$265+ Cheap flights from Denver to Decatur, IL (DEN - 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.
DEN — DEC
Nov 1 — Nov 81
Round-trip
1 adult, Economy
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Find cheap flights from Denver 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 Denver to Decatur
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Last-minute
One-way
Cheapest flights from Denver to DecaturExplore 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 October 2, 2026.
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 October 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/2911:15 am -
1 stop5h 40m
Mon 11/26:57 pm -
1 stop5h 34m
Deal found 9/29![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/236:00 am -
1 stop11h 43m
Mon 10/266:57 pm -
1 stop5h 34m
Deal found 9/27![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/29. 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 12/243:50 pm -
1 stop25h 06m
Tue 12/299:18 am -
1 stop15h 35m
Deal found 9/29![United Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 12/237:09 pm -
1 stop12h 34m
Tue 12/299:18 am -
1 stop15h 35m
Deal found 9/29![United Airlines logo]()
$507
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sat 10/311:40 am -
1 stop6h 03m
Tue 10/67:18 pm -
1 stop5h 35m
Deal found 9/29![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 10/1711:40 am -
1 stop6h 03m
Wed 10/217:18 pm -
1 stop5h 36m
Deal found 10/1![United Airlines logo]()
$545
This United Airlines deal was found by Cheapflights users on 9/29. 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 12/244:20 pm -
1 stop24h 36m
Mon 12/289:18 am -
1 stop15h 02m
Deal found 9/29![United Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 12/235:50 am -
1 stop25h 53m
Mon 12/289:18 am -
1 stop15h 35m
Deal found 9/29![United Airlines logo]()
$589
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 10/1311:15 am -
1 stop6h 28m
Sat 10/177:18 pm -
1 stop13h 21m
Deal found 9/27![United Airlines logo]()
$624
Best flights from Denver to DecaturDiscover carefully curated flight deals from Denver to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
Discover carefully curated flight deals from Denver to Decatur that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/2911:15 am -
1 stop5h 40m
Mon 11/26:57 pm -
1 stop5h 34m
Deal found 9/27![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/236:00 am -
1 stop11h 43m
Mon 10/266:57 pm -
1 stop5h 34m
Deal found 9/27![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/29. 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 12/243:50 pm -
1 stop25h 06m
Tue 12/299:18 am -
1 stop15h 35m
Deal found 9/29![United Airlines logo]()
$490
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 3/65:42 pm -
1 stop14h 04m
Thu 3/116:55 pm -
1 stop6h 03m
Deal found 10/1![United Airlines logo]()
$498
Last-minute flights from Denver to DecaturDiscover last-minute flight deals from Denver to Decatur. Data last updated October 2, 2026 and is based on user searches.
Discover last-minute flight deals from Denver to Decatur. Data last updated October 2, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Sat 10/311:40 am -
1 stop6h 03m
Tue 10/67:18 pm -
1 stop5h 35m
Deal found 9/29![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 10/1311:15 am -
1 stop6h 28m
Sat 10/177:18 pm -
1 stop13h 21m
Deal found 9/27![United Airlines logo]()
$624
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Wed 10/144:40 pm -
1 stop24h 13m
Sun 10/187:18 pm -
1 stop13h 21m
Deal found 9/29![United Airlines logo]()
$704
This United Airlines deal was found by Cheapflights users on 10/1. 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.
Sat 10/1711:40 am -
1 stop6h 03m
Wed 10/217:18 pm -
1 stop5h 36m
Deal found 10/1![United Airlines logo]()
$545
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Fri 10/236:00 am -
1 stop11h 43m
Mon 10/266:57 pm -
1 stop5h 34m
Deal found 9/27![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/29. 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 10/2911:15 am -
1 stop5h 40m
Mon 11/26:57 pm -
1 stop5h 34m
Deal found 9/29![United Airlines logo]()
$434
One-way flights from Denver to DecaturSearch for one-way flight options from Denver to Decatur. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
Search for one-way flight options from Denver to Decatur. Find affordable one-way fares based on user searches. Data last updated October 2, 2026.
This United Airlines deal was found by Cheapflights users on 9/28. 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 2/178:30 pm -
1 stop20h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$265
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 October 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $434 (United Airlines) |
One-way from | $265 (United Airlines) |
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 7,457,451 searches. Data last updated October 2, 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
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
Quickest round-trip
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
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
Sat 3/6
5:42 pm-8:46 am
1 stop14h 04m
Decatur Arpt
Thu 3/11
6:55 pm-11:58 pm
1 stop6h 03m
$498
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
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.
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.
Traveling to a place near Decatur?
Book flights to Decatur if you plan to visit one of these locationsEffingham
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