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$74+ Cheap flights from Las Vegas (LAS) to Illinois

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ORD
oct. 25 — nov. 11
sáb. 10/25
sáb. 11/1
1 adult, Economy
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Cheap flight deals from Las Vegas to Illinois

Keep the following information in mind while searching for Las Vegas to Illinois flight deals. Data was last updated septiembre 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$110
(Cheapflightsfares)

One-way from

$74
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$159

Good round-trip deal

$116 or less

Good one-way deal

$136 or less
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Chicago (CHI) flights.
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From Las Vegas Harry Reid Intl to Illinois
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One-way flight from Las Vegas Harry Reid Intl to Illinois
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Highest demand for flights based on searches. 10% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Illinois.
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Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Illinois.
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Find flight deals from Las Vegas to Illinois

Cheapest flights from Las Vegas to Illinois
Explore the most affordable flight options available from Las Vegas to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/96:25 amLAS - MLI
Nonstop3h 13mAllegiant Air
dom. 10/1212:28 pmMLI - LAS
Nonstop3h 31mAllegiant Air
Deal found 9/23$110
This Kiwi.com deal was found by Cheapflights users on 9/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/263:50 pmLAS - ORD
Nonstop3h 42mSpirit Airlines
lun. 9/296:15 amORD - LAS
Nonstop4h 00mSpirit Airlines
Deal found 9/22$111
This CheapOair deal was found by Cheapflights users on 9/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/256:00 amLAS - ORD
Nonstop3h 48mFrontier
lun. 9/299:54 pmORD - LAS
Nonstop4h 11mFrontier
Deal found 9/22$112
This Cheapflightsfares deal was found by Cheapflights users on 9/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/313:45 pmLAS - ORD
Nonstop3h 58mFrontier
dom. 11/210:43 pmORD - LAS
Nonstop4h 01mFrontier
Deal found 9/23$113
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/242:54 pmLAS - ORD
Nonstop4h 00mFrontier
lun. 10/279:54 pmORD - LAS
Nonstop4h 05mFrontier
Deal found 9/24$114
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/32:57 pmLAS - ORD
Nonstop4h 02mFrontier
lun. 10/610:42 amORD - LAS
1 stop7h 59mFrontier
Deal found 9/24$115
This Gotogate deal was found by Cheapflights users on 9/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/32:57 pmLAS - ORD
Nonstop4h 02mFrontier
dom. 10/126:50 amORD - LAS
1 stop27h 12mFrontier
Deal found 9/25$116
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/106:30 pmLAS - ORD
Nonstop3h 47mSpirit Airlines
lun. 10/136:35 amORD - LAS
Nonstop3h 54mSpirit Airlines
Deal found 9/24$118
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/242:54 pmLAS - ORD
Nonstop4h 00mFrontier
dom. 10/269:54 pmORD - LAS
Nonstop4h 05mFrontier
Deal found 9/25$119
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/33:54 pmLAS - ORD
Nonstop3h 42mSpirit Airlines
dom. 10/56:40 amORD - LAS
Nonstop3h 54mSpirit Airlines
Deal found 9/24$120
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/106:30 pmLAS - ORD
Nonstop3h 47mSpirit Airlines
mar. 10/146:40 amORD - LAS
Nonstop3h 54mSpirit Airlines
Deal found 9/24$121
This Cheapflightsfares deal was found by Cheapflights users on 9/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/106:30 pmLAS - ORD
Nonstop3h 47mSpirit Airlines
dom. 10/126:40 amORD - LAS
Nonstop3h 54mSpirit Airlines
Deal found 9/23$122

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to Illinois 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 septiembre 25, 2025.
Use the filters below to find and compare flights from Las Vegas to Illinois that are best for you.

Fly from

Las Vegas

Fly to

Illinois

Route

Depart

Return

Price

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

jue. 10/9

6:25 am-11:38 am

Nonstop3h 13m

Moline Quad-City

dom. 10/12

12:28 pm-1:59 pm

Nonstop3h 31m

$116

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

jue. 12/11

12:50 am-6:25 am

Nonstop3h 35m

Chicago O'Hare Intl

dom. 12/14

3:53 pm-6:03 pm

Nonstop4h 10m

$129

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

sáb. 10/25

6:30 pm-12:17 am

Nonstop3h 47m

Chicago O'Hare Intl

mié. 10/29

6:35 am-8:29 am

Nonstop3h 54m

$137

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

vie. 10/10

6:20 am-11:43 am

Nonstop3h 23m

Lambert-St Louis

mar. 10/14

7:52 pm-11:29 pm

1 stop5h 37m

$139

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

lun. 9/29

12:59 am-9:06 am

1 stop6h 07m

Lambert-St Louis

mar. 10/21

7:52 pm-11:29 pm

1 stop5h 37m

$143

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

lun. 10/27

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

lun. 11/3

7:45 pm-11:29 pm

1 stop5h 44m

$144

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

mar. 10/7

12:59 am-9:07 am

1 stop6h 08m

Lambert-St Louis

mar. 10/28

8:40 pm-1:13 pm

1 stop18h 33m

$144

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

vie. 10/3

12:59 am-9:06 am

1 stop6h 07m

Lambert-St Louis

lun. 10/13

9:06 pm-9:27 am

1 stop14h 21m

$144

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

mié. 10/15

3:00 pm-8:48 pm

Nonstop3h 48m

Chicago O'Hare Intl

mar. 10/28

6:40 am-8:34 am

Nonstop3h 54m

$145

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

jue. 11/6

6:20 am-11:33 am

Nonstop3h 13m

Moline Quad-City

dom. 11/9

12:23 pm-1:59 pm

Nonstop3h 36m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/25

Showing 1-10 of 60 results
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Best time to book a flight from Las Vegas to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from Las Vegas to Illinois (average of $245). Flying from Las Vegas to Illinois in March is currently the most expensive (average of $321). 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 LAS to IL?

Find hourly flight availability from Las Vegas to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 25, 2025.

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

Weekly flight availability from Las Vegas to Illinois

Explore weekly flight availability from Las Vegas to Illinois. 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 septiembre 25, 2025.

The most flights from LAS to USIL are scheduled on a Thursday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated septiembre 25, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Las Vegas to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,246 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,045 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Frontier
5.8
Fair
3,162 reviews
Southwest
8.0
Very good
4,246 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Illinois. 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 from for flights from Las Vegas to Illinois?

    For a flight from Las Vegas to Illinois, you will be flying from Harry Reid Intl. Las Vegas Harry Reid Intl (LAS) is just 6.2 mi from the center of the city.

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

    Allegiant Air, Spirit Airlines, and Frontier can get you from Las Vegas to Illinois in just under 3h 13m. Your travel time will be generally consistent. There are 1372 mi between Las Vegas and Illinois. Generally, flights for this route are nonstop.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $77. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Las Vegas to Illinois for a low price.

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

    Most travelers choose Las Vegas Harry Reid Intl - Chicago O'Hare Intl, Las Vegas Harry Reid Intl - Chicago Midway or Las Vegas Harry Reid Intl - Moline Quad-City when deciding on the best route from Las Vegas to Illinois.

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

    Consider ITA Airways (100%), Austrian Airlines (96%) or Avianca (93%) when booking your flight. These represent the most reliable airlines when flying from Las Vegas to Illinois.

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

    While on average a flight from Las Vegas to Illinois is generally $876, our data shows the cheapest flight currently is $63. When looking at the most popular route, (Las Vegas Harry Reid Intl - Chicago O'Hare Intl), you can expect to pay $99 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Las Vegas to Illinois 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 Las Vegas to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Las Vegas to Illinois (average of $245). Flying from Las Vegas to Illinois in March is currently the most expensive (average of $321). 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.

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Alternative routes for Las Vegas to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Las Vegas to Illinois

Discover the top 7 airlines that operate flights from Las Vegas to Illinois. 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 septiembre 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$67Average$167FlexibilityNo cancel feeOn-time65%
FrontierCheapest$79Average$216FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$91Average$175FlexibilityNo cancel feeOn-time88%
DeltaCheapest$118Average$386FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$158Average$397FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$329FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$159Average$286FlexibilityNo cancel feeOn-time63%

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