How many flights depart from St. Louis to Las Vegas on average per day?

7 flights are operational daily from St. Louis to Las Vegas as of September 2025. The most popular departure time for this route is 2:00PM, with 44% of flights per day taking off in the afternoon.

Which layover airport has the shortest travel time from St. Louis to Las Vegas?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 24m.

Which layover airport offers the lowest fares from St. Louis to Las Vegas?

Flights via Denver (DEN) offer the lowest average round-trip price of $309.

Which airport is the most popular layover for flights between St. Louis and Las Vegas?

Denver (DEN) was the most common stop: 55% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Lambert-St Louis to Las Vegas Harry Reid Intl?

Frontier, United Airlines, and Spirit Airlines are the most popular carriers operating from Lambert-St Louis to Las Vegas Harry Reid Intl

How many flights depart from St. Louis to Las Vegas on average per week?

The number of flights available between St. Louis and Las Vegas is 55 per week as of September 2025. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.

Which layover airport has the shortest connection time from St. Louis to Las Vegas?

San Francisco (SFO) has the shortest average layover time for this route: 1h 05m.

What airlines fly to Las Vegas?

Frontier, Southwest and American Airlines are the top three most popular airlines that fly to Las Vegas from St. Louis according to our data. Frontier is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 8 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

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?

As of September 2025, there are 8 operators available to choose from 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.

$44 Cheap Flights from St. Louis to Las Vegas in 2025/26

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Find the cheapest flights from St. Louis to Las Vegas

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:51 pm - 6:30 pmSTL-LAS

3h 39mnonstop

12:59 am - 9:07 amLAS-STL

6h 08m1 stop

$137Frontier

Find Deal

Sat, Nov 1 - Wed, Nov 5

4:00 pm - 9:23 pmSTL-LAS

7h 23m1 stop

12:59 am - 9:07 amLAS-STL

6h 08m1 stop

$139Frontier

Find Deal

Mon, Oct 6 - Mon, Oct 6

7:52 pm - 6:55 pmSTL-LAS

25h 03m1 stop

9:14 am - 9:07 amLAS-STL

21h 53m1 stop

$141Frontier

Find Deal

Tue, Oct 14 - Tue, Oct 21

12:09 pm - 10:12 pmSTL-LAS

12h 03m1 stop

8:48 pm - 9:07 amLAS-STL

10h 19m1 stop

$142Frontier

Find Deal

Fri, Nov 7 - Mon, Nov 10

7:52 pm - 11:29 pmSTL-LAS

5h 37m1 stop

11:03 pm - 10:16 amLAS-STL

9h 13m1 stop

$143Frontier

Find Deal

Wed, Oct 22 - Thu, Oct 23

12:09 pm - 10:12 pmSTL-LAS

12h 03m1 stop

8:48 pm - 9:07 amLAS-STL

10h 19m1 stop

$144Frontier

Find Deal

Mon, Nov 3 - Mon, Nov 10

7:55 pm - 8:02 amSTL-LAS

14h 07m1 stop

4:10 pm - 9:06 amLAS-STL

14h 56m1 stop

$145Frontier

Find Deal

Sat, Sep 27 - Sat, Oct 4

7:43 pm - 11:45 pmSTL-LAS

6h 02m1 stop

12:59 am - 10:02 amLAS-STL

7h 03m1 stop

$147Frontier

Find Deal

Wed, Dec 3 - Fri, Dec 5

1:41 pm - 9:35 amSTL-LAS

21h 54m1 stop

10:30 am - 3:56 pmLAS-STL

3h 26mnonstop

$149Frontier

Find Deal

Sun, Oct 19 - Sat, Oct 25

7:55 pm - 7:40 amSTL-LAS

13h 45m2 stops

12:59 am - 9:07 amLAS-STL

6h 08m1 stop

$192Multiple Airlines

Find Deal

Fri, Oct 3 - Mon, Oct 6

Frontier flights from St. Louis to Las Vegas

Our best Frontier deals on St. Louis to Las Vegas flight tickets

Frontier

Nov 1

STL4:51 pmLambert-St Louis

3h 39m

LAS6:30 pmLas Vegas Harry Reid Intl

Nov 5

LAS12:59 amLas Vegas Harry Reid Intl

6h 08m

1 stop

STL9:07 amLambert-St Louis

$137

Find similar

Frontier

Oct 6

STL4:00 pmLambert-St Louis

7h 23m

1 stop

LAS9:23 pmLas Vegas Harry Reid Intl

Oct 6

LAS12:59 amLas Vegas Harry Reid Intl

6h 08m

1 stop

STL9:07 amLambert-St Louis

$139

Find similar

Frontier

Oct 14

STL7:52 pmLambert-St Louis

25h 03m

1 stop

LAS6:55 pmLas Vegas Harry Reid Intl

Oct 21

LAS9:14 amLas Vegas Harry Reid Intl

21h 53m

1 stop

STL9:07 amLambert-St Louis

$141

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 11/1

4:51 pm-6:30 pm

Nonstop3h 39m

Las Vegas Harry Reid Intl

Wed 11/5

12:59 am-9:07 am

1 stop6h 08m

$137

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 10/6

4:00 pm-9:23 pm

1 stop7h 23m

Las Vegas Harry Reid Intl

Mon 10/6

12:59 am-9:07 am

1 stop6h 08m

$139

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 10/14

7:52 pm-6:55 pm

1 stop25h 03m

Las Vegas Harry Reid Intl

Tue 10/21

9:14 am-9:07 am

1 stop21h 53m

$141

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 11/7

12:09 pm-10:12 pm

1 stop12h 03m

Las Vegas Harry Reid Intl

Mon 11/10

8:48 pm-9:07 am

1 stop10h 19m

$142

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 10/22

7:52 pm-11:29 pm

1 stop5h 37m

Las Vegas Harry Reid Intl

Thu 10/23

11:03 pm-10:16 am

1 stop9h 13m

$143

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 11/3

12:09 pm-10:12 pm

1 stop12h 03m

Las Vegas Harry Reid Intl

Mon 11/10

8:48 pm-9:07 am

1 stop10h 19m

$144

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 9/27

7:55 pm-8:02 am

1 stop14h 07m

Las Vegas Harry Reid Intl

Sat 10/4

4:10 pm-9:06 am

1 stop14h 56m

$145

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 12/3

7:43 pm-11:45 pm

1 stop6h 02m

Las Vegas Harry Reid Intl

Fri 12/5

12:59 am-10:02 am

1 stop7h 03m

$147

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 10/19

1:41 pm-9:35 am

1 stop21h 54m

Las Vegas Harry Reid Intl

Sat 10/25

10:30 am-3:56 pm

Nonstop3h 26m

$149

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 10/3

7:55 pm-7:40 am

2 stops13h 45m

Las Vegas Harry Reid Intl

Mon 10/6

12:59 am-9:07 am

1 stop6h 08m

$192

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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

Prices

Airlines

Layovers

Other information

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 November is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $272.

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 $244. Flights from St. Louis to Las Vegas on a Wednesday will generally be more expensive and average around $401. 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 $299 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 $260 on momondo.

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

There is only 1 cabin class 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.

Can stopping save me money on St. Louis to Las Vegas flights?

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

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

As of September 2025, prices for St. Louis to Las Vegas flights are approximately 16% cheaper 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	$123
Fastest flight time	3h 30m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Las Vegas	1 airport

The best one-way flight to Las Vegas from St. Louis in the past 72 hours is $123. The best round-trip flight deal from St. Louis to Las Vegas found on momondo in the last 72 hours is $176.

The fastest flight from St. Louis to Las Vegas takes 3h 30m

Direct flights go from St. Louis to Las Vegas on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Frontier.

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 37m 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?
As of September 2025, there are 8 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Las Vegas is Boeing 737-800 Passenger/BBJ2 (winglets), representing 30.23% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 26.91%, Airbus A320neo at 24.24%, and Boeing 737-700 Passenger/BBJ1 (winglets) at 6.76%.
What is the most popular airline from St. Louis to Las Vegas?
Based on momondo bookings for flights between St. Louis and Las Vegas, the leading airline is Frontier, making up 62% of the total bookings. Other popular airlines include Southwest with 28%, American Airlines with 5%, and United Airlines with 2%.

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 Airlines	PriceFrom $93	Free Cancellation	Rating 6.3 8,023 reviews	Search Spirit Airlines flights
Allegiant Air	PriceFrom $104	Free Cancellation	Rating 7.2 699 reviews	Search Allegiant Air flights
Frontier	PriceFrom $109	Free Cancellation	Rating 5.8 3,173 reviews	Search Frontier flights
Delta	PriceFrom $171	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
American Airlines	PriceFrom $194	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights
Southwest	PriceFrom $273	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $342	Free Cancellation	Rating 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 $472, but momondo users have found Southwest deals from St. Louis to Las Vegas from as low as $273 round-trip. Southwest has been scored 8.0/10 in 4,242 reviews.
Frontier Flights From St. Louis to Las Vegas
Another popular option for St. Louis to Las Vegas flights is Frontier (5.8/10, 3,173 ratings). Frontier flies from St. Louis to Las Vegas around 5 times per week, with deals starting from $109 round-trip and rising to an average price of around $242.

Laughlin

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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.

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Cheap flights from St. Louis to Las Vegas from $44

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 10/6. 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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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 November is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $272.

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

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

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?

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

There is only 1 cabin class 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.

Can stopping save me money on St. Louis to Las Vegas flights?

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

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

As of September 2025, prices for St. Louis to Las Vegas flights are approximately 16% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to Las Vegas Harry Reid Intl?

Frontier, United Airlines, and Spirit Airlines are the most popular carriers operating from Lambert-St Louis to Las Vegas Harry Reid Intl

What airlines fly to Las Vegas?

Which airport is the most popular layover for flights between St. Louis and Las Vegas?

Denver (DEN) was the most common stop: 55% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Las Vegas?

Flights via Denver (DEN) offer the lowest average round-trip price of $309.

Which layover airport has the shortest travel time from St. Louis to Las Vegas?

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 24m.

Which layover airport has the shortest connection time from St. Louis to Las Vegas?

San Francisco (SFO) has the shortest average layover time for this route: 1h 05m.

How many flights depart from St. Louis to Las Vegas on average per day?

7 flights are operational daily from St. Louis to Las Vegas as of September 2025. The most popular departure time for this route is 2:00PM, with 44% of flights per day taking off in the afternoon.

How many flights depart from St. Louis to Las Vegas on average per week?

The number of flights available between St. Louis and Las Vegas is 55 per week as of September 2025. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.

When to book flights from St. Louis to Las Vegas

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

Fastest flight time

Direct flights

Airports in Las Vegas

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

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

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?

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

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

Southwest Flights From St. Louis to Las Vegas

Frontier Flights From St. Louis to Las Vegas

Traveling to a place near Las Vegas?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Las Vegas?

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

How can momondo help me find flights 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?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Nevada