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Cheap flights from Chicago 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 Chicago to Las Vegas departing on 11/6. 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

Frontier Logo
9:52 pm - 11:58 pmORD-LAS
4h 06mnonstop
Frontier Logo
2:59 pm - 8:59 pmLAS-ORD
4h 00mnonstop
$81Frontier
Find Deal
Thu, Oct 30 - Sun, Nov 2
Spirit Airlines Logo
7:09 pm - 7:40 amORD-LAS
14h 31m1 stop
Spirit Airlines Logo
9:36 am - 6:14 pmLAS-ORD
6h 38m1 stop
$85Spirit Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 10
Spirit Airlines Logo
11:15 am - 1:16 pmORD-LAS
4h 01mnonstop
Spirit Airlines Logo
9:36 am - 6:14 pmLAS-ORD
6h 38m1 stop
$86Spirit Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 10
Spirit Airlines Logo
11:15 am - 1:16 pmORD-LAS
4h 01mnonstop
Spirit Airlines Logo
9:36 am - 6:14 pmLAS-ORD
6h 38m1 stop
$87Spirit Airlines
Find Deal
Tue, Sep 16 - Wed, Sep 17
Frontier Logo
9:54 pm - 12:05 amORD-LAS
4h 11mnonstop
Frontier Logo
6:00 am - 11:48 amLAS-ORD
3h 48mnonstop
$88Frontier
Find Deal
Mon, Sep 15 - Thu, Sep 18
Logo
12:46 pm - 2:45 pmORD-LAS
3h 59mnonstop
Logo
2:57 pm - 8:59 pmLAS-ORD
4h 02mnonstop
$89
Find Deal
Sat, Sep 20 - Fri, Sep 26
Allegiant Air Logo
8:37 pm - 10:11 pmRFD-LAS
3h 34mnonstop
Allegiant Air Logo
7:30 am - 12:54 pmLAS-RFD
3h 24mnonstop
$121Allegiant Air
Find Deal
Sun, Sep 28 - Thu, Oct 2
Allegiant Air Logo
8:37 pm - 10:11 pmRFD-LAS
3h 34mnonstop
Allegiant Air Logo
2:23 pm - 7:47 pmLAS-RFD
3h 24mnonstop
$124Allegiant Air
Find Deal
Sun, Sep 21 - Thu, Sep 25
Southwest Logo
4:35 pm - 6:25 pmMDW-LAS
3h 50mnonstop
Southwest Logo
11:40 pm - 5:10 amLAS-MDW
3h 30mnonstop
$159Southwest
Find Deal
Tue, Sep 16 - Tue, Sep 23
Southwest Logo
7:20 pm - 9:10 pmMDW-LAS
3h 50mnonstop
Southwest Logo
11:40 pm - 5:10 amLAS-MDW
3h 30mnonstop
$173Southwest
Find Deal
Sat, Sep 20 - Mon, Sep 22

Frontier flights from Chicago to Las Vegas

Our best Frontier deals on Chicago to Las Vegas flight tickets
Frontier
Oct 30
ORD9:52 pmChicago O'Hare Intl
4h 06m
LAS11:58 pmLas Vegas Harry Reid Intl
Nov 2
LAS2:59 pmLas Vegas Harry Reid Intl
4h 00m
ORD8:59 pmChicago O'Hare Intl
$81
Find similar
Frontier
Sep 15
ORD9:54 pmChicago O'Hare Intl
4h 11m
LAS12:05 amLas Vegas Harry Reid Intl
Sep 18
LAS6:00 amLas Vegas Harry Reid Intl
3h 48m
ORD11:48 amChicago O'Hare Intl
$88
Find similar
Frontier
Sep 22
ORD9:54 pmChicago O'Hare Intl
4h 11m
LAS12:05 amLas Vegas Harry Reid Intl
Sep 26
LAS2:57 pmLas Vegas Harry Reid Intl
4h 02m
ORD8:59 pmChicago O'Hare Intl
$90
Find similar

Allegiant Air flights from Chicago to Las Vegas

Our best Allegiant Air deals on Chicago 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
$117
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
$121
Find similar
Allegiant Air
Sep 21
RFD8:37 pmChicago Greater Rockford
3h 34m
LAS10:11 pmLas Vegas Harry Reid Intl
Sep 25
LAS2:23 pmLas Vegas Harry Reid Intl
3h 24m
RFD7:47 pmChicago Greater Rockford
$124
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 August 17, 2025.
Use the filters below to find and compare flights from Chicago 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

Thu 10/30

9:52 pm-11:58 pm

Nonstop4h 06m

Las Vegas Harry Reid Intl

Sun 11/2

2:59 pm-8:59 pm

Nonstop4h 00m

$81

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 9/9

7:09 pm-7:40 am

1 stop14h 31m

Las Vegas Harry Reid Intl

Wed 9/10

9:36 am-6:14 pm

1 stop6h 38m

$85

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 9/9

11:15 am-1:16 pm

Nonstop4h 01m

Las Vegas Harry Reid Intl

Wed 9/10

9:36 am-6:14 pm

1 stop6h 38m

$86

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 9/16

11:15 am-1:16 pm

Nonstop4h 01m

Las Vegas Harry Reid Intl

Wed 9/17

9:36 am-6:14 pm

1 stop6h 38m

$87

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 9/15

9:54 pm-12:05 am

Nonstop4h 11m

Las Vegas Harry Reid Intl

Thu 9/18

6:00 am-11:48 am

Nonstop3h 48m

$88

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sat 9/20

12:46 pm-2:45 pm

Nonstop3h 59m

Las Vegas Harry Reid Intl

Fri 9/26

2:57 pm-8:59 pm

Nonstop4h 02m

$89

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 9/28

8:37 pm-10:11 pm

Nonstop3h 34m

Las Vegas Harry Reid Intl

Thu 10/2

7:30 am-12:54 pm

Nonstop3h 24m

$121

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 9/21

8:37 pm-10:11 pm

Nonstop3h 34m

Las Vegas Harry Reid Intl

Thu 9/25

2:23 pm-7:47 pm

Nonstop3h 24m

$124

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Tue 9/16

4:35 pm-6:25 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

Tue 9/23

11:40 pm-5:10 am

Nonstop3h 30m

$159

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sat 9/20

7:20 pm-9:10 pm

Nonstop3h 50m

Las Vegas Harry Reid Intl

Mon 9/22

11:40 pm-5:10 am

Nonstop3h 30m

$173

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 Chicago 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 October is, on average, the cheapest month to fly to Las Vegas from Chicago, with most prices found around $224. The month of January is another great option to travel to Las Vegas, with average flight prices from Chicago 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 $235. Flights from Chicago to Las Vegas on a Thursday will generally be more expensive and average around $295. 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 $232. Flights to Las Vegas are more costly in the morning, with an average ticket price of $306. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Fly from Chicago O'Hare Intl to Las Vegas Harry Reid Intl for the best Chicago - 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 Chicago 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 Chicago for as low as $190 on momondo.

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

There are 4 cabin classes available to choose from on Chicago 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 Chicago to Las Vegas flights?

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

How have Chicago to Las Vegas flight prices changed over time?

As of August 2025, prices for Chicago to Las Vegas flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Chicago to Las Vegas

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Las Vegas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago to Las Vegas (CHI to LAS) flight deals and tips

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

Best Price Found

$39

Fastest flight time

3h 34m

Direct flights

Mon, Tue, Wed, Fri and Sat

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Chicago in the past 72 hours is $39. The best round-trip flight deal from Chicago to Las Vegas found on momondo in the last 72 hours is $81.
The fastest flight from Chicago to Las Vegas takes 3h 34m
Direct flights go from Chicago to Las Vegas on Monday, Tuesday, Wednesday, Friday and Saturday. Airlines offering direct flights are: Southwest, Allegiant Air and Spirit Airlines.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

  • How far is Chicago to Las Vegas Harry Reid Intl by plane?

    A flight from Chicago to Las Vegas Harry Reid Intl will travel around 1519.9 mi. A reasonable flight in good conditions will take 3h 34m.

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

    Prices for flights from Chicago to Las Vegas Harry Reid Intl Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago 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 Chicago to Las Vegas?

  • What is the most popular airline from Chicago to Las Vegas?

Best airlines flying from Chicago to Las Vegas

Compare and see reviews for airlines that fly from Chicago to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $69Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $70Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $131Free CancellationRating
7.2
701 reviews
Search Allegiant Air flights
DeltaPriceFrom $158Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $159Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $160Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $176Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
Sun Country AirPriceFrom $203Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $225Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Southwest Flights From Chicago to Las Vegas

    Across 69 Southwest flights from Chicago to Las Vegas this week, the average price was $333, with the best Southwest deals starting from $161 round-trip. 4,246 users have rated Southwest on momondo, with an average score of 8.0/10.

  • United Airlines Flights From Chicago to Las Vegas

    Across 8,925 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Chicago to Las Vegas about 14 times each week, with ticket deals ranging from $175 to $475. Price data is based on momondo searches in the last 72 hours.

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 Chicago to Las Vegas?

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

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

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

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

Once all potential Chicago 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 Chicago to Las Vegas right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Chicago to Las Vegas flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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