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$225+ Cheap flights from Decatur, IL to Las Vegas (DEC - LAS)

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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
DEC — LAS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$299
(United Airlines)

One-way from

$225
(United Airlines)
From Decatur Arpt to Las Vegas Harry Reid Intl
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One-way flight from Decatur Arpt to Las Vegas Harry Reid Intl
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Find 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 September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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 10/29:38 amDEC - LAS
2 stops13h 54mUnited Airlines
Mon 10/611:59 pmLAS - DEC
1 stop6h 52mUnited Airlines
Deal found 9/10$299
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/259:38 amDEC - LAS
2 stops12h 04mUnited Airlines
Mon 9/296:27 pmLAS - DEC
2 stops12h 24mUnited Airlines
Deal found 9/10$329
This United Airlines deal was found by Cheapflights users on 9/11. 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 11/89:30 amDEC - LAS
2 stops14h 33mUnited Airlines
Tue 11/117:15 amLAS - DEC
1 stop8h 37mUnited Airlines
Deal found 9/11$354
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/179:42 amDEC - LAS
2 stops11h 07mUnited Airlines
Wed 9/246:28 pmLAS - DEC
2 stops12h 23mUnited Airlines
Deal found 9/10$359
This United Airlines deal was found by Cheapflights users on 9/11. 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 12/49:49 amDEC - LAS
2 stops12h 12mUnited Airlines
Sat 12/62:10 pmLAS - DEC
1 stop25h 42mUnited Airlines
Deal found 9/11$383
This United Airlines deal was found by Cheapflights users on 9/11. 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 9/269:38 amDEC - LAS
1 stop7h 18mUnited Airlines
Tue 9/305:27 pmLAS - DEC
1 stop13h 24mUnited Airlines
Deal found 9/11$398
This United Airlines deal was found by Cheapflights users on 9/9. 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 12/69:30 amDEC - LAS
2 stops15h 55mUnited Airlines
Mon 12/811:59 pmLAS - DEC
1 stop15h 53mUnited Airlines
Deal found 9/9$399
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/159:38 amDEC - LAS
1 stop8h 40mUnited Airlines
Mon 10/207:58 pmLAS - DEC
2 stops10h 53mUnited Airlines
Deal found 9/9$405
This United Airlines deal was found by Cheapflights users on 9/11. 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 9/239:42 amDEC - LAS
1 stop7h 05mUnited Airlines
Tue 10/216:27 pmLAS - DEC
2 stops12h 24mUnited Airlines
Deal found 9/11$409

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 September 11, 2025.
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

Thu 9/25

9:38 am-7:42 pm

2 stops12h 04m

Las Vegas Harry Reid Intl

Mon 9/29

6:27 pm-8:51 am

2 stops12h 24m

$329

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Sat 1/31

7:09 pm-11:19 pm

1 stop6h 10m

Las Vegas Harry Reid Intl

Wed 2/4

6:00 am-6:01 pm

2 stops10h 01m

$354

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Fri 12/12

9:49 am-8:01 pm

2 stops12h 12m

Las Vegas Harry Reid Intl

Tue 12/16

11:59 pm-8:48 am

1 stop6h 49m

$354

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Sat 11/8

9:30 am-10:03 pm

2 stops14h 33m

Las Vegas Harry Reid Intl

Tue 11/11

6:00 am-5:52 pm

2 stops9h 52m

$359

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 12/4

9:49 am-8:01 pm

2 stops12h 12m

Las Vegas Harry Reid Intl

Sat 12/6

5:20 am-5:52 pm

2 stops10h 32m

$359

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Tue 3/3

3:20 pm-12:01 am

2 stops10h 41m

Las Vegas Harry Reid Intl

Sat 3/7

7:06 pm-1:31 pm

3 stops16h 25m

$364

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Sat 12/6

7:08 pm-9:39 am

1 stop16h 31m

Las Vegas Harry Reid Intl

Tue 12/9

11:59 pm-8:48 am

1 stop6h 49m

$389

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 12/11

7:08 pm-12:57 pm

1 stop19h 49m

Las Vegas Harry Reid Intl

Tue 12/16

11:59 pm-8:48 am

1 stop6h 49m

$389

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Thu 10/2

6:55 pm-10:02 pm

1 stop29h 07m

Las Vegas Harry Reid Intl

Mon 10/6

11:59 pm-8:51 am

1 stop6h 52m

$389

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

Mon 12/15

7:08 pm-9:39 am

1 stop16h 31m

$225

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 12 results
1
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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, August is the cheapest month in which you can book a flight from Decatur, Illinois to Las Vegas (average of $198). Flying from Decatur, Illinois to Las Vegas in March is currently the most expensive (average of $269). 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 September 11, 2025.
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
8,937 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 12h 04m. United Airlines provides one of the quickest options available for as low as $329. 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 $263, 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, August is the cheapest month in which you can book a flight from Decatur, Illinois to Las Vegas (average of $198). Flying from Decatur, Illinois to Las Vegas in March is currently the most expensive (average of $269). 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
Paradise
Henderson
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Sunrise Manor
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Primm
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Mesquite
Needles
Boulder City

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$263Average$405FlexibilityNo cancel feeOn-time69%

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