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Cheap flights from Illinois to Las Vegas from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Las Vegas departing on 11/19. 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 Illinois to Las Vegas

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
12:28 pm - 1:59 pmMLI-LAS
3h 31mnonstop
Allegiant Air Logo
6:25 am - 11:38 amLAS-MLI
3h 13mnonstop
$116Allegiant Air
Find Deal
dom., oct. 19 - jue., oct. 23
Allegiant Air Logo
12:28 pm - 1:59 pmMLI-LAS
3h 31mnonstop
Allegiant Air Logo
6:25 am - 11:38 amLAS-MLI
3h 13mnonstop
$128Allegiant Air
Find Deal
dom., oct. 12 - jue., oct. 16
Frontier Logo
9:07 pm - 10:45 pmSTL-LAS
3h 38mnonstop
Frontier Logo
8:32 am - 1:57 pmLAS-STL
3h 25mnonstop
$137Frontier
Find Deal
lun., nov. 10 - vie., nov. 14
Frontier Logo
9:59 pm - 11:37 pmSTL-LAS
3h 38mnonstop
Frontier Logo
2:47 pm - 8:12 pmLAS-STL
3h 25mnonstop
$138Frontier
Find Deal
lun., oct. 27 - vie., oct. 31
Multiple Airlines Logo
7:05 am - 1:13 pmORD-LAS
8h 08m1 stop
Multiple Airlines Logo
1:48 pm - 7:34 pmLAS-ORD
3h 46mnonstop
$140Multiple Airlines
Find Deal
sáb., oct. 25 - mié., oct. 29
Southwest Logo
1:50 pm - 6:25 pmMDW-LAS
6h 35m1 stop
Southwest Logo
11:40 pm - 5:05 amLAS-MDW
3h 25mnonstop
$141Southwest
Find Deal
vie., oct. 31 - mar., nov. 4
Multiple Airlines Logo
6:35 am - 8:29 amORD-LAS
3h 54mnonstop
Multiple Airlines Logo
11:02 pm - 12:26 pmLAS-ORD
11h 24m1 stop
$142Multiple Airlines
Find Deal
mié., oct. 29 - mié., oct. 29
Spirit Airlines Logo
10:27 am - 11:48 pmORD-LAS
15h 21m1 stop
Spirit Airlines Logo
1:48 pm - 7:34 pmLAS-ORD
3h 46mnonstop
$144Spirit Airlines
Find Deal
vie., oct. 24 - mié., oct. 29
Southwest Logo
7:20 pm - 9:15 pmMDW-LAS
3h 55mnonstop
Southwest Logo
10:15 am - 5:15 pmLAS-MDW
5h 00m1 stop
$147Southwest
Find Deal
sáb., oct. 25 - mié., oct. 29
Spirit Airlines Logo
11:55 am - 9:02 pmORD-LAS
11h 07m1 stop
Spirit Airlines Logo
1:20 am - 5:52 amLAS-ORD
3h 32mnonstop
$147Spirit Airlines
Find Deal
sáb., oct. 25 - sáb., nov. 1

Allegiant Air flights from Illinois to Las Vegas

Our best Allegiant Air deals on Illinois to Las Vegas flight tickets
Allegiant Air
Oct 19
MLI12:28 pmMoline Quad-City
3h 31m
LAS1:59 pmLas Vegas Harry Reid Intl
Oct 23
LAS6:25 amLas Vegas Harry Reid Intl
3h 13m
MLI11:38 amMoline Quad-City
$116
Find similar
Allegiant Air
Oct 12
MLI12:28 pmMoline Quad-City
3h 31m
LAS1:59 pmLas Vegas Harry Reid Intl
Oct 16
LAS6:25 amLas Vegas Harry Reid Intl
3h 13m
MLI11:38 amMoline Quad-City
$128
Find similar
Allegiant Air
Oct 12
MLI12:28 pmMoline Quad-City
3h 31m
LAS1:59 pmLas Vegas Harry Reid Intl
Oct 30
LAS6:20 amLas Vegas Harry Reid Intl
3h 13m
MLI11:33 amMoline Quad-City
$129
Find similar

Frontier flights from Illinois to Las Vegas

Our best Frontier deals on Illinois to Las Vegas flight tickets
Frontier
Nov 10
STL9:07 pmLambert-St Louis
3h 38m
LAS10:45 pmLas Vegas Harry Reid Intl
Nov 14
LAS8:32 amLas Vegas Harry Reid Intl
3h 25m
STL1:57 pmLambert-St Louis
$137
Find similar
Frontier
Oct 27
STL9:59 pmLambert-St Louis
3h 38m
LAS11:37 pmLas Vegas Harry Reid Intl
Oct 31
LAS2:47 pmLas Vegas Harry Reid Intl
3h 25m
STL8:12 pmLambert-St Louis
$138
Find similar
Frontier
Oct 24
STL9:59 pmLambert-St Louis
3h 38m
LAS11:37 pmLas Vegas Harry Reid Intl
Oct 31
LAS7:08 amLas Vegas Harry Reid Intl
23h 59m
1 stop
STL9:07 amLambert-St Louis
$139
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated octubre 3, 2025.
Use the filters below to find and compare flights from Illinois to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

dom. 10/19

12:28 pm-1:59 pm

Nonstop3h 31m

Las Vegas Harry Reid Intl

jue. 10/23

6:25 am-11:38 am

Nonstop3h 13m

$116

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

dom. 10/12

12:28 pm-1:59 pm

Nonstop3h 31m

Las Vegas Harry Reid Intl

jue. 10/16

6:25 am-11:38 am

Nonstop3h 13m

$128

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 11/10

9:07 pm-10:45 pm

Nonstop3h 38m

Las Vegas Harry Reid Intl

vie. 11/14

8:32 am-1:57 pm

Nonstop3h 25m

$137

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

lun. 10/27

9:59 pm-11:37 pm

Nonstop3h 38m

Las Vegas Harry Reid Intl

vie. 10/31

2:47 pm-8:12 pm

Nonstop3h 25m

$138

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

sáb. 10/25

7:05 am-1:13 pm

1 stop8h 08m

Las Vegas Harry Reid Intl

mié. 10/29

1:48 pm-7:34 pm

Nonstop3h 46m

$140

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

vie. 10/31

1:50 pm-6:25 pm

1 stop6h 35m

Las Vegas Harry Reid Intl

mar. 11/4

11:40 pm-5:05 am

Nonstop3h 25m

$141

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

mié. 10/29

6:35 am-8:29 am

Nonstop3h 54m

Las Vegas Harry Reid Intl

mié. 10/29

11:02 pm-12:26 pm

1 stop11h 24m

$142

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

vie. 10/24

10:27 am-11:48 pm

1 stop15h 21m

Las Vegas Harry Reid Intl

mié. 10/29

1:48 pm-7:34 pm

Nonstop3h 46m

$144

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

sáb. 10/25

7:20 pm-9:15 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

mié. 10/29

10:15 am-5:15 pm

1 stop5h 00m

$147

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

sáb. 10/25

11:55 am-9:02 pm

1 stop11h 07m

Las Vegas Harry Reid Intl

sáb. 11/1

1:20 am-5:52 am

Nonstop3h 32m

$147

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 Las Vegas from

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

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 Las Vegas?

The month of January is, on average, the cheapest month to fly to Las Vegas from Illinois, with most prices found around $224. The month of February is another great option to travel to Las Vegas, with average flight prices from Illinois averaging around $227.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $239. Flights from Illinois to Las Vegas on a Thursday will generally be more expensive and average around $309. 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 Las Vegas?

The cheapest time of day to fly to Las Vegas is in the evening when flights can be purchased for as low as $234. Flights to Las Vegas are more costly in the morning, with an average ticket price of $310. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Las Vegas?

You are more likely to see cheaper flights to Las Vegas from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $263 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Illinois for as low as $209 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Las Vegas Harry Reid Intl 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 Illinois to Las Vegas flights?

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

Cheap Illinois to Las Vegas flight deals and tips

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

Best Price Found

$75

Fastest flight time

3h 30m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Illinois in the past 72 hours is $75. The best round-trip flight deal from Illinois to Las Vegas found on momondo in the last 72 hours is $173.
The fastest flight from Illinois to Las Vegas takes 3h 30m
Direct flights go from Illinois to Las Vegas every day.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

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

    Prices for flights from Illinois to Las Vegas Harry Reid Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The travel and health documents you'll need for your trip to Las Vegas Harry Reid Intl Airport 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 Las Vegas Harry Reid Intl Airport. 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 Illinois to Las Vegas?

Best airlines flying from Illinois to Las Vegas

Compare and see reviews for airlines that fly from Illinois to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $78Free CancellationRating
5.8
3,155 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $89Free CancellationRating
6.3
8,070 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $110Free CancellationRating
7.2
699 reviews
Search Allegiant Air flights
DeltaPriceFrom $125Free CancellationRating
7.9
7,962 reviews
Search Delta flights
SouthwestPriceFrom $159Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $169Free CancellationRating
7.4
8,933 reviews
Search United Airlines flights
Sun Country AirPriceFrom $203Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $222Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

Traveling to a place near Las Vegas?

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Las Vegas. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Las Vegas from Illinois which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Illinois to Las Vegas flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Illinois to Las Vegas now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Las Vegas and let you know when they change.

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