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Cheap flights from Illinois to Las Vegas from $63

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 1/9. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
9:26 pm - 11:01 pmMLI-LAS
3h 35mnonstop
Allegiant Air Logo
3:20 pm - 8:36 pmLAS-MLI
3h 16mnonstop
$110Allegiant Air
Find Deal
dom., ene. 11 - jue., ene. 29
Allegiant Air Logo
9:26 pm - 11:01 pmMLI-LAS
3h 35mnonstop
Allegiant Air Logo
3:20 pm - 8:36 pmLAS-MLI
3h 16mnonstop
$116Allegiant Air
Find Deal
dom., ene. 11 - jue., ene. 15
Frontier Logo
2:26 pm - 10:23 amORD-LAS
21h 57m1 stop
Frontier Logo
6:00 am - 11:42 amLAS-ORD
3h 42mnonstop
$124Frontier
Find Deal
lun., dic. 8 - vie., dic. 12
Frontier Logo
12:59 pm - 3:15 pmORD-LAS
4h 16mnonstop
Frontier Logo
12:52 pm - 10:24 pmLAS-ORD
7h 32m1 stop
$125Frontier
Find Deal
dom., dic. 7 - jue., dic. 11
Multiple Airlines Logo
3:25 pm - 9:11 pmORD-LAS
7h 46m1 stop
Multiple Airlines Logo
3:19 pm - 9:11 pmLAS-ORD
3h 52mnonstop
$128Multiple Airlines
Find Deal
jue., ene. 8 - vie., ene. 16
Multiple Airlines Logo
9:15 am - 6:47 pmMDW-LAS
11h 32m1 stop
Multiple Airlines Logo
10:26 am - 5:20 pmLAS-MDW
28h 54m1 stop
$129Multiple Airlines
Find Deal
dom., ene. 11 - sáb., ene. 17
United Airlines Logo
6:00 am - 8:13 amORD-LAS
4h 13mnonstop
United Airlines Logo
11:59 pm - 5:31 amLAS-ORD
3h 32mnonstop
$131United Airlines
Find Deal
dom., feb. 15 - vie., feb. 20
Southwest Logo
7:50 pm - 9:55 pmMDW-LAS
4h 05mnonstop
Southwest Logo
11:40 pm - 5:05 amLAS-MDW
3h 25mnonstop
$131Southwest
Find Deal
sáb., ene. 17 - mar., ene. 20
Southwest Logo
8:20 pm - 10:15 pmMDW-LAS
3h 55mnonstop
Southwest Logo
2:05 pm - 7:35 pmLAS-MDW
3h 30mnonstop
$136Southwest
Find Deal
mié., dic. 17 - mié., dic. 24
United Airlines Logo
1:24 pm - 6:30 pmPIA-LAS
7h 06m1 stop
United Airlines Logo
12:30 am - 10:10 amLAS-PIA
7h 40m1 stop
$259United Airlines
Find Deal
mié., feb. 4 - vie., feb. 6

Allegiant Air flights from Illinois to Las Vegas

Our best Allegiant Air deals on Illinois to Las Vegas flight tickets
Allegiant Air
Jan 11
MLI9:26 pmMoline Quad-City
3h 35m
LAS11:01 pmLas Vegas Harry Reid Intl
Jan 29
LAS3:20 pmLas Vegas Harry Reid Intl
3h 16m
MLI8:36 pmMoline Quad-City
$110
Find similar
Allegiant Air
Jan 11
MLI9:26 pmMoline Quad-City
3h 35m
LAS11:01 pmLas Vegas Harry Reid Intl
Jan 15
LAS3:20 pmLas Vegas Harry Reid Intl
3h 16m
MLI8:36 pmMoline Quad-City
$116
Find similar
Allegiant Air
Feb 1
RFD1:24 pmChicago Greater Rockford
3h 52m
LAS3:16 pmLas Vegas Harry Reid Intl
Feb 5
LAS7:10 amLas Vegas Harry Reid Intl
3h 24m
RFD12:34 pmChicago Greater Rockford
$125
Find similar

Frontier flights from Illinois to Las Vegas

Our best Frontier deals on Illinois to Las Vegas flight tickets
Frontier
Dec 8
ORD2:26 pmChicago O'Hare Intl
21h 57m
1 stop
LAS10:23 amLas Vegas Harry Reid Intl
Dec 12
LAS6:00 amLas Vegas Harry Reid Intl
3h 42m
ORD11:42 amChicago O'Hare Intl
$124
Find similar
Frontier
Dec 7
ORD12:59 pmChicago O'Hare Intl
4h 16m
LAS3:15 pmLas Vegas Harry Reid Intl
Dec 11
LAS12:52 pmLas Vegas Harry Reid Intl
7h 32m
1 stop
ORD10:24 pmChicago O'Hare Intl
$125
Find similar
Frontier
Jan 30
ORD9:38 pmChicago O'Hare Intl
4h 21m
LAS11:59 pmLas Vegas Harry Reid Intl
Feb 2
LAS11:59 pmLas Vegas Harry Reid Intl
12h 03m
1 stop
ORD2:02 pmChicago O'Hare Intl
$126
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 noviembre 21, 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. 1/11

9:26 pm-11:01 pm

Nonstop3h 35m

Las Vegas Harry Reid Intl

jue. 1/29

3:20 pm-8:36 pm

Nonstop3h 16m

$110

MolineLas Vegas

MLI - LAS

MLILAS

Moline Quad-City

dom. 1/11

9:26 pm-11:01 pm

Nonstop3h 35m

Las Vegas Harry Reid Intl

jue. 1/15

3:20 pm-8:36 pm

Nonstop3h 16m

$116

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

lun. 12/8

2:26 pm-10:23 am

1 stop21h 57m

Las Vegas Harry Reid Intl

vie. 12/12

6:00 am-11:42 am

Nonstop3h 42m

$124

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

dom. 12/7

12:59 pm-3:15 pm

Nonstop4h 16m

Las Vegas Harry Reid Intl

jue. 12/11

12:52 pm-10:24 pm

1 stop7h 32m

$125

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

jue. 1/8

3:25 pm-9:11 pm

1 stop7h 46m

Las Vegas Harry Reid Intl

vie. 1/16

3:19 pm-9:11 pm

Nonstop3h 52m

$128

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

dom. 1/11

9:15 am-6:47 pm

1 stop11h 32m

Las Vegas Harry Reid Intl

sáb. 1/17

10:26 am-5:20 pm

1 stop28h 54m

$129

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

dom. 2/15

6:00 am-8:13 am

Nonstop4h 13m

Las Vegas Harry Reid Intl

vie. 2/20

11:59 pm-5:31 am

Nonstop3h 32m

$131

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

sáb. 1/17

7:50 pm-9:55 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

mar. 1/20

11:40 pm-5:05 am

Nonstop3h 25m

$131

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

mié. 12/17

8:20 pm-10:15 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

mié. 12/24

2:05 pm-7:35 pm

Nonstop3h 30m

$136

PeoriaLas Vegas

PIA - LAS

PIALAS

Greater Peoria

mié. 2/4

1:24 pm-6:30 pm

1 stop7h 06m

Las Vegas Harry Reid Intl

vie. 2/6

12:30 am-10:10 am

1 stop7h 40m

$259

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 $218. The month of February is another great option to travel to Las Vegas, with average flight prices from Illinois averaging around $225.

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 $241. Flights from Illinois to Las Vegas on a Thursday will generally be more expensive and average around $311. 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 $233. 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 O'Hare Intl 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 $271 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 $222 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

$77

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 $77. The best round-trip flight deal from Illinois to Las Vegas found on momondo in the last 72 hours is $162.
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 $77Free CancellationRating
5.8
3,104 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $90Free CancellationRating
6.3
8,160 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $110Free CancellationRating
7.2
700 reviews
Search Allegiant Air flights
DeltaPriceFrom $125Free CancellationRating
7.9
8,002 reviews
Search Delta flights
United AirlinesPriceFrom $149Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
SouthwestPriceFrom $159Free CancellationRating
8.0
4,251 reviews
Search Southwest flights
Sun Country AirPriceFrom $203Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $222Free CancellationRating
8.0
11,325 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
Sunrise Manor
Winchester
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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