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

United Airlines can get you from Colorado to Decatur, Illinois in just under 6h 28m. 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.

$364+ Cheap Flights from Colorado to Decatur, IL

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Cheap flight deals from Colorado to Decatur

Cheapest

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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 August 21, 2026.

Sat 10/2411:15 am -

1 stop6h 28m

Wed 10/289:10 am -

1 stop7h 07m

Deal found 8/20

$394

Fri 9/112:50 pm -

1 stop26h 54m

Mon 9/147:20 pm -

1 stop5h 08m

Deal found 8/16

$429

Fri 10/98:29 pm -

1 stop21h 14m

Mon 10/129:12 am -

1 stop22h 27m

Deal found 8/19

$452

Sat 9/57:10 pm -

1 stop10h 59m

Wed 9/99:13 am -

1 stop7h 04m

Deal found 8/20

$491

Fri 10/98:29 pm -

1 stop21h 14m

Sun 10/117:18 pm -

1 stop13h 21m

Deal found 8/19

$493

Thu 9/106:00 am -

1 stop11h 44m

Mon 9/147:20 pm -

2 stops12h 15m

Deal found 8/16

$507

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 August 21, 2026.

Sat 10/2411:15 am -

1 stop6h 28m

Wed 10/289:10 am -

1 stop7h 07m

Deal found 8/20

$394

Fri 10/98:29 pm -

1 stop21h 14m

Mon 10/129:12 am -

1 stop22h 27m

Deal found 8/19

$452

Sat 9/57:10 pm -

1 stop10h 59m

Wed 9/99:13 am -

1 stop7h 04m

Deal found 8/20

$491

Fri 10/98:29 pm -

1 stop21h 14m

Sun 10/117:18 pm -

1 stop13h 21m

Deal found 8/19

$493

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated August 21, 2026 and is based on user searches.

Thu 9/36:18 pm -

1 stop12h 19m

Mon 9/77:20 pm -

1 stop13h 19m

Deal found 8/19

$684

Sat 9/57:10 pm -

1 stop10h 59m

Wed 9/99:13 am -

1 stop7h 04m

Deal found 8/20

$491

Mon 9/76:00 am -

1 stop10h 59m

Fri 9/117:20 pm -

1 stop13h 19m

Deal found 8/18

$594

Tue 9/86:17 pm -

1 stop12h 48m

Thu 9/109:12 am -

1 stop11h 33m

Deal found 8/20

$574

Thu 9/104:00 pm -

1 stop15h 05m

Mon 9/147:20 pm -

1 stop5h 08m

Deal found 8/16

$417

Fri 9/112:50 pm -

1 stop26h 54m

Mon 9/147:20 pm -

1 stop5h 08m

Deal found 8/16

$429

Find flight deals from Colorado to Decatur

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Round-trip from	$394 (United Airlines)
One-way from	$364 (United Airlines)

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Price

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DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Sat 10/24

11:15 am-6:43 pm

1 stop6h 28m

Decatur Arpt

Wed 10/28

9:10 am-3:17 pm

1 stop7h 07m

$394

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Fri 10/9

8:29 pm-6:43 pm

1 stop21h 14m

Decatur Arpt

Mon 10/12

9:12 am-6:39 am

1 stop22h 27m

$452

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Sat 9/5

7:10 pm-7:09 am

1 stop10h 59m

Decatur Arpt

Wed 9/9

9:13 am-3:17 pm

1 stop7h 04m

$491

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Fri 10/9

8:29 pm-6:43 pm

1 stop21h 14m

Decatur Arpt

Sun 10/11

7:18 pm-7:39 am

1 stop13h 21m

$493

Cheapest one-way

Quickest one-way

DenverDecatur

DEN Denver Intl - DEC Decatur Arpt

DENDEC

Denver Intl

Thu 9/24

11:15 am-6:43 pm

1 stop6h 28m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

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

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Everything you need to know about your flight from Colorado to Decatur

USCO-DEC

DEN-DEC

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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 6h 28m. 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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$364+ Cheap flights from Colorado to Decatur, IL (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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.

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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 August 21, 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 August 21, 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 August 21, 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 August 21, 2026.

Last-minute flights from Colorado to DecaturDiscover last-minute flight deals from Colorado to Decatur. Data last updated August 21, 2026 and is based on user searches.

Discover last-minute flight deals from Colorado to Decatur. Data last updated August 21, 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 August 21, 2026.

Search for one-way flight options from Colorado to Decatur. Find affordable one-way fares based on user searches. Data last updated August 21, 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?

Traveling to a place near Decatur?

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Other flights 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 August 21, 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 August 21, 2026.

Last-minute flights from Colorado to Decatur
Discover last-minute flight deals from Colorado to Decatur. Data last updated August 21, 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 August 21, 2026.