$268+ Cheap flights from Decatur, IL to Las Vegas (DEC - LAS)
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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — LAS
Nov 25 — Dec 21
Round-trip
1 adult, Economy
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Find cheap flights from Decatur to Las Vegas 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 Decatur to Las Vegas
Cheapest
Best
Last-minute
One-way
Cheapest flights from Decatur to Las VegasExplore the most affordable flight options available from Decatur to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
Explore the most affordable flight options available from Decatur to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/229:10 am -
1 stop7h 48m
Thu 11/2611:58 pm -
1 stop6h 11m
Deal found 10/23![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/69:10 am -
1 stop7h 48m
Tue 11/1011:59 pm -
1 stop6h 10m
Deal found 10/22![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/187:03 pm -
1 stop6h 58m
Wed 12/2311:50 pm -
1 stop6h 53m
Deal found 10/22![United Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/229:10 am -
1 stop7h 48m
Wed 11/252:34 pm -
1 stop15h 35m
Deal found 10/23![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/38:31 am -
2 stops11h 36m
Tue 12/89:00 am -
1 stop7h 10m
Deal found 10/21![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/38:31 am -
1 stop12h 01m
Sun 12/67:21 pm -
2 stops10h 34m
Deal found 10/21![United Airlines logo]()
$497
Best flights from Decatur to Las VegasDiscover carefully curated flight deals from Decatur to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
Discover carefully curated flight deals from Decatur to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/229:10 am -
2 stops10h 36m
Thu 11/267:50 pm -
2 stops10h 19m
Deal found 10/23![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 10/24. 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 1/89:25 am -
1 stop9h 19m
Tue 1/129:00 am -
1 stop7h 06m
Deal found 10/24![United Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/187:03 pm -
1 stop6h 58m
Wed 12/2311:50 pm -
1 stop6h 53m
Deal found 10/22![United Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/38:31 am -
2 stops11h 36m
Sat 12/59:00 am -
1 stop7h 10m
Deal found 10/22![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/118:31 am -
2 stops10h 54m
Mon 12/149:00 am -
1 stop7h 10m
Deal found 10/23![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/48:31 am -
2 stops13h 17m
Sun 12/67:21 pm -
2 stops10h 34m
Deal found 10/21![United Airlines logo]()
$499
Last-minute flights from Decatur to Las VegasDiscover last-minute flight deals from Decatur to Las Vegas. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Decatur to Las Vegas. Data last updated October 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/59:10 am -
1 stop7h 48m
Sun 11/811:58 pm -
1 stop6h 11m
Deal found 10/21![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/69:10 am -
1 stop7h 48m
Tue 11/1011:59 pm -
1 stop6h 10m
Deal found 10/22![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/229:10 am -
1 stop7h 48m
Thu 11/2611:58 pm -
1 stop6h 11m
Deal found 10/23![United Airlines logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/229:10 am -
1 stop7h 48m
Wed 11/252:34 pm -
1 stop15h 35m
Deal found 10/23![United Airlines logo]()
$485
One-way flights from Decatur to Las VegasSearch for one-way flight options from Decatur to Las Vegas. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
Search for one-way flight options from Decatur to Las Vegas. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/209:10 am -
1 stop26h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Mon 12/217:03 pm -
1 stop20h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![United Airlines logo]()
$316
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/319:18 am -
1 stop15h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![United Airlines logo]()
$348
Find flight deals from Decatur to Las Vegas
Discover tips and strategies to find the most affordable flight options for your journey from Decatur (DEC) to Las Vegas (LAS). 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 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $374 (United Airlines) |
One-way from | $268 (United Airlines) |
Cheapflights Fare Finder
Customize your flight search to find flights from Decatur to Las Vegas 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 26, 2026.
Use the filters below to find and compare flights from Decatur to Las Vegas that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Mon 12/21
7:03 pm-1:22 pm
1 stop20h 19m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$316
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Thu 12/31
9:18 am-10:38 pm
1 stop15h 20m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$348
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Sun 11/22
9:10 am-5:46 pm
2 stops10h 36m
Las Vegas Harry Reid Intl
Thu 11/26
7:50 pm-8:09 am
2 stops10h 19m
$389
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Fri 1/8
9:25 am-4:44 pm
1 stop9h 19m
Las Vegas Harry Reid Intl
Tue 1/12
9:00 am-6:06 pm
1 stop7h 06m
$484
Quickest round-trip
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Fri 12/18
7:03 pm-12:01 am
1 stop6h 58m
Las Vegas Harry Reid Intl
Wed 12/23
11:50 pm-8:43 am
1 stop6h 53m
$484
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Thu 12/3
8:31 am-6:07 pm
2 stops11h 36m
Las Vegas Harry Reid Intl
Sat 12/5
9:00 am-6:10 pm
1 stop7h 10m
$494
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Fri 12/11
8:31 am-5:25 pm
2 stops10h 54m
Las Vegas Harry Reid Intl
Mon 12/14
9:00 am-6:10 pm
1 stop7h 10m
$494
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Fri 12/4
8:31 am-7:48 pm
2 stops13h 17m
Las Vegas Harry Reid Intl
Sun 12/6
7:21 pm-7:55 am
2 stops10h 34m
$499
DecaturLas Vegas
DEC Decatur Arpt - LAS Las Vegas Harry Reid Intl
DECLAS
Decatur Arpt
Fri 11/20
9:10 am-11:57 pm
3 stops16h 47m
Las Vegas Harry Reid Intl
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$712
Sorted by cheapest first
Compare providers for flights from Decatur to Las Vegas
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 Decatur to Las Vegas 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 Decatur, Illinois-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Decatur, Illinois-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Decatur, Illinois-Las Vegas flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Decatur, Illinois-Las Vegas 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 Decatur, Illinois-Las Vegas 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 Decatur to Las Vegas
Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Decatur with our price prediction graph.
DEC-LAS
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.
Reviews of airlines servicing Las Vegas
Get insights into the airlines that provide service to Las Vegas. 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 Las Vegas. Reviews last updated October 26, 2026.
Peruse reviews from past customers who have flown with United Airlines from Decatur to Las Vegas to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Boarding
7.7
Comfort
7.3
Food
6.7
Overall
7.3
Crew
8.1
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreDawn,Aug 2026
ORD - DEN
Related info for your journey
Find useful and relevant information for your journey from Decatur to Las Vegas. 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 Las Vegas?
Book flights to Las Vegas if you plan to visit one of these locationsParadise
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Decatur and Las Vegas flights
Browse other Decatur and Las Vegas flight options. Last updated on October 26, 2026.
Other flights from Decatur
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Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Decatur to Las Vegas
Discover the top airline that operate flights from Decatur to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$264 | Average$334 | FlexibilityNo cancel fee | On-time69% |