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

Currently priced at $354, 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.

What is the cheapest day to fly from Decatur, Illinois to Las Vegas?

Travelers seeking maximum savings on their Decatur, Illinois to Las Vegas flight should consider departing on Wednesday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Las Vegas ranges from 0.1 - 0.8 inches per month. February is typically the wettest month, when rainfall can reach 0.8 in. May is typically the driest time to visit Las Vegas when rainfall is around 0.1 in.

If weather is an important factor for your trip to Las Vegas, 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 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What is the cheapest time of day to fly from DEC to LAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Decatur, Illinois to Las Vegas as you normally would.

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.

$237+ Flights from Decatur, IL to Las Vegas

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Cheap flight deals from Decatur to Las Vegas

Round-trip from	$354 (United Airlines)
One-way from	$237 (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 julio 29, 2025.

jue. 12/119:49 amDEC - LAS

2 stops12h 12mUnited Airlines

mar. 12/1611:59 pmLAS - DEC

1 stop6h 49mUnited Airlines

Deal found 7/28

$354

Best flights from Decatur to Las Vegas
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 julio 29, 2025.

jue. 12/119:49 amDEC - LAS

2 stops12h 12mUnited Airlines

mar. 12/1611:59 pmLAS - DEC

1 stop6h 49mUnited Airlines

Deal found 7/28

$354

Last-minute flights from Decatur to Las Vegas
Discover last-minute flight deals from Decatur to Las Vegas. Data last updated julio 29, 2025 and is based on user searches.

jue. 8/79:45 amDEC - LAS

1 stop8h 55mUnited Airlines

lun. 8/1111:43 pmLAS - DEC

1 stop7h 05mUnited Airlines

Deal found 7/28

$424

vie. 8/296:55 pmDEC - LAS

1 stop28h 53mUnited Airlines

lun. 9/111:59 pmLAS - DEC

1 stop6h 57mUnited Airlines

Deal found 7/27

$385

One-way flights from Decatur to Las Vegas
Search for one-way flight options from Decatur to Las Vegas. Find affordable one-way fares based on user searches. Data last updated julio 29, 2025.

lun. 9/156:55 pmDEC - LAS

1 stop16h 41mUnited Airlines

Deal found 7/27

$237

Fly from

Fly to

Route

Depart

Return

Price

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

jue. 12/11

9:49 am-8:01 pm

2 stops12h 12m

Las Vegas Harry Reid Intl

mar. 12/16

11:59 pm-8:48 am

1 stop6h 49m

$354

DecaturLas Vegas

DEC - LAS

DECLAS

Decatur Arpt

lun. 9/15

6:55 pm-9:36 am

1 stop16h 41m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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

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

8,899 reviews

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

8,899 reviews

United Airlines

7.4

Good

8,899 reviews

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

What is the cheapest airline to fly from Decatur, Illinois to Las Vegas round-trip?
Currently priced at $354, 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

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Other flights to Las Vegas

Top airline flying from Decatur to Las Vegas

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$263	Average$428	FlexibilityNo cancel fee	On-time69%

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$237+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Decatur to Las Vegas with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Decatur to Las Vegas

Round-trip from

One-way from

Find flight deals from Decatur to Las Vegas

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 julio 29, 2025.

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 julio 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Decatur to Las Vegas that are best for you.

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.

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?

Reviews of airlines servicing Las Vegas

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.

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.

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

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

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

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

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

Traveling to a place near Las Vegas?

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Alternative routes for Decatur to Las Vegas

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Top airline flying from Decatur to Las Vegas

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Travel Smart

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 julio 29, 2025.