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$54+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$102
(Mytrip)

One-way from

$54
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$178

Good round-trip deal

$242 or less

Good one-way deal

$98 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. 14% potential increase in price ($31 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 February 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 February 20, 2025.

This Expedia deal was found by Cheapflights users on 2/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2212:55 amLAS - ORD
Nonstop3h 38mSpirit Airlines
Wed 4/309:04 pmORD - LAS
1 stop11h 58mSpirit Airlines
Deal found 2/20$102
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Fri 3/211:01 amLAS - ORD
Nonstop3h 41mMultiple Airlines
Sat 3/297:59 pmORD - LAS
Nonstop4h 16mMultiple Airlines
Deal found 2/20$103
This Frontier deal was found by Cheapflights users on 2/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/211:49 pmLAS - MDW
Nonstop3h 34mFrontier
Sat 4/57:39 amMDW - LAS
1 stop9h 12mFrontier
Deal found 2/20$104
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Mon 4/711:28 pmLAS - ORD
Nonstop3h 40mFrontier
Mon 4/147:30 amORD - LAS
1 stop11h 12mFrontier
Deal found 2/20$105
This Kiwi.com deal was found by Cheapflights users on 2/19. 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.
Thu 3/612:22 pmLAS - STL
Nonstop3h 23mFrontier
Mon 3/106:55 pmSTL - LAS
Nonstop3h 41mFrontier
Deal found 2/19$111
This Booking.com deal was found by Cheapflights users on 2/19. 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.
Thu 4/33:24 pmLAS - RFD
Nonstop3h 27mAllegiant Air
Sun 4/69:41 pmRFD - LAS
Nonstop3h 41mAllegiant Air
Deal found 2/19$134
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Thu 4/106:40 amLAS - MLI
Nonstop3h 12mAllegiant Air
Sun 4/1312:42 pmMLI - LAS
Nonstop3h 23mAllegiant Air
Deal found 2/20$146
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Fri 4/116:30 amLAS - PIA
Nonstop3h 20mAllegiant Air
Mon 4/2812:40 pmPIA - LAS
Nonstop3h 46mAllegiant Air
Deal found 2/20$170
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Fri 4/1112:59 amLAS - PIA
1 stop7h 19mAmerican Airlines
Tue 4/153:37 pmPIA - LAS
2 stops9h 01mAmerican Airlines
Deal found 2/20$214
This CheapOair deal was found by Cheapflights users on 2/19. 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.
Wed 4/1610:15 pmLAS - STL
1 stop17h 01mSpirit Airlines
Tue 4/226:11 pmSTL - LAS
1 stop8h 48mSpirit Airlines
Deal found 2/19$217
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Fri 4/116:30 amLAS - PIA
Nonstop3h 20mMultiple Airlines
Mon 4/289:07 pmPIA - LAS
1 stop26h 35mMultiple Airlines
Deal found 2/20$227
This Southwest deal was found by Cheapflights users on 2/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/15:30 pmLAS - MDW
1 stop5h 35mSouthwest
Tue 5/63:25 pmMDW - LAS
Nonstop3h 55mSouthwest
Deal found 2/19$228

Find flights from Las Vegas to Illinois within your budget

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 February 20, 2025.

Fly from

Las Vegas

Fly to

Illinois

Route

Depart

Return

Price

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Tue 4/22

12:55 am-6:33 am

Nonstop3h 38m

Chicago O'Hare Intl

Wed 4/30

9:45 am-7:50 pm

1 stop12h 05m

$102

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 3/21

1:01 am-6:42 am

Nonstop3h 41m

Chicago O'Hare Intl

Sat 3/29

7:59 pm-10:15 pm

Nonstop4h 16m

$103

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Wed 4/2

11:49 pm-5:23 am

Nonstop3h 34m

Chicago Midway

Sat 4/5

7:39 am-2:51 pm

1 stop9h 12m

$104

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Sat 4/12

11:15 am-11:56 pm

1 stop10h 41m

Chicago O'Hare Intl

Mon 4/14

7:30 am-4:42 pm

1 stop11h 12m

$109

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 3/6

12:22 pm-5:45 pm

Nonstop3h 23m

Lambert-St Louis

Mon 3/10

6:55 pm-8:36 pm

Nonstop3h 41m

$111

Las VegasChicago

LAS - RFD

LASRFD

Las Vegas Harry Reid Intl

Thu 4/3

3:24 pm-8:51 pm

Nonstop3h 27m

Chicago Greater Rockford

Sun 4/6

9:41 pm-11:22 pm

Nonstop3h 41m

$134

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Thu 4/10

6:40 am-11:52 am

Nonstop3h 12m

Moline Quad-City

Sun 4/13

12:42 pm-2:05 pm

Nonstop3h 23m

$140

Las VegasPeoria

LAS - PIA

LASPIA

Las Vegas Harry Reid Intl

Fri 4/11

6:30 am-11:50 am

Nonstop3h 20m

Greater Peoria

Mon 4/28

12:40 pm-2:26 pm

Nonstop3h 46m

$170

Las VegasPeoria

LAS - PIA

LASPIA

Las Vegas Harry Reid Intl

Fri 4/11

12:59 am-10:18 am

1 stop7h 19m

Greater Peoria

Tue 4/15

3:37 pm-10:38 pm

2 stops9h 01m

$214

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Wed 4/16

10:15 pm-5:16 pm

1 stop17h 01m

Lambert-St Louis

Tue 4/22

6:11 pm-12:59 am

1 stop8h 48m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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.

Travel insights for flights from Las Vegas to Illinois

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

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 February 20, 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 February 20, 2025.

The most flights from LAS to USIL are scheduled on a Thursday (36 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Breeze Airways and Alaska Airlines from Las Vegas to Illinois 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.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Breeze Airways
8.1
Very good
150 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

  • 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 $54. However, be on the lookout for offers from Spirit Airlines and United Airlines, 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 - Lambert-St Louis when deciding on the best route from Las Vegas to Illinois.

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

    Consider Austrian Airlines (95%), Royal Jordanian (94%) or Emirates (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 $941, our data shows the cheapest flight currently is $74. When looking at the most popular route, (Las Vegas Harry Reid Intl - Chicago O'Hare Intl), you can expect to pay $81 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$55Average$153FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$70Average$184FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$128Average$209FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$147Average$389FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$159Average$409FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$188Average$329FlexibilityNo cancel feeOn-time63%
DeltaCheapest$257Average$473FlexibilityNo cancel feeOn-timeN/A
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