Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Las Vegas from $93

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Las Vegas departing on 10/23. 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 St. Louis to Las Vegas

Cheap round-trip flights

Frontier Logo
10:39 am - 9:41 pmSTL-LAS
13h 02m1 stop
Frontier Logo
8:34 am - 1:53 pmLAS-STL
3h 19mnonstop
$171Frontier
Find Deal
Sun, Sep 14 - Thu, Sep 18
Frontier Logo
7:52 pm - 11:32 pmSTL-LAS
5h 40m1 stop
Frontier Logo
12:59 am - 9:07 amLAS-STL
6h 08m1 stop
$172Frontier
Find Deal
Wed, Oct 8 - Sun, Oct 12
Frontier Logo
7:52 pm - 11:32 pmSTL-LAS
5h 40m1 stop
Frontier Logo
8:49 pm - 9:22 amLAS-STL
10h 33m1 stop
$173Frontier
Find Deal
Sun, Oct 12 - Sat, Oct 18
Frontier Logo
2:42 pm - 4:22 pmSTL-LAS
3h 40mnonstop
Frontier Logo
12:59 am - 9:07 amLAS-STL
6h 08m1 stop
$174Frontier
Find Deal
Sun, Nov 2 - Sat, Nov 8
Frontier Logo
7:55 pm - 8:51 pmSTL-LAS
26h 56m1 stop
Frontier Logo
12:59 am - 9:06 amLAS-STL
6h 07m1 stop
$175Frontier
Find Deal
Fri, Sep 12 - Sun, Sep 14
Frontier Logo
7:55 pm - 8:51 pmSTL-LAS
26h 56m1 stop
Frontier Logo
12:59 am - 9:06 amLAS-STL
6h 07m1 stop
$176Frontier
Find Deal
Fri, Sep 12 - Sat, Sep 13
Frontier Logo
9:35 pm - 11:11 pmSTL-LAS
3h 36mnonstop
Frontier Logo
6:00 am - 9:07 amLAS-STL
25h 07m1 stop
$177Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
4:00 pm - 9:23 pmSTL-LAS
7h 23m1 stop
Frontier Logo
12:59 am - 9:06 amLAS-STL
6h 07m1 stop
$178Frontier
Find Deal
Sun, Sep 14 - Sat, Sep 20
Logo
7:55 pm - 11:33 pmSTL-LAS
5h 38m1 stop
Logo
10:07 pm - 10:02 amLAS-STL
9h 55m1 stop
$185
Find Deal
Wed, Oct 1 - Mon, Oct 6
Logo
2:30 pm - 9:38 pmSTL-LAS
9h 08m1 stop
Logo
8:34 am - 1:53 pmLAS-STL
3h 19mnonstop
$187
Find Deal
Mon, Sep 1 - Thu, Sep 4

Frontier flights from St. Louis to Las Vegas

Our best Frontier deals on St. Louis to Las Vegas flight tickets
Frontier
Sep 14
STL10:39 amLambert-St Louis
13h 02m
1 stop
LAS9:41 pmLas Vegas Harry Reid Intl
Sep 18
LAS8:34 amLas Vegas Harry Reid Intl
3h 19m
STL1:53 pmLambert-St Louis
$171
Find similar
Frontier
Oct 8
STL7:52 pmLambert-St Louis
5h 40m
1 stop
LAS11:32 pmLas Vegas Harry Reid Intl
Oct 12
LAS12:59 amLas Vegas Harry Reid Intl
6h 08m
1 stop
STL9:07 amLambert-St Louis
$172
Find similar
Frontier
Oct 12
STL7:52 pmLambert-St Louis
5h 40m
1 stop
LAS11:32 pmLas Vegas Harry Reid Intl
Oct 18
LAS8:49 pmLas Vegas Harry Reid Intl
10h 33m
1 stop
STL9:22 amLambert-St Louis
$173
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis 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 19, 2025.
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 9/14

10:39 am-9:41 pm

1 stop13h 02m

Las Vegas Harry Reid Intl

Thu 9/18

8:34 am-1:53 pm

Nonstop3h 19m

$171

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 10/8

7:52 pm-11:32 pm

1 stop5h 40m

Las Vegas Harry Reid Intl

Sun 10/12

12:59 am-9:07 am

1 stop6h 08m

$172

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 10/12

7:52 pm-11:32 pm

1 stop5h 40m

Las Vegas Harry Reid Intl

Sat 10/18

8:49 pm-9:22 am

1 stop10h 33m

$173

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 11/2

2:42 pm-4:22 pm

Nonstop3h 40m

Las Vegas Harry Reid Intl

Sat 11/8

12:59 am-9:07 am

1 stop6h 08m

$174

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 9/12

7:55 pm-8:51 pm

1 stop26h 56m

Las Vegas Harry Reid Intl

Sun 9/14

12:59 am-9:06 am

1 stop6h 07m

$175

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 9/12

7:55 pm-8:51 pm

1 stop26h 56m

Las Vegas Harry Reid Intl

Sat 9/13

12:59 am-9:06 am

1 stop6h 07m

$176

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 10/3

9:35 pm-11:11 pm

Nonstop3h 36m

Las Vegas Harry Reid Intl

Mon 10/6

6:00 am-9:07 am

1 stop25h 07m

$177

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 9/14

4:00 pm-9:23 pm

1 stop7h 23m

Las Vegas Harry Reid Intl

Sat 9/20

12:59 am-9:06 am

1 stop6h 07m

$178

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 10/1

7:55 pm-11:33 pm

1 stop5h 38m

Las Vegas Harry Reid Intl

Mon 10/6

10:07 pm-10:02 am

1 stop9h 55m

$185

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 9/1

2:30 pm-9:38 pm

1 stop9h 08m

Las Vegas Harry Reid Intl

Thu 9/4

8:34 am-1:53 pm

Nonstop3h 19m

$187

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 St. Louis 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 February is, on average, the cheapest month to fly to Las Vegas from St. Louis, with most prices found around $221. The month of August is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $271.

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

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $255. Flights from St. Louis to Las Vegas on a Wednesday will generally be more expensive and average around $392. 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 $244. Flights to Las Vegas are more costly in the morning, with an average ticket price of $488. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Las Vegas Harry Reid Intl flight route?

Fly from Lambert-St Louis to Las Vegas Harry Reid Intl for the best Lambert-St Louis - 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 St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $301 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from St. Louis for as low as $258 on momondo.

What cabin class options are available on Lambert-St Louis to Las Vegas Harry Reid Intl flights?

There are 1 cabin classes available to choose from on Lambert-St Louis 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.

How have St. Louis to Las Vegas flight prices changed over time?

As of August 2025, prices for St. Louis to Las Vegas flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Las Vegas

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

Cheap St. Louis to Las Vegas (STL to LAS) flight deals and tips

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

Best Price Found

$93

Fastest flight time

3h 36m

Direct flights

Every day

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from St. Louis in the past 72 hours is $93. The best round-trip flight deal from St. Louis to Las Vegas found on momondo in the last 72 hours is $171.
The fastest flight from St. Louis to Las Vegas takes 3h 36m
Direct flights go from St. Louis to Las Vegas every day.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

  • How far is Lambert-St Louis to Las Vegas Harry Reid Intl by plane?

    The straight-line distance from Lambert-St Louis to Las Vegas Harry Reid Intl is 1374.1 mi. 3h 36m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport 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 Lambert-St Louis Airport to Las Vegas Harry Reid Intl Airport.

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

    The necessary travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Las Vegas?

  • What is the most popular airline from St. Louis to Las Vegas?

Best airlines flying from St. Louis to Las Vegas

Compare and see reviews for airlines that fly from St. Louis to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $79Free CancellationRating
6.3
8,037 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $104Free CancellationRating
7.2
701 reviews
Search Allegiant Air flights
FrontierPriceFrom $105Free CancellationRating
5.8
3,211 reviews
Search Frontier flights
DeltaPriceFrom $178Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
SouthwestPriceFrom $272Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $342Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Southwest Flights From St. Louis to Las Vegas

    Southwest operates around 50 flights from St. Louis to Las Vegas every week. The average price of these flights found in the last 72 hours has been $459, but momondo users have found Southwest deals from St. Louis to Las Vegas from as low as $272 round-trip. Southwest has been scored 8.0/10 in 4,246 reviews.

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 St. Louis to Las Vegas?

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

Can I find flights from St. Louis to Las Vegas with flexible booking policies on momondo?

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

How can momondo help me find flights from St. Louis to Las Vegas?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Las Vegas.

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

Price alerts on flights to Las Vegas from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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
Sun 8/24
Sun 8/31
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States