What are the cheapest airlines to fly from Illinois to Las Vegas one-way?

The cheapest airlines for a one-way flight from Illinois to Las Vegas are Frontier ($54), Allegiant Air ($57), and Spirit Airlines ($58).

What are the most popular routes from Illinois to Las Vegas?

While some choose either Chicago Midway - Las Vegas Harry Reid Intl or Lambert-St Louis - Las Vegas Harry Reid Intl, Chicago O'Hare Intl - Las Vegas Harry Reid Intl is the most popular route from Illinois to Las Vegas.

What are the cheapest flights from Illinois to Las Vegas?

Looking at all options, your cheapest flight can be booked for $44. While the most popular route (Chicago O'Hare Intl - Las Vegas Harry Reid Intl) can be booked for $97 on average our data indicates $708 when flying from Illinois to Las Vegas.

What are the most reliable airlines from Illinois to Las Vegas?

The top 3 most reliable airlines when flying from Illinois to Las Vegas are Southwest (96%), Emirates (88%) and United Airlines (86%).

What are the most popular airlines that fly from Illinois to Las Vegas?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Illinois to Las Vegas.

How far in advance should I book a flight from Illinois to Las Vegas?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 41 days in advance, which can save you up to 43% on flights from Illinois to Las Vegas compared to booking the week you need them. Waiting 41 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $216. For sooner than that we have options available in the next 3 days from $333.

What is the cheapest month to fly from Illinois to Las Vegas?

Flights from Illinois to Las Vegas lean towards being more expensive in March. Prices are generally better when you fly from Illinois to Las Vegas in September, with the cheapest ticket starting at $67.

What airport do you fly into for flights to Las Vegas from Illinois?

Las Vegas Harry Reid Intl (LAS), located 6.2 mi from the city center, is the airport you fly into when you book flights from Illinois to Las Vegas.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Illinois 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.

$54+ Flights from Illinois to Las Vegas

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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.

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Cheap flight deals from Illinois to Las Vegas

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$112 (Kiwi.com)
One-way from	$54 (Cheapflightsfares)
Popular in	March
Cheapest in	September
Average price	$315
Good round-trip deal	$146 or less
Good one-way deal	$75 or less

Provider with most accurate pricing for Chicago (CHI)-Las Vegas Harry Reid Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Chicago (CHI)-Las Vegas Harry Reid Intl flights.

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From Illinois to Las Vegas Harry Reid Intl

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One-way flight from Illinois to Las Vegas Harry Reid Intl

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Illinois to Las Vegas Harry Reid Intl.

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Price to beat on a one-way flight from Illinois to Las Vegas Harry Reid Intl.

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Find flight deals from Illinois to Las Vegas

Cheapest flights from Illinois to Las Vegas
Explore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Fri 4/48:01 pmORD - LAS

Nonstop4h 32mFrontier

Sat 4/1211:22 pmLAS - ORD

Nonstop3h 39mFrontier

Deal found 3/27

$112

Sat 4/198:59 pmMDW - LAS

Nonstop4h 01mFrontier

Thu 4/249:13 amLAS - MDW

Nonstop3h 38mFrontier

Deal found 3/28

$112

Sun 5/48:00 amORD - LAS

Nonstop4h 01mSpirit Airlines

Thu 5/85:15 amLAS - ORD

Nonstop3h 40mSpirit Airlines

Deal found 3/28

$113

Sat 4/127:46 pmORD - LAS

Nonstop4h 31mMultiple Airlines

Tue 4/158:20 amLAS - ORD

Nonstop3h 43mMultiple Airlines

Deal found 3/28

$118

Mon 5/59:55 pmSTL - LAS

Nonstop3h 46mFrontier

Fri 5/93:39 pmLAS - STL

Nonstop3h 26mFrontier

Deal found 3/27

$121

Sun 4/612:22 pmMLI - LAS

Nonstop3h 23mAllegiant Air

Thu 4/106:40 amLAS - MLI

Nonstop3h 12mAllegiant Air

Deal found 3/27

$122

Sun 5/119:36 pmRFD - LAS

Nonstop3h 41mAllegiant Air

Sun 5/186:15 amLAS - RFD

Nonstop3h 23mAllegiant Air

Deal found 3/27

$124

Fri 5/912:40 pmPIA - LAS

Nonstop3h 46mAllegiant Air

Wed 5/212:38 pmLAS - PIA

Nonstop3h 19mAllegiant Air

Deal found 3/27

$142

Thu 4/246:10 pmSTL - LAS

1 stop8h 49mMultiple Airlines

Fri 5/23:39 pmLAS - STL

Nonstop3h 26mMultiple Airlines

Deal found 3/27

$157

Tue 4/296:15 amORD - LAS

Nonstop3h 55mSouthwest

Sat 5/35:55 pmLAS - ORD

Nonstop3h 45mSouthwest

Deal found 3/28

$159

Sat 5/35:05 pmMDW - LAS

Nonstop4h 00mSouthwest

Tue 5/1311:45 pmLAS - MDW

Nonstop3h 35mSouthwest

Deal found 3/27

$159

Wed 4/163:37 pmPIA - LAS

1 stop7h 13mAmerican Airlines

Sat 4/195:00 amLAS - PIA

1 stop8h 03mAmerican Airlines

Deal found 3/26

$209

Best flights from Illinois to Las Vegas
Discover carefully curated flight deals from Illinois to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Mon 4/148:01 pmORD - LAS

Nonstop4h 32mMultiple Airlines

Wed 4/1612:55 amLAS - ORD

Nonstop3h 38mMultiple Airlines

Deal found 3/27

$112

Sat 4/198:59 pmMDW - LAS

Nonstop4h 01mFrontier

Thu 4/249:13 amLAS - MDW

Nonstop3h 38mFrontier

Deal found 3/28

$112

Sun 5/48:00 amORD - LAS

Nonstop4h 01mSpirit Airlines

Thu 5/85:15 amLAS - ORD

Nonstop3h 40mSpirit Airlines

Deal found 3/28

$113

Sun 5/119:36 pmRFD - LAS

Nonstop3h 41mAllegiant Air

Sun 5/186:15 amLAS - RFD

Nonstop3h 23mAllegiant Air

Deal found 3/27

$124

Tue 4/296:15 amORD - LAS

Nonstop3h 55mSouthwest

Sat 5/35:55 pmLAS - ORD

Nonstop3h 45mSouthwest

Deal found 3/28

$159

Mon 5/127:00 amORD - LAS

Nonstop3h 59mAmerican Airlines

Wed 5/141:19 pmLAS - ORD

Nonstop3h 53mAmerican Airlines

Deal found 3/27

$192

Wed 6/412:56 pmORD - LAS

Nonstop4h 01mUnited Airlines

Fri 6/1312:49 amLAS - ORD

Nonstop3h 41mUnited Airlines

Deal found 3/27

$213

Tue 4/155:05 pmMLI - LAS

1 stop8h 15mDelta

Sat 4/196:00 amLAS - MLI

1 stop8h 20mDelta

Deal found 3/25

$217

Sat 4/197:46 pmORD - LAS

Nonstop4h 31mFrontier

Mon 4/2111:28 pmLAS - ORD

Nonstop3h 40mFrontier

Deal found 3/27

$114

Thu 5/158:05 pmORD - LAS

1 stop13h 28mSun Country Air

Mon 5/198:45 amLAS - ORD

1 stop8h 24mSun Country Air

Deal found 3/27

$250

Mon 5/59:55 pmSTL - LAS

Nonstop3h 46mFrontier

Fri 5/93:39 pmLAS - STL

Nonstop3h 26mFrontier

Deal found 3/27

$121

Sun 4/2012:42 pmMLI - LAS

Nonstop3h 23mAllegiant Air

Thu 4/246:40 amLAS - MLI

Nonstop3h 12mAllegiant Air

Deal found 3/27

$141

Last-minute flights from Illinois to Las Vegas
Discover last-minute flight deals from Illinois to Las Vegas. Data last updated March 28, 2025 and is based on user searches.

Thu 4/39:41 pmRFD - LAS

Nonstop3h 41mAllegiant Air

Thu 4/103:19 pmLAS - RFD

Nonstop3h 27mAllegiant Air

Deal found 3/27

$155

Fri 4/48:01 pmORD - LAS

Nonstop4h 32mFrontier

Sat 4/1211:22 pmLAS - ORD

Nonstop3h 39mFrontier

Deal found 3/27

$112

Sat 4/57:46 pmORD - LAS

Nonstop4h 31mMultiple Airlines

Wed 4/912:55 amLAS - ORD

Nonstop3h 38mMultiple Airlines

Deal found 3/28

$121

Sat 4/56:33 pmSTL - LAS

Nonstop3h 52mFrontier

Sat 4/1212:22 pmLAS - STL

Nonstop3h 21mFrontier

Deal found 3/27

$122

Sat 4/58:59 pmMDW - LAS

Nonstop4h 01mFrontier

Sat 4/1211:59 pmLAS - MDW

Nonstop3h 34mFrontier

Deal found 3/27

$168

Sat 4/52:10 pmMDW - LAS

2 stops7h 20mSouthwest

Sat 4/125:50 amLAS - MDW

Nonstop3h 30mSouthwest

Deal found 3/27

$328

Sat 4/56:51 pmSTL - LAS

1 stop6h 58mMultiple Airlines

Sat 4/126:35 pmLAS - STL

1 stop23h 03mMultiple Airlines

Deal found 3/27

$329

Sat 4/51:12 pmMDW - LAS

1 stop8h 36mDelta

Fri 4/1112:55 amLAS - MDW

1 stop7h 47mDelta

Deal found 3/28

$333

Sun 4/612:22 pmMLI - LAS

Nonstop3h 23mAllegiant Air

Thu 4/106:40 amLAS - MLI

Nonstop3h 12mAllegiant Air

Deal found 3/27

$122

Sun 4/68:00 amORD - LAS

Nonstop4h 16mSpirit Airlines

Thu 4/1012:55 amLAS - ORD

Nonstop3h 38mSpirit Airlines

Deal found 3/27

$163

Sun 4/68:42 amRFD - LAS

3 stops40h 23mMultiple Airlines

Thu 4/103:19 pmLAS - RFD

Nonstop3h 27mMultiple Airlines

Deal found 3/26

$305

Sun 4/62:49 pmMLI - LAS

3 stops34h 51mMultiple Airlines

Thu 4/106:40 amLAS - MLI

Nonstop3h 12mMultiple Airlines

Deal found 3/27

$315

One-way flights from Illinois to Las Vegas
Search for one-way flight options from Illinois to Las Vegas. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Mon 4/218:01 pmORD - LAS

Nonstop4h 32mFrontier

Deal found 3/27

$54

Sun 4/208:50 pmMDW - LAS

Nonstop4h 01mFrontier

Deal found 3/26

$55

Sun 4/69:41 pmRFD - LAS

Nonstop3h 41mAllegiant Air

Deal found 3/27

$57

Wed 4/2310:26 pmORD - LAS

1 stop15h 14mSpirit Airlines

Deal found 3/27

$58

Mon 4/289:55 pmSTL - LAS

Nonstop3h 44mFrontier

Deal found 3/27

$61

Sun 4/2012:42 pmMLI - LAS

Nonstop3h 23mAllegiant Air

Deal found 3/27

$71

Mon 4/2812:40 pmPIA - LAS

Nonstop3h 46mAllegiant Air

Deal found 3/26

$80

Tue 5/201:45 pmORD - LAS

Nonstop4h 12mUnited Airlines

Deal found 3/27

$80

Sat 4/268:30 pmMDW - LAS

Nonstop4h 00mSouthwest

Deal found 3/27

$80

Tue 4/226:45 pmORD - LAS

Nonstop4h 13mAmerican Airlines

Deal found 3/27

$90

Thu 4/246:10 pmSTL - LAS

1 stop8h 49mSpirit Airlines

Deal found 3/27

$94

Fri 4/49:28 pmRFD - LAS

1 stop21h 47mMultiple Airlines

Deal found 3/27

$99

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 4/4

8:01 pm-10:33 pm

Nonstop4h 32m

Las Vegas Harry Reid Intl

Sat 4/12

11:22 pm-5:01 am

Nonstop3h 39m

$112

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sat 4/19

8:59 pm-11:00 pm

Nonstop4h 01m

Las Vegas Harry Reid Intl

Thu 4/24

9:13 am-2:51 pm

Nonstop3h 38m

$112

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 5/4

8:00 am-10:01 am

Nonstop4h 01m

Las Vegas Harry Reid Intl

Thu 5/8

5:15 am-10:55 am

Nonstop3h 40m

$113

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sat 4/12

7:46 pm-10:17 pm

Nonstop4h 31m

Las Vegas Harry Reid Intl

Tue 4/15

8:20 am-2:03 pm

Nonstop3h 43m

$118

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/5

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Fri 5/9

3:39 pm-9:05 pm

Nonstop3h 26m

$121

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 5/11

9:36 pm-11:17 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Sun 5/18

6:15 am-11:38 am

Nonstop3h 23m

$124

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

Sun 4/20

12:42 pm-2:05 pm

Nonstop3h 23m

Las Vegas Harry Reid Intl

Thu 4/24

6:40 am-11:52 am

Nonstop3h 12m

$141

PeoriaLas Vegas

PIA - LAS

PIALAS

Greater Peoria

Fri 5/9

12:40 pm-2:26 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Wed 5/21

2:38 pm-7:57 pm

Nonstop3h 19m

$142

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 4/24

6:10 pm-12:59 am

1 stop8h 49m

Las Vegas Harry Reid Intl

Fri 5/2

3:39 pm-9:05 pm

Nonstop3h 26m

$157

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 4/29

6:15 am-8:10 am

Nonstop3h 55m

Las Vegas Harry Reid Intl

Sat 5/3

5:55 pm-11:40 pm

Nonstop3h 45m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 results

...

Best time to book a flight from Illinois to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Illinois 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 Illinois to Las Vegas

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Las Vegas (average of $198). Flying from 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.

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

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

Weekly flight availability from Illinois to Las Vegas

The most flights from USIL to LAS are scheduled on a Thursday (39 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Las Vegas by month

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.

Temperature in Las Vegas by month

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).

Reviews of airlines servicing Las Vegas

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Illinois to Las Vegas. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines

8.0

Very good

9,798 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,896 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Hawaiian Airlines

7.9

Good

2,336 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airport do you fly into for flights to Las Vegas from Illinois?
Las Vegas Harry Reid Intl (LAS), located 6.2 mi from the city center, is the airport you fly into when you book flights from Illinois to Las Vegas.
What are the cheapest airlines to fly from Illinois to Las Vegas one-way?
The cheapest airlines for a one-way flight from Illinois to Las Vegas are Frontier ($54), Allegiant Air ($57), and Spirit Airlines ($58).
What are the most popular routes from Illinois to Las Vegas?
While some choose either Chicago Midway - Las Vegas Harry Reid Intl or Lambert-St Louis - Las Vegas Harry Reid Intl, Chicago O'Hare Intl - Las Vegas Harry Reid Intl is the most popular route from Illinois to Las Vegas.
What are the most reliable airlines from Illinois to Las Vegas?
The top 3 most reliable airlines when flying from Illinois to Las Vegas are Southwest (96%), Emirates (88%) and United Airlines (86%).
What are the cheapest flights from Illinois to Las Vegas?
Looking at all options, your cheapest flight can be booked for $44. While the most popular route (Chicago O'Hare Intl - Las Vegas Harry Reid Intl) can be booked for $97 on average our data indicates $708 when flying from Illinois to Las Vegas.
Can I find deals for flights from Illinois to Las Vegas that include hotel bookings?
Yes. In addition to deals on Illinois to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Las Vegas?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Las Vegas.
Can I find deals for business class flights from Illinois to Las Vegas?
Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Las Vegas?
Currently, August is the cheapest month in which you can book a flight from Illinois to Las Vegas (average of $198). Flying from 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

Henderson

Paradise

North Las Vegas

Sunrise Manor

Winchester

Kingman

Primm

Mesquite

Needles

Mount Charleston

Pahrump

Boulder City

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Top 9 airlines flying from Illinois to Las Vegas

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$52	Average$195	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$81	Average$206	FlexibilityNo cancel fee	On-time65%
Allegiant Air	Cheapest$110	Average$236	FlexibilityNo cancel fee	On-time88%
Delta	Cheapest$132	Average$400	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$149	Average$434	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$161	Average$454	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$189	Average$378	FlexibilityNo cancel fee	On-time63%
Sun Country Air	Cheapest$193	Average$310	FlexibilityNo cancel fee	On-time83%
Alaska Airlines	Cheapest$240	Average$359	FlexibilityNo cancel fee	On-time75%

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$54+ Cheap flights from Illinois to Las Vegas (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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Las Vegas with Cheapflights

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Cheap flight deals from Illinois to Las Vegas

Keep the following information in mind while searching for Illinois to Las Vegas flight deals. Data was last updated March 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Las Vegas

Cheapest flights from Illinois to Las VegasExplore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Explore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Illinois to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Illinois with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Las Vegas

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

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

Find hourly flight availability from Illinois to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

Weekly flight availability from Illinois to Las Vegas

Explore weekly flight availability from Illinois to Las Vegas. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 28, 2025.

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

Reviews of airlines servicing Las Vegas

Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Illinois to Las Vegas. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 airport do you fly into for flights to Las Vegas from Illinois?

What are the cheapest airlines to fly from Illinois to Las Vegas one-way?

What are the most popular routes from Illinois to Las Vegas?

What are the most reliable airlines from Illinois to Las Vegas?

What are the cheapest flights from Illinois to Las Vegas?

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

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

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

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

Traveling to a place near Illinois?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Las Vegas

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Illinois to Las Vegas

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Cheapest flights from Illinois to Las Vegas
Explore the most affordable flight options available from Illinois to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.