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$285+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — LAS
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Decatur to Las Vegas

Cheapest flights from Decatur to Las Vegas
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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/25. 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 4/299:52 am
DEC
-
LAS
1 stop7h 27m
United Airlines
Sat 5/211:59 pm
LAS
-
DEC
1 stop6h 59m
United Airlines
Deal found 1/25$285
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Wed 2/189:50 am
DEC
-
LAS
1 stop7h 38m
United Airlines
Wed 2/2511:59 pm
LAS
-
DEC
1 stop6h 53m
United Airlines
Deal found 1/23$365
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/69:50 am
DEC
-
LAS
2 stops12h 37m
United Airlines
Tue 3/1011:59 pm
LAS
-
DEC
1 stop6h 53m
United Airlines
Deal found 1/25$374
This United Airlines deal was found by Cheapflights users on 1/24. 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 4/109:52 am
DEC
-
LAS
2 stops14h 21m
United Airlines
Mon 4/1311:55 pm
LAS
-
DEC
2 stops16h 07m
United Airlines
Deal found 1/24$380
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Wed 5/279:42 am
DEC
-
LAS
1 stop7h 15m
United Airlines
Sat 5/3011:30 pm
LAS
-
DEC
1 stop7h 16m
United Airlines
Deal found 1/23$415
This United Airlines deal was found by Cheapflights users on 1/25. 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 4/179:52 am
DEC
-
LAS
2 stops11h 54m
United Airlines
Mon 4/2011:55 pm
LAS
-
DEC
2 stops16h 07m
United Airlines
Deal found 1/25$430
This United Airlines deal was found by Cheapflights users on 1/25. 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 10/276:55 pm
DEC
-
LAS
2 stops25h 02m
United Airlines
Sat 10/3111:30 pm
LAS
-
DEC
1 stop8h 16m
United Airlines
Deal found 1/25$461

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$285
(United Airlines)
Provider with most accurate pricing for Decatur Arpt-Las Vegas Harry Reid Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Decatur Arpt-Las Vegas Harry Reid Intl flights.
Search Deals
From Decatur Arpt to Las Vegas Harry Reid Intl
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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 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Decatur to Las Vegas that are best for you.

Fly from

Decatur

Fly to

Las Vegas

Route

Depart

Return

Price

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Wed 4/29

9:52 am-6:23 pm

2 stops10h 31m

Las Vegas Harry Reid Intl

Sat 5/2

9:00 am-5:58 pm

1 stop6h 58m

$294

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Wed 2/18

9:50 am-3:28 pm

1 stop7h 38m

Las Vegas Harry Reid Intl

Wed 2/25

11:59 pm-8:52 am

1 stop6h 53m

$365

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Fri 3/6

9:50 am-8:27 pm

2 stops12h 37m

Las Vegas Harry Reid Intl

Tue 3/10

11:59 pm-8:52 am

1 stop6h 53m

$374

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Fri 4/10

9:52 am-10:13 pm

2 stops14h 21m

Las Vegas Harry Reid Intl

Mon 4/13

11:55 pm-6:02 pm

2 stops16h 07m

$380

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Wed 5/27

9:42 am-8:07 pm

2 stops12h 25m

Las Vegas Harry Reid Intl

Sat 5/30

7:30 pm-8:46 am

2 stops11h 16m

$380

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Fri 4/17

9:52 am-7:46 pm

2 stops11h 54m

Las Vegas Harry Reid Intl

Tue 4/21

9:00 am-6:02 pm

1 stop7h 02m

$425

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 6/18

9:42 am-8:07 pm

2 stops12h 25m

Las Vegas Harry Reid Intl

Sun 6/21

11:30 pm-8:46 am

1 stop7h 16m

$425

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Fri 3/27

7:15 pm-10:30 pm

1 stop29h 15m

$337

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 2/19

7:15 pm-11:30 pm

1 stop6h 15m

$345

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 2/26

9:50 am-3:28 pm

1 stop7h 38m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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.
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 Decatur to Las Vegas

What is the cheapest month to book a flight from Decatur, Illinois to Las Vegas?

Currently, May is the cheapest month in which you can book a flight from Decatur, Illinois to Las Vegas (average of $111). Flying from Decatur, Illinois to Las Vegas in September is currently the most expensive (average of $176). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 January 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.
United Airlines
7.4
Good
9,199 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,199 reviews
United Airlines
7.4
Good
9,199 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.

  • How long is the flight from Decatur, Illinois to Las Vegas?

    A quick flight from Decatur, Illinois to Las Vegas can take about 10h 31m. United Airlines provides one of the quickest options available for as low as $294. Decatur, Illinois and Las Vegas are separated by a distance of 1449 mi.

  • What is the cheapest airline to fly from Decatur, Illinois to Las Vegas round-trip?

    Currently priced at $264, United Airlines will fly you from Decatur, Illinois to Las Vegas and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from Decatur to Las Vegas that include hotel bookings?

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

  • How can I find direct flights from Decatur to Las Vegas?

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

  • Can I find deals for business class flights from Decatur to Las Vegas?

    Yes. Cheapflights offers flight deals from Decatur to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Decatur, Illinois to Las Vegas?

    Currently, May is the cheapest month in which you can book a flight from Decatur, Illinois to Las Vegas (average of $111). Flying from Decatur, Illinois to Las Vegas in September is currently the most expensive (average of $176). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
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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 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$395FlexibilityNo cancel feeOn-time69%

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