Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Illinois to Las Vegas 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 Illinois to Las Vegas departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Illinois to Las Vegas

Cheap round-trip flights

Spirit Airlines Logo
6:00 am - 7:45 amORD-LAS
3h 45mnonstop
Spirit Airlines Logo
11:10 pm - 4:50 amLAS-ORD
3h 40mnonstop
$86Spirit Airlines
Find Deal
mar., ago. 19 - mié., ago. 20
Spirit Airlines Logo
6:00 am - 7:45 amORD-LAS
3h 45mnonstop
Spirit Airlines Logo
11:10 pm - 4:50 amLAS-ORD
3h 40mnonstop
$88Spirit Airlines
Find Deal
lun., ago. 18 - mié., ago. 20
Allegiant Air Logo
12:58 pm - 2:42 pmRFD-LAS
3h 44mnonstop
Allegiant Air Logo
6:45 am - 12:08 pmLAS-RFD
3h 23mnonstop
$101Allegiant Air
Find Deal
dom., ago. 24 - jue., ago. 28
Frontier Logo
9:54 pm - 12:05 amORD-LAS
4h 11mnonstop
Frontier Logo
2:59 pm - 8:59 pmLAS-ORD
4h 00mnonstop
$103Frontier
Find Deal
lun., oct. 6 - vie., oct. 10
Frontier Logo
9:54 pm - 12:05 amORD-LAS
4h 11mnonstop
Frontier Logo
6:00 am - 11:48 amLAS-ORD
3h 48mnonstop
$105Frontier
Find Deal
lun., sep. 22 - jue., sep. 25
Allegiant Air Logo
12:58 pm - 2:42 pmRFD-LAS
3h 44mnonstop
Allegiant Air Logo
6:45 am - 12:08 pmLAS-RFD
3h 23mnonstop
$109Allegiant Air
Find Deal
dom., ago. 24 - jue., ago. 28
Logo
9:56 pm - 12:05 amORD-LAS
4h 09mnonstop
Logo
11:10 pm - 4:50 amLAS-ORD
3h 40mnonstop
$111
Find Deal
dom., ago. 17 - mié., ago. 20
Logo
6:21 pm - 8:11 pmORD-LAS
3h 50mnonstop
Logo
2:44 pm - 8:50 pmLAS-ORD
4h 06mnonstop
$113
Find Deal
mar., ago. 19 - vie., ago. 22
Southwest Logo
7:20 pm - 9:10 pmMDW-LAS
3h 50mnonstop
Southwest Logo
6:10 am - 11:45 amLAS-MDW
3h 35mnonstop
$159Southwest
Find Deal
sáb., ago. 30 - mié., sep. 3
Southwest Logo
7:20 pm - 9:15 pmMDW-LAS
3h 55mnonstop
Southwest Logo
11:40 pm - 5:05 amLAS-MDW
3h 25mnonstop
$173Southwest
Find Deal
sáb., nov. 1 - lun., nov. 3

Spirit Airlines flights from Illinois to Las Vegas

Our best Spirit Airlines deals on Illinois to Las Vegas flight tickets
Spirit Airlines
Aug 19
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$86
Find similar
Spirit Airlines
Aug 18
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$88
Find similar
Spirit Airlines
Aug 19
ORD6:00 amChicago O'Hare Intl
3h 45m
LAS7:45 amLas Vegas Harry Reid Intl
Aug 20
LAS11:10 pmLas Vegas Harry Reid Intl
3h 40m
ORD4:50 amChicago O'Hare Intl
$94
Find similar

Allegiant Air flights from Illinois to Las Vegas

Our best Allegiant Air deals on Illinois to Las Vegas flight tickets
Allegiant Air
Aug 24
RFD12:58 pmChicago Greater Rockford
3h 44m
LAS2:42 pmLas Vegas Harry Reid Intl
Aug 28
LAS6:45 amLas Vegas Harry Reid Intl
3h 23m
RFD12:08 pmChicago Greater Rockford
$101
Find similar
Allegiant Air
Aug 24
RFD12:58 pmChicago Greater Rockford
3h 44m
LAS2:42 pmLas Vegas Harry Reid Intl
Aug 28
LAS6:45 amLas Vegas Harry Reid Intl
3h 23m
RFD12:08 pmChicago Greater Rockford
$109
Find similar
Allegiant Air
Sep 28
RFD8:37 pmChicago Greater Rockford
3h 34m
LAS10:11 pmLas Vegas Harry Reid Intl
Oct 2
LAS7:30 amLas Vegas Harry Reid Intl
3h 24m
RFD12:54 pmChicago Greater Rockford
$117
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 julio 31, 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

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

mar. 8/19

6:00 am-7:45 am

Nonstop3h 45m

Las Vegas Harry Reid Intl

mié. 8/20

11:10 pm-4:50 am

Nonstop3h 40m

$86

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

lun. 8/18

6:00 am-7:45 am

Nonstop3h 45m

Las Vegas Harry Reid Intl

mié. 8/20

11:10 pm-4:50 am

Nonstop3h 40m

$88

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

dom. 8/24

12:58 pm-2:42 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

jue. 8/28

6:45 am-12:08 pm

Nonstop3h 23m

$101

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

lun. 10/6

9:54 pm-12:05 am

Nonstop4h 11m

Las Vegas Harry Reid Intl

vie. 10/10

2:59 pm-8:59 pm

Nonstop4h 00m

$103

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

lun. 9/22

9:54 pm-12:05 am

Nonstop4h 11m

Las Vegas Harry Reid Intl

jue. 9/25

6:00 am-11:48 am

Nonstop3h 48m

$105

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

dom. 8/24

12:58 pm-2:42 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

jue. 8/28

6:45 am-12:08 pm

Nonstop3h 23m

$109

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

dom. 8/17

9:56 pm-12:05 am

Nonstop4h 09m

Las Vegas Harry Reid Intl

mié. 8/20

11:10 pm-4:50 am

Nonstop3h 40m

$111

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

mar. 8/19

6:21 pm-8:11 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

vie. 8/22

2:44 pm-8:50 pm

Nonstop4h 06m

$113

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

sáb. 8/30

7:20 pm-9:10 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

mié. 9/3

6:10 am-11:45 am

Nonstop3h 35m

$159

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

sáb. 11/1

7:20 pm-9:15 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

lun. 11/3

11:40 pm-5:05 am

Nonstop3h 25m

$173

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 August is, on average, the cheapest month to fly to Las Vegas from Illinois, with most prices found around $210. The month of September is another great option to travel to Las Vegas, with average flight prices from Illinois averaging around $223.

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 $232. Flights from Illinois to Las Vegas on a Thursday will generally be more expensive and average around $291. 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 $231. Flights to Las Vegas are more costly in the morning, with an average ticket price of $305. 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 $256 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 $199 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

$39

Fastest flight time

3h 22m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Illinois in the past 72 hours is $39. The best round-trip flight deal from Illinois to Las Vegas found on momondo in the last 72 hours is $86.
The fastest flight from Illinois to Las Vegas takes 3h 22m
Direct flights go from Illinois to Las Vegas on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: Southwest, Allegiant Air and Frontier.
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
Spirit AirlinesPriceFrom $70Free CancellationRating
6.3
8,049 reviews
Search Spirit Airlines flights
FrontierPriceFrom $70Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
DeltaPriceFrom $108Free CancellationRating
8.0
7,981 reviews
Search Delta flights
Allegiant AirPriceFrom $110Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $149Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $167Free CancellationRating
8.0
4,246 reviews
Search Southwest 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
North Las Vegas
Paradise
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.

An easier way to manage your Las Vegas trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mar. 8/5
mar. 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States