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Cheap flights from Las Vegas to Illinois from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Illinois departing on 1/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Las Vegas to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:00 am - 12:12 pm
LAS
-
STL
3h 12mnonstop
Frontier Logo
1:07 pm - 2:53 pm
STL
-
LAS
3h 46mnonstop
$79Frontier
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
3:32 pm - 8:48 pm
LAS
-
STL
3h 16mnonstop
Frontier Logo
9:45 pm - 11:44 pm
STL
-
LAS
3h 59mnonstop
$80Frontier
Fri, Feb 6 - Mon, Feb 9
Frontier Logo
7:00 am - 12:12 pm
LAS
-
STL
3h 12mnonstop
Frontier Logo
1:35 pm - 3:30 pm
STL
-
LAS
3h 55mnonstop
$88Frontier
Mon, Jan 12 - Mon, Jan 19
Frontier Logo
10:59 am - 4:52 pm
LAS
-
ORD
27h 53m1 stop
Frontier Logo
10:41 pm - 12:59 am
ORD
-
LAS
4h 18mnonstop
$100Frontier
Fri, Jan 16 - Sun, Jan 18
Spirit Airlines Logo
11:59 pm - 5:31 am
LAS
-
ORD
3h 32mnonstop
Spirit Airlines Logo
8:53 pm - 10:54 pm
ORD
-
LAS
4h 01mnonstop
$111Spirit Airlines
Thu, May 14 - Tue, May 19
Southwest Logo
11:40 pm - 5:05 am
LAS
-
MDW
3h 25mnonstop
Southwest Logo
8:40 pm - 10:45 pm
MDW
-
LAS
4h 05mnonstop
$159Southwest
Fri, Jan 23 - Sun, Jan 25
United Airlines Logo
12:30 am - 10:12 am
LAS
-
MLI
7h 42m1 stop
United Airlines Logo
3:45 pm - 11:59 pm
MLI
-
LAS
10h 14m2 stops
$243United Airlines
Mon, Jan 12 - Tue, Jan 20
American Airlines Logo
10:07 am - 10:23 pm
LAS
-
MLI
10h 16m2 stops
American Airlines Logo
11:28 am - 8:01 pm
MLI
-
LAS
10h 33m2 stops
$248American Airlines
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
6:00 am - 1:29 pm
LAS
-
MLI
5h 29m1 stop
American Airlines Logo
12:44 pm - 8:47 pm
MLI
-
LAS
10h 03m1 stop
$270American Airlines
Thu, Feb 26 - Sat, Feb 28
United Airlines Logo
12:36 am - 12:36 pm
LAS
-
PIA
10h 00m2 stops
United Airlines Logo
1:25 pm - 6:07 pm
PIA
-
LAS
6h 42m1 stop
$359United Airlines
Thu, Apr 2 - Sat, Apr 4

Spirit Airlines flights from Las Vegas to Illinois

Our best Spirit Airlines deals on Las Vegas to Illinois flight tickets
Spirit Airlines
May 14
LAS11:59 pmLas Vegas Harry Reid Intl
3h 32m
ORD5:31 amChicago O'Hare Intl
May 19
ORD8:53 pmChicago O'Hare Intl
4h 01m
LAS10:54 pmLas Vegas Harry Reid Intl
$111
Find similar
Spirit Airlines
May 15
LAS11:59 pmLas Vegas Harry Reid Intl
3h 32m
ORD5:31 amChicago O'Hare Intl
May 19
ORD8:53 pmChicago O'Hare Intl
4h 01m
LAS10:54 pmLas Vegas Harry Reid Intl
$136
Find similar
Spirit Airlines
May 14
LAS7:00 amLas Vegas Harry Reid Intl
6h 42m
1 stop
ORD3:42 pmChicago O'Hare Intl
May 19
ORD8:53 pmChicago O'Hare Intl
4h 01m
LAS10:54 pmLas Vegas Harry Reid Intl
$149
Find similar

American Airlines flights from Las Vegas to Illinois

Our best American Airlines deals on Las Vegas to Illinois flight tickets
American Airlines
Jan 13
LAS2:08 pmLas Vegas Harry Reid Intl
3h 48m
ORD7:56 pmChicago O'Hare Intl
Jan 20
ORD7:40 pmChicago O'Hare Intl
4h 08m
LAS9:48 pmLas Vegas Harry Reid Intl
$155
Find similar
American Airlines
Dec 31
LAS11:59 pmLas Vegas Harry Reid Intl
3h 53m
ORD5:52 amChicago O'Hare Intl
Jan 10
ORD7:38 pmChicago O'Hare Intl
4h 08m
LAS9:46 pmLas Vegas Harry Reid Intl
$179
Find similar
American Airlines
Dec 24
LAS11:59 pmLas Vegas Harry Reid Intl
3h 53m
ORD5:52 amChicago O'Hare Intl
Jan 1
ORD6:55 pmChicago O'Hare Intl
4h 07m
LAS9:02 pmLas Vegas Harry Reid Intl
$211
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Las Vegas to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 1/9

7:00 am-12:12 pm

Nonstop3h 12m

Lambert-St Louis

Mon 1/12

1:07 pm-2:53 pm

Nonstop3h 46m

$79

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 2/6

3:32 pm-8:48 pm

Nonstop3h 16m

Lambert-St Louis

Mon 2/9

9:45 pm-11:44 pm

Nonstop3h 59m

$80

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Mon 1/12

7:00 am-12:12 pm

Nonstop3h 12m

Lambert-St Louis

Mon 1/19

1:35 pm-3:30 pm

Nonstop3h 55m

$88

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 1/16

10:59 am-4:52 pm

1 stop27h 53m

Chicago O'Hare Intl

Sun 1/18

10:41 pm-12:59 am

Nonstop4h 18m

$100

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Thu 5/14

11:59 pm-5:31 am

Nonstop3h 32m

Chicago O'Hare Intl

Tue 5/19

8:53 pm-10:54 pm

Nonstop4h 01m

$111

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Fri 1/23

11:40 pm-5:05 am

Nonstop3h 25m

Chicago Midway

Sun 1/25

8:40 pm-10:45 pm

Nonstop4h 05m

$159

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Mon 1/12

12:30 am-10:12 am

1 stop7h 42m

Moline Quad-City

Tue 1/20

3:45 pm-11:59 pm

2 stops10h 14m

$243

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Tue 1/13

10:07 am-10:23 pm

2 stops10h 16m

Moline Quad-City

Tue 1/20

11:28 am-8:01 pm

2 stops10h 33m

$248

Las VegasMoline

LAS - MLI

LASMLI

Las Vegas Harry Reid Intl

Thu 2/26

6:00 am-1:29 pm

1 stop5h 29m

Moline Quad-City

Sat 2/28

12:44 pm-8:47 pm

1 stop10h 03m

$270

Las VegasPeoria

LAS - PIA

LASPIA

Las Vegas Harry Reid Intl

Thu 4/2

12:36 am-12:36 pm

2 stops10h 00m

Greater Peoria

Sat 4/4

1:25 pm-6:07 pm

1 stop6h 42m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Las Vegas to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Las Vegas is in January. Flight prices, which tend to average around $159, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $159.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Las Vegas to Illinois is on a Friday when prices can be found for as low as $290. Flights from Las Vegas to Illinois on a Sunday will generally be more expensive and average around $492. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Las Vegas to Illinois during this time can be as low as $294. Flights at noon are often more expensive with an average ticket price of $487.

What is the cheapest Las Vegas Harry Reid Intl to Illinois flight route?

Fly from Las Vegas Harry Reid Intl to Chicago Greater Rockford for the best Las Vegas Harry Reid Intl - Illinois flight prices

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

You are more likely to see cheaper flights to Illinois from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $251 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Las Vegas for as low as $177 on momondo.

What cabin class options are available on Las Vegas Harry Reid Intl to Illinois flights?

There are 4 cabin classes available to choose from on Las Vegas Harry Reid Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Las Vegas to Illinois flights?

No. A direct flight is the cheapest option for a flight between Las Vegas to Illinois.

Cheap Las Vegas to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Illinois

Best Price Found

$72

Fastest flight time

3h 05m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Las Vegas in the past 72 hours is $72. The best round-trip flight deal from Las Vegas to Illinois found on momondo in the last 72 hours is $178.
The fastest flight from Las Vegas to Illinois takes 3h 05m
Direct flights go from Las Vegas to Illinois every day.
There are 98 airports in Illinois. From Las Vegas there are direct flights to Chicago Greater Rockford (RFD), Chicago Midway (MDW), Greater Peoria (PIA), Lambert-St Louis (STL) and 1 more.
Search flight deals

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Illinois?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Illinois?

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Las Vegas Harry Reid Intl Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Las Vegas to Illinois?

Best airlines flying from Las Vegas to Illinois

Compare and see reviews for airlines that fly from Las Vegas to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $56Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $67Free CancellationRating
6.3
8,191 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $91Free CancellationRating
7.2
700 reviews
Search Allegiant Air flights
DeltaPriceFrom $118Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $139Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
American AirlinesPriceFrom $157Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
SouthwestPriceFrom $159Free CancellationRating
7.9
4,249 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Illinois?

Finding the right flight to Illinois from Las Vegas is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from Las Vegas to Illinois with flexible booking policies on momondo?

All flight searches from Las Vegas to Illinois on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Las Vegas to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Las Vegas.

I’m not ready to book a flight from Las Vegas to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Las Vegas to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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