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

United Airlines can get you from Colorado to Decatur, Illinois in just under 7h 03m. 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

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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 October 1, 2026.

Thu 10/2911:15 am -

1 stop5h 40m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/29

$434

Fri 10/236:00 am -

1 stop11h 43m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/27

$479

Thu 12/243:50 pm -

1 stop25h 06m

Tue 12/299:18 am -

1 stop15h 35m

Deal found 9/29

$490

Wed 12/237:09 pm -

1 stop12h 34m

Tue 12/299:18 am -

1 stop15h 35m

Deal found 9/29

$507

Sat 10/311:40 am -

1 stop6h 03m

Tue 10/67:18 pm -

1 stop5h 35m

Deal found 9/29

$539

Thu 12/244:20 pm -

1 stop24h 36m

Mon 12/289:18 am -

1 stop15h 02m

Deal found 9/29

$572

Wed 12/235:50 am -

1 stop25h 53m

Mon 12/289:18 am -

1 stop15h 35m

Deal found 9/29

$589

Sat 10/248:00 am -

2 stops9h 43m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/26

$612

Tue 10/1311:15 am -

1 stop6h 28m

Sat 10/177:18 pm -

1 stop13h 21m

Deal found 9/27

$624

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 October 1, 2026.

Thu 10/299:52 am -

1 stop7h 03m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/30

$434

Sat 10/2411:40 am -

1 stop6h 03m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/26

$434

Fri 10/236:00 am -

1 stop11h 43m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/27

$479

Thu 12/243:50 pm -

1 stop25h 06m

Tue 12/299:18 am -

1 stop15h 35m

Deal found 9/29

$490

Wed 12/235:50 am -

1 stop25h 53m

Mon 12/289:18 am -

1 stop15h 35m

Deal found 9/29

$589

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated October 1, 2026 and is based on user searches.

Sat 10/311:40 am -

1 stop6h 03m

Tue 10/67:18 pm -

1 stop5h 35m

Deal found 9/29

$539

Tue 10/1311:15 am -

1 stop6h 28m

Sat 10/177:18 pm -

1 stop13h 21m

Deal found 9/27

$624

Wed 10/144:40 pm -

1 stop24h 13m

Sun 10/187:18 pm -

1 stop13h 21m

Deal found 9/29

$704

Fri 10/236:00 am -

1 stop11h 43m

Mon 10/266:57 pm -

1 stop5h 34m

Deal found 9/27

$479

Sat 10/248:00 am -

2 stops9h 43m

Sun 10/256:57 pm -

1 stop5h 34m

Deal found 9/26

$612

Thu 10/2911:15 am -

1 stop5h 40m

Mon 11/26:57 pm -

1 stop5h 34m

Deal found 9/29

$434

Find flight deals from Colorado to Decatur

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Round-trip from	$434 (United Airlines)
One-way from	$265 (United Airlines)

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From Colorado to Decatur Arpt

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One-way flight from Colorado to Decatur Arpt

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Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Wed 2/17

8:30 pm-5:51 pm

1 stop20h 21m

Decatur Arpt

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$265

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Thu 10/29

9:52 am-5:55 pm

1 stop7h 03m

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

Sat 10/24

11:40 am-6:43 pm

1 stop6h 03m

Decatur Arpt

Sun 10/25

6:57 pm-11:31 pm

1 stop5h 34m

$434

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

Thu 12/24

3:50 pm-5:56 pm

1 stop25h 06m

Decatur Arpt

Tue 12/29

9:18 am-11:53 pm

1 stop15h 35m

$490

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Wed 12/23

5:50 am-8:43 am

1 stop25h 53m

Decatur Arpt

Mon 12/28

9:18 am-11:53 pm

1 stop15h 35m

$589

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/28

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.

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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 7h 03m. 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.

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$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 2/17. 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

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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 October 1, 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 October 1, 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 October 1, 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 October 1, 2026.

Last-minute flights from Colorado to DecaturDiscover last-minute flight deals from Colorado to Decatur. Data last updated October 1, 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Decatur. Data last updated October 1, 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 October 1, 2026.

Search for one-way flight options from Colorado to Decatur. Find affordable one-way fares based on user searches. Data last updated October 1, 2026.

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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?

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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 October 1, 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 October 1, 2026.

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated October 1, 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 October 1, 2026.