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$55+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — ORD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Las Vegas to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Las Vegas (LAS) to Illinois (USIL). 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 December 18, 2024.

Round-trip from

$98
(Flightnetwork)

One-way from

$55
(Frontier)
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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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 December 18, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Tue 12/2411:58 pmLAS - ORD
Nonstop3h 32mSpirit Airlines
Sun 1/59:54 pmORD - LAS
Nonstop4h 05mSpirit Airlines
Deal found 12/18$178
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/316:52 pmLAS - ORD
1 stop11h 45mMultiple Airlines
Wed 1/110:22 pmORD - LAS
1 stop13h 54mMultiple Airlines
Deal found 12/17$179
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Tue 12/247:08 pmLAS - ORD
1 stop26h 38mFrontier
Sun 1/58:34 pmORD - LAS
Nonstop4h 28mFrontier
Deal found 12/18$197
This Frontier deal was found by Cheapflights users on 12/17. 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.
Sun 12/2911:59 pmLAS - MDW
Nonstop3h 34mFrontier
Sat 1/46:25 amMDW - LAS
1 stop9h 49mFrontier
Deal found 12/17$234
This Gotogate deal was found by Cheapflights users on 12/17. 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.
Thu 12/266:25 amLAS - RFD
Nonstop3h 25mAllegiant Air
Thu 1/212:40 pmRFD - LAS
Nonstop3h 52mAllegiant Air
Deal found 12/17$262
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Thu 12/266:25 amLAS - STL
1 stop23h 48mFrontier
Wed 1/16:49 pmSTL - LAS
1 stop16h 16mFrontier
Deal found 12/18$264
This CheapOair deal was found by Cheapflights users on 12/17. 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.
Mon 12/3012:20 pmLAS - STL
1 stop25h 01mMultiple Airlines
Sat 1/46:49 pmSTL - LAS
1 stop6h 45mMultiple Airlines
Deal found 12/17$401
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/2312:59 amLAS - STL
1 stop7h 46mAmerican Airlines
Tue 12/317:24 amSTL - LAS
1 stop5h 58mAmerican Airlines
Deal found 12/17$408
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Wed 12/252:10 pmLAS - ORD
Nonstop3h 46mUnited Airlines
Wed 1/17:10 amORD - LAS
1 stop8h 47mUnited Airlines
Deal found 12/18$486
This Southwest deal was found by Cheapflights users on 12/16. 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.
Sat 12/283:45 pmLAS - MDW
Nonstop3h 30mSouthwest
Tue 1/78:40 pmMDW - LAS
Nonstop4h 10mSouthwest
Deal found 12/16$519
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2111:40 pmLAS - MDW
1 stop7h 43mDelta
Tue 12/3111:48 amMDW - LAS
1 stop7h 50mDelta
Deal found 12/17$631
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:25 amLAS - STL
1 stop4h 55mDelta
Tue 12/2411:46 amSTL - LAS
1 stop7h 52mDelta
Deal found 12/16$642

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Thu 1/23

10:29 pm-12:32 am

1 stop24h 03m

Chicago O'Hare Intl

Thu 1/30

6:36 pm-9:03 pm

Nonstop4h 27m

$98

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 1/17

10:41 pm-5:55 am

1 stop29h 14m

Chicago O'Hare Intl

Sun 1/19

1:39 pm-3:45 pm

Nonstop4h 06m

$99

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Wed 1/8

5:25 pm-10:57 pm

Nonstop3h 32m

Chicago O'Hare Intl

Mon 1/20

3:56 pm-10:25 pm

1 stop8h 29m

$108

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Thu 1/23

12:21 pm-8:53 pm

1 stop6h 32m

Chicago Midway

Thu 1/30

2:56 pm-10:25 pm

1 stop9h 29m

$108

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 1/16

8:18 pm-9:16 am

1 stop10h 58m

Lambert-St Louis

Mon 1/20

7:09 pm-11:51 pm

1 stop6h 42m

$108

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Thu 1/23

3:58 pm-9:17 pm

Nonstop3h 19m

Moline Quad-City

Sun 1/26

10:07 pm-11:44 pm

Nonstop3h 37m

$120

Las VegasPeoria

LAS - PIA

LASPIA

Las Vegas Harry Reid Intl

Fri 1/10

7:35 am-12:54 pm

Nonstop3h 19m

Greater Peoria

Mon 1/20

9:14 pm-11:10 pm

Nonstop3h 56m

$154

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Mon 1/6

12:55 am-6:32 am

Nonstop3h 37m

Chicago O'Hare Intl

Wed 1/8

2:20 pm-4:28 pm

Nonstop4h 08m

$159

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Tue 1/7

7:30 am-1:00 pm

Nonstop3h 30m

Chicago Midway

Wed 1/8

5:25 pm-7:35 pm

Nonstop4h 10m

$160

Las VegasChicago

LAS - RFD

LASRFD

Las Vegas Harry Reid Intl

Thu 1/30

6:30 am-11:54 am

Nonstop3h 24m

Chicago Greater Rockford

Thu 2/6

12:44 pm-2:33 pm

Nonstop3h 49m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 57 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, September is the cheapest month in which you can book a flight from Las Vegas to Illinois (average of $232). Flying from Las Vegas to Illinois in June is currently the most expensive (average of $308). 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 December 18, 2024.

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 December 18, 2024.

The most flights from LAS to USIL are scheduled on a Wednesday (33 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 December 18, 2024.
Peruse reviews from past customers who have flown with Frontier, Delta 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
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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.

Alaska Airlines
8.0
Very good
9,552 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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.

Allegiant Air
7.4
Good
829 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

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 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 $55. 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 Avianca (96%), Austrian Airlines (95%) or Lufthansa (94%) 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 $1,072, our data shows the cheapest flight currently is $66. When looking at the most popular route, (Las Vegas Harry Reid Intl - Chicago O'Hare Intl), you can expect to pay $102 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, September is the cheapest month in which you can book a flight from Las Vegas to Illinois (average of $232). Flying from Las Vegas to Illinois in June is currently the most expensive (average of $308). 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$151FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$70Average$183FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$114Average$204FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$152Average$362FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$161Average$433FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$198Average$345FlexibilityNo cancel feeOn-time63%
DeltaCheapest$257Average$471FlexibilityNo cancel feeOn-timeN/A
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