

Sun 6/14

7:05 pm-12:53 am

1 stop6h 48m

$426
Quickest round-trip

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Tue 6/9

7:10 pm-8:57 am

1 stop12h 47m

Decatur Arpt

Tue 6/16

7:05 pm-11:37 pm

1 stop5h 32m

$426

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Thu 6/11

9:05 pm-5:56 pm

1 stop19h 51m

Decatur Arpt

Sun 6/14

7:05 pm-12:53 am

1 stop6h 48m

$438

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Wed 6/3

9:05 pm-8:57 am

1 stop10h 52m

Decatur Arpt

Sun 6/7

7:05 pm-6:41 am

1 stop12h 36m

$448

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Thu 7/23

7:40 pm-8:57 am

1 stop12h 17m

Decatur Arpt

Sun 7/26

9:37 am-6:42 am

1 stop22h 05m

$472

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Thu 6/18

9:05 pm-5:56 pm

1 stop19h 51m

Decatur Arpt

Sun 6/21

7:05 pm-6:41 am

1 stop12h 36m

$498
Cheapest one-way
Quickest one-way

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Tue 6/30

6:00 am-6:11 pm

1 stop11h 11m

$256

DenverDecatur

DEN - DEC

DENDEC

Denver Intl

Wed 7/1

7:40 am-8:57 am

2 stops24h 17m

$428

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Sorted by cheapest first

Compare providers for flights from Denver to Decatur

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 Denver to Decatur in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 Denver-Decatur, Illinois flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-Decatur, Illinois flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-Decatur, Illinois flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-Decatur, Illinois flights, Cheapflights users trust FlightHub the most. FlightHub 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 Denver-Decatur, Illinois 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 Denver to Decatur

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

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

Currently, July is the cheapest month in which you can book a flight from Denver to Decatur, Illinois (average of $46). Flying from Denver to Decatur, Illinois in January is currently the most expensive (average of $252). 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 Denver to Decatur. 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 Denver to Decatur, Illinois?

    Airlines like United Airlines fly from Denver to Decatur, Illinois in about 22h 56m. The time it takes to get you to your destination can typically vary by up to . The distance from Denver to Decatur, Illinois is about 837 mi.

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

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

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

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

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

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

    Currently, July is the cheapest month in which you can book a flight from Denver to Decatur, Illinois (average of $46). Flying from Denver to Decatur, Illinois in January is currently the most expensive (average of $252). 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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