How long is the flight from Colorado to Decatur, Illinois?

United Airlines can get you from Colorado to Decatur, Illinois in just under 5h 40m. Your travel time can differ by up to . The distance from Colorado to Decatur, Illinois is about 837 mi.

In terms of precipitation, rainfall in Decatur, Illinois ranges from 1.7 - 4.4 inches per month. June is typically the wettest month, when rainfall can reach 4.4 in. January is typically the driest time to visit Decatur, Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Decatur, Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

What is the cheapest time of day to fly from CO to DEC?

When flying from Colorado to Decatur, Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Decatur from Colorado?

If you book a flight to Decatur from Colorado, you will be flying to Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.

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

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

How can I find direct flights from Colorado to Decatur?

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

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

Yes. Cheapflights offers flight deals from Colorado 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.

$265+ Cheap Flights from Colorado to Decatur, IL

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Colorado to Decatur 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 Colorado to Decatur

Cheapest

Best

Last-minute

One-way

Cheapest flights from Colorado to Decatur
Explore the most affordable flight options available from Colorado to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Thu 10/2911:15 am -

1 stop5h 40m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/22

$434

Fri 12/411:15 am -

1 stop5h 55m

Mon 12/76:57 pm -

1 stop5h 17m

Deal found 9/23

$449

Thu 10/225:36 pm -

1 stop24h 07m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/22

$462

Fri 10/234:40 pm -

1 stop25h 03m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/22

$479

Mon 11/27:12 pm -

1 stop21h 58m

Sun 11/89:10 am -

1 stop24h 36m

Deal found 9/22

$490

Fri 10/236:00 am -

1 stop11h 43m

Sat 10/247:18 pm -

1 stop5h 36m

Deal found 9/22

$495

Mon 11/27:45 am -

1 stop9h 25m

Tue 11/37:02 pm -

1 stop16h 24m

Deal found 9/22

$522

Best flights from Colorado to Decatur
Discover carefully curated flight deals from Colorado to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Thu 10/2911:15 am -

1 stop5h 40m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/24

$434

Fri 12/411:15 am -

1 stop5h 55m

Mon 12/76:57 pm -

1 stop5h 17m

Deal found 9/23

$449

Thu 10/225:36 pm -

1 stop24h 07m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/22

$462

Fri 10/236:00 am -

1 stop11h 43m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/23

$479

Fri 10/235:30 pm -

2 stops24h 13m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/22

$554

Tue 10/68:59 pm -

2 stops20h 44m

Sat 10/107:18 pm -

1 stop5h 36m

Deal found 9/21

$578

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated September 25, 2026 and is based on user searches.

Tue 10/68:59 pm -

2 stops20h 44m

Sat 10/107:18 pm -

1 stop5h 36m

Deal found 9/21

$578

Wed 10/77:45 am -

1 stop23h 50m

Sun 10/119:12 am -

1 stop22h 27m

Deal found 9/21

$614

Thu 10/225:36 pm -

1 stop24h 07m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/22

$462

Fri 10/234:40 pm -

1 stop25h 03m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/22

$479

Fri 10/236:00 am -

1 stop11h 43m

Sat 10/247:18 pm -

1 stop5h 36m

Deal found 9/22

$495

Thu 10/2911:15 am -

1 stop5h 40m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/22

$434

Find flight deals from Colorado to Decatur

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$434 (United Airlines)
One-way from	$265 (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 Colorado to Decatur Arpt

Search Deals

One-way flight from Colorado to Decatur Arpt

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Sun 11/29

7:45 am-8:35 am

1 stop23h 50m

Decatur Arpt

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$372

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Thu 10/15

9:01 pm-6:43 pm

2 stops20h 42m

Decatur Arpt

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$396

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Thu 10/29

11:15 am-5:55 pm

1 stop5h 40m

Decatur Arpt

Mon 11/2

6:57 pm-11:31 pm

1 stop5h 34m

$434

Quickest round-trip

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Fri 12/4

11:15 am-6:10 pm

1 stop5h 55m

Decatur Arpt

Mon 12/7

6:57 pm-11:14 pm

1 stop5h 17m

$449

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Thu 10/22

5:36 pm-6:43 pm

1 stop24h 07m

Decatur Arpt

Mon 10/26

6:57 pm-11:31 pm

1 stop5h 34m

$462

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Fri 10/23

6:00 am-6:43 pm

1 stop11h 43m

Decatur Arpt

Mon 10/26

6:57 pm-11:31 pm

1 stop5h 34m

$479

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Fri 10/23

5:30 pm-6:43 pm

2 stops24h 13m

Decatur Arpt

Sun 10/25

6:57 pm-11:31 pm

1 stop5h 34m

$554

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Tue 10/6

8:59 pm-6:43 pm

2 stops20h 44m

Decatur Arpt

Sat 10/10

7:18 pm-11:54 pm

1 stop5h 36m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/23

Sorted by cheapest first

Best time to book a flight from Colorado to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Colorado with our price prediction graph.

DEN-DEC

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 Colorado to Decatur

USCO-DEC

DEN-DEC

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to Decatur from Colorado?
If you book a flight to Decatur from Colorado, you will be flying to Decatur Arpt, which is the city’s only airport. Decatur Arpt (DEC) is located 4.7 mi from the center of Decatur.
How long is the flight from Colorado to Decatur, Illinois?
United Airlines can get you from Colorado to Decatur, Illinois in just under 5h 40m. Your travel time can differ by up to . The distance from Colorado to Decatur, Illinois is about 837 mi.
Can I find deals for flights from Colorado to Decatur that include hotel bookings?
Yes. In addition to deals on Colorado to Decatur flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Colorado to Decatur?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado to Decatur.
Can I find deals for business class flights from Colorado to Decatur?
Yes. Cheapflights offers flight deals from Colorado 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.

See more FAQs

Effingham

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Decatur flight routes

Flights by cabin class

Other flight options

Popular flights

Top destinations

Alternative routes for Colorado to Decatur

Newark to O'Hare Intl flights

LaGuardia to O'Hare Intl flights

John F Kennedy Intl to O'Hare Intl flights

Dallas/Fort Worth to O'Hare Intl flights

Los Angeles to O'Hare Intl flights

Reagan-National to O'Hare Intl flights

Dulles Intl to O'Hare Intl flights

Baltimore to O'Hare Intl flights

Dallas/Fort Worth to Midway flights

Boston to O'Hare Intl flights

San Francisco to O'Hare Intl flights

Philadelphia to O'Hare Intl flights

Newark to Midway flights

Seattle to O'Hare Intl flights

Hobby to O'Hare Intl flights

Atlanta to O'Hare Intl flights

Ontario to O'Hare Intl flights

Denver to O'Hare Intl flights

Atlanta to Midway flights

Orlando to O'Hare Intl flights

George Bush Intcntl to O'Hare Intl flights

Minneapolis to O'Hare Intl flights

Sky Harbor Intl to O'Hare Intl flights

Tampa to O'Hare Intl flights

Fort Lauderdale to O'Hare Intl flights

Dulles Intl to Midway flights

Miami to O'Hare Intl flights

Philadelphia to Midway flights

Austin to O'Hare Intl flights

LaGuardia to Midway flights

Baltimore to Midway flights

Raleigh to O'Hare Intl flights

Boston to Midway flights

Charlotte to O'Hare Intl flights

John F Kennedy Intl to Midway flights

San Diego to O'Hare Intl flights

Denver to Midway flights

Santa Ana to O'Hare Intl flights

Los Angeles to Midway flights

Minneapolis to Midway flights

Portland to O'Hare Intl flights

LaGuardia to St. Louis flights

Newark to St. Louis flights

Orlando to Midway flights

Reagan-National to Midway flights

Tampa to Midway flights

New Orleans to O'Hare Intl flights

San Francisco to Midway flights

San Jose to O'Hare Intl flights

Jacksonville to O'Hare Intl 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.

$265+ Cheap flights from Colorado to Decatur, IL (DEC)

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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado to Decatur with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colorado to Decatur

Cheapest flights from Colorado to DecaturExplore the most affordable flight options available from Colorado to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Explore the most affordable flight options available from Colorado to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Best flights from Colorado to DecaturDiscover carefully curated flight deals from Colorado to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Discover carefully curated flight deals from Colorado to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Last-minute flights from Colorado to DecaturDiscover last-minute flight deals from Colorado to Decatur. Data last updated September 25, 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Decatur. Data last updated September 25, 2026 and is based on user searches.

One-way flights from Colorado to DecaturSearch for one-way flight options from Colorado to Decatur. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.

Search for one-way flight options from Colorado to Decatur. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.

Find flight deals from Colorado to Decatur

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

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

Best time to book a flight from Colorado to Decatur

Have a flexible travel schedule? Discover the best time to fly to Decatur from Colorado with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly into for flights to Decatur from Colorado?

How long is the flight from Colorado to Decatur, Illinois?

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

How can I find direct flights from Colorado to Decatur?

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

Traveling to a place near Decatur?

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 Colorado to Decatur

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Decatur by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Decatur

Explore flights to Decatur departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.

Search flights from Colorado to Decatur by cabin class

Find flights from Colorado to Decatur, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Colorado and Decatur flights

Browse other Colorado and Decatur flight options. Last updated on September 25, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Colorado to Decatur flights

Consider these flights traveling from Colorado to Decatur.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Colorado to Decatur
Explore the most affordable flight options available from Colorado to Decatur. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Best flights from Colorado to Decatur
Discover carefully curated flight deals from Colorado to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated September 25, 2026 and is based on user searches.

One-way flights from Colorado to Decatur
Search for one-way flight options from Colorado to Decatur. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.