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$213+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — DEN
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap flight deals from Decatur to Colorado

Keep the following information in mind while searching for Decatur to Colorado flight deals. Data was last updated julio 31, 2025.

Round-trip from

$346
(United Airlines)

One-way from

$213
(United Airlines)
From Decatur Arpt to Colorado
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One-way flight from Decatur Arpt to Colorado
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Find 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 julio 31, 2025.

This United Airlines deal was found by Cheapflights users on 7/30. 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.
mié. 8/209:42 amDEC - DEN
1 stop7h 53mUnited Airlines
sáb. 8/308:28 pmDEN - DEC
1 stop11h 28mUnited Airlines
Deal found 7/30$346

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 julio 31, 2025.
Use the filters below to find and compare flights from Decatur to Colorado that are best for you.

Fly from

Decatur

Fly to

Colorado

Route

Depart

Return

Price

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

mié. 8/20

6:55 pm-11:03 pm

1 stop5h 08m

Denver Intl

mar. 8/26

6:00 pm-5:59 pm

1 stop22h 59m

$346

DecaturDenver

DEC - DEN

DECDEN

Decatur Arpt

vie. 9/19

6:55 pm-8:57 am

1 stop15h 02m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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

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

Currently, October is the cheapest month in which you can book a flight from Decatur, Illinois to Colorado (average of $197). Flying from Decatur, Illinois to Colorado in March is currently the most expensive (average of $278). 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.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Colorado. Reviews last updated julio 31, 2025.
Read through reviews of airlines operating flights from Decatur to Colorado, such as United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

EWR - DEN

Terribly delayed flight, missed ongoing flight, hotel very downmarket Food voucher not accepted in hotel
United Airlines
7.4
Good
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Oct 2024

EWR - DEN

Terribly delayed flight, missed ongoing flight, hotel very downmarket Food voucher not accepted in hotel

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.

  • 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.

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

    Currently, October is the cheapest month in which you can book a flight from Decatur, Illinois to Colorado (average of $197). Flying from Decatur, Illinois to Colorado in March is currently the most expensive (average of $278). 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.

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