Las Vegas

$52+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — LAS
ene. 26 — feb. 21
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Cheap flight deals from Illinois to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 enero 21, 2025.

Round-trip from

$105
(Cheapflightsfares)

One-way from

$52
(Kiwi.com)

Good round-trip deal

$146 or less

Good one-way deal

$76 or less
From Illinois to Las Vegas Harry Reid Intl
One-way flight from Illinois to Las Vegas Harry Reid Intl
Price to beat on a round-trip flight from Illinois to Las Vegas Harry Reid Intl.
Price to beat on a one-way flight from Illinois to Las Vegas Harry Reid Intl.

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 enero 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/227:59 pmORD - LAS
Nonstop4h 16mFrontier
mar. 2/257:31 pmLAS - ORD
1 stop15h 54mFrontier
Deal found 1/21$105
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/267:05 amMDW - LAS
1 stop6h 04mFrontier
sáb. 3/111:59 pmLAS - MDW
Nonstop3h 32mFrontier
Deal found 1/21$105
This FlightHub deal was found by Cheapflights users on 1/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/103:56 pmORD - LAS
1 stop8h 29mMultiple Airlines
mié. 2/124:08 pmLAS - ORD
Nonstop3h 42mMultiple Airlines
Deal found 1/21$108
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/910:07 pmMLI - LAS
Nonstop3h 37mAllegiant Air
jue. 2/137:00 amLAS - MLI
Nonstop3h 07mAllegiant Air
Deal found 1/21$110
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/710:47 pmORD - LAS
Nonstop4h 07mSpirit Airlines
mié. 2/124:08 pmLAS - ORD
Nonstop3h 42mSpirit Airlines
Deal found 1/20$116
This Cheapflightsfares deal was found by Cheapflights users on 1/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/196:43 pmSTL - LAS
Nonstop3h 41mFrontier
vie. 2/219:48 pmLAS - STL
1 stop9h 28mFrontier
Deal found 1/21$136
This United Airlines deal was found by Cheapflights users on 1/20. 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.
sáb. 3/17:46 pmORD - LAS
Nonstop4h 18mUnited Airlines
mar. 3/48:00 amLAS - ORD
Nonstop3h 40mUnited Airlines
Deal found 1/20$139
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/39:14 pmPIA - LAS
Nonstop3h 56mAllegiant Air
vie. 2/77:35 amLAS - PIA
Nonstop3h 19mAllegiant Air
Deal found 1/20$151
This Gotogate deal was found by Cheapflights users on 1/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/99:37 pmRFD - LAS
Nonstop4h 02mAllegiant Air
jue. 3/133:28 pmLAS - RFD
Nonstop3h 19mAllegiant Air
Deal found 1/21$156
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/77:09 pmSTL - LAS
1 stop23h 46mMultiple Airlines
lun. 2/1010:27 pmLAS - STL
1 stop14h 16mMultiple Airlines
Deal found 1/20$174
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/88:45 pmORD - LAS
Nonstop4h 11mAmerican Airlines
mar. 2/117:00 amLAS - ORD
Nonstop3h 37mAmerican Airlines
Deal found 1/20$184
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/54:33 pmMLI - LAS
1 stop8h 24mAmerican Airlines
sáb. 2/812:08 pmLAS - MLI
1 stop8h 14mAmerican Airlines
Deal found 1/20$209

Find flights from Illinois to Las Vegas within your budget

Customize your flight search to find flights from Illinois 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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

sáb. 2/22

7:59 pm-10:15 pm

Nonstop4h 16m

Las Vegas Harry Reid Intl

mar. 2/25

7:31 pm-1:25 pm

1 stop15h 54m

$105

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

mié. 2/26

7:05 am-11:09 am

1 stop6h 04m

Las Vegas Harry Reid Intl

sáb. 3/1

11:59 pm-5:31 am

Nonstop3h 32m

$105

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

lun. 2/10

3:56 pm-10:25 pm

1 stop8h 29m

Las Vegas Harry Reid Intl

mié. 2/12

4:08 pm-9:50 pm

Nonstop3h 42m

$108

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

dom. 2/9

10:07 pm-11:44 pm

Nonstop3h 37m

Las Vegas Harry Reid Intl

jue. 2/13

7:00 am-12:07 pm

Nonstop3h 07m

$110

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

sáb. 3/1

4:30 pm-6:45 pm

Nonstop4h 15m

Las Vegas Harry Reid Intl

dom. 3/2

12:30 am-6:07 am

Nonstop3h 37m

$115

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

mié. 2/19

6:43 pm-8:24 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

vie. 2/21

9:48 pm-9:16 am

1 stop9h 28m

$136

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

sáb. 3/1

7:46 pm-10:04 pm

Nonstop4h 18m

Las Vegas Harry Reid Intl

mar. 3/4

8:00 am-1:40 pm

Nonstop3h 40m

$139

PeoriaLas Vegas

PIA - LAS

PIALAS

Greater Peoria

lun. 2/3

9:14 pm-11:10 pm

Nonstop3h 56m

Las Vegas Harry Reid Intl

vie. 2/7

7:35 am-12:54 pm

Nonstop3h 19m

$151

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

dom. 3/9

9:37 pm-11:39 pm

Nonstop4h 02m

Las Vegas Harry Reid Intl

jue. 3/13

3:28 pm-8:47 pm

Nonstop3h 19m

$156

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 3/3

11:08 pm-12:57 am

Nonstop3h 49m

Las Vegas Harry Reid Intl

vie. 3/7

10:41 pm-9:04 am

1 stop8h 23m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 60 results
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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.

Travel insights for flights from Illinois to Las Vegas

Get recent, data-driven insights about flights from Illinois to Las Vegas including ideal travel times, pricing trends, and more.

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?

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 enero 21, 2025.

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

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 enero 21, 2025.

The most flights from USIL to LAS are scheduled on a Monday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Las Vegas by month

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

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

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 enero 21, 2025.
Read reviews from past customers who have flown Spirit Airlines, American Airlines and Frontier from Illinois to Las Vegas. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,662 reviews
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,706 reviews
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,521 reviews
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
8,984 reviews
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
801 reviews
8.1
Very good
4,662 reviews

Food

7.2

Comfort

8.1

Crew

8.7

Boarding

8.2

Entertainment

7.7

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    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 Spirit Airlines ($52), Frontier ($52), and Allegiant Air ($60).

  • What are the most popular routes 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 Austrian Airlines (91%), Southwest (88%) and Brussels Airlines (88%).

  • What are the cheapest flights from Illinois to Las Vegas?

    Looking at all options, your cheapest flight can be booked for $55. While the most popular route (Chicago O'Hare Intl - Las Vegas Harry Reid Intl) can be booked for $91 on average our data indicates $755 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

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Henderson
Paradise
Sunrise Manor
North Las Vegas
Kingman
Winchester
Primm
Mesquite
Needles
Mount Charleston
Pahrump

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

Discover the top 9 airlines that operate flights from Illinois 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$211FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$70Average$212FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$111Average$234FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$172Average$473FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$185Average$439FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$186Average$366FlexibilityNo cancel feeOn-time63%
Sun Country AirCheapest$191Average$300FlexibilityNo cancel feeOn-time83%
DeltaCheapest$216Average$414FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$240Average$303FlexibilityNo cancel feeOn-time75%
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