What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

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

Denver (DEN) was the most common stop: 77% of momondo users choosing 1-stop flights on this route connected there.

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 64% 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.

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 03m.

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

10 flights are operational daily from St. Louis to Las Vegas as of November 2025. The most popular departure time for this route is 8:00AM, with 42% of flights per day taking off at noon.

Which airline has the best punctuality record on St. Louis to Las Vegas flights?

According to our data, Allegiant Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

How often are flights from St. Louis to Las Vegas delayed?

Historically, on average around 14% of flights between St. Louis and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 134 minutes.

What is the most punctual flight time for St. Louis to Las Vegas flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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

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

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

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $376.

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

Salt Lake City (SLC) has the shortest average layover time for this route: 1h 10m.

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 70 per week as of November 2025. The most frequent departure day is Mon, with 29% of weekly flights leaving on this day.

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 November 2025, there are 7 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.

$70 Cheap Flights from St. Louis to Las Vegas in 2025/26

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5:11 pm - 9:43 amSTL-LAS

18h 32m1 stop

10:45 pm - 10:37 pmLAS-STL

21h 52m1 stop

$142Frontier

Find Deal

Fri, Jan 9 - Mon, Jan 12

4:13 pm - 10:13 amSTL-LAS

20h 00m1 stop

11:00 pm - 11:57 pmLAS-STL

22h 57m1 stop

$144Frontier

Find Deal

Wed, Nov 26 - Sun, Nov 30

7:43 pm - 8:38 amSTL-LAS

14h 55m1 stop

10:58 pm - 9:47 amLAS-STL

8h 49m1 stop

$146Frontier

Find Deal

Wed, Jan 28 - Wed, Feb 4

1:16 pm - 3:02 pmSTL-LAS

3h 46mnonstop

7:00 am - 12:12 pmLAS-STL

3h 12mnonstop

$147Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 8

1:16 pm - 3:02 pmSTL-LAS

3h 46mnonstop

7:00 am - 12:12 pmLAS-STL

3h 12mnonstop

$148Frontier

Find Deal

Thu, Dec 4 - Sun, Dec 7

7:43 pm - 8:38 amSTL-LAS

14h 55m1 stop

10:58 pm - 11:07 amLAS-STL

10h 09m1 stop

$149Frontier

Find Deal

Sat, Dec 6 - Wed, Dec 10

2:50 pm - 9:00 pmSTL-LAS

8h 10m1 stop

11:28 am - 4:49 pmLAS-STL

3h 21mnonstop

$152Multiple Airlines

Find Deal

Tue, Jan 20 - Fri, Jan 23

2:50 pm - 9:00 pmSTL-LAS

8h 10m1 stop

11:28 am - 4:49 pmLAS-STL

3h 21mnonstop

$161Multiple Airlines

Find Deal

Tue, Feb 3 - Thu, Feb 5

7:06 pm - 11:44 pmSTL-LAS

6h 38m1 stop

1:20 pm - 9:35 pmLAS-STL

6h 15m1 stop

$196Delta

Find Deal

Fri, Jan 2 - Wed, Jan 7

7:45 pm - 9:30 pmSTL-LAS

3h 45mnonstop

5:15 pm - 10:20 pmLAS-STL

3h 05mnonstop

$197Southwest

Find Deal

Tue, Jan 20 - Fri, Jan 23

Frontier flights from St. Louis to Las Vegas

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

Frontier

Jan 9

STL5:11 pmLambert-St Louis

18h 32m

1 stop

LAS9:43 amLas Vegas Harry Reid Intl

Jan 12

LAS10:45 pmLas Vegas Harry Reid Intl

21h 52m

1 stop

STL10:37 pmLambert-St Louis

$142

Find similar

Frontier

Nov 24

STL4:13 pmLambert-St Louis

20h 00m

1 stop

LAS10:13 amLas Vegas Harry Reid Intl

Nov 26

LAS11:00 pmLas Vegas Harry Reid Intl

22h 57m

1 stop

STL11:57 pmLambert-St Louis

$144

Find similar

Frontier

Jan 28

STL7:43 pmLambert-St Louis

14h 55m

1 stop

LAS8:38 amLas Vegas Harry Reid Intl

Feb 4

LAS10:58 pmLas Vegas Harry Reid Intl

8h 49m

1 stop

STL9:47 amLambert-St Louis

$146

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 1/9

5:11 pm-9:43 am

1 stop18h 32m

Las Vegas Harry Reid Intl

Mon 1/12

10:45 pm-10:37 pm

1 stop21h 52m

$142

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/26

4:13 pm-10:13 am

1 stop20h 00m

Las Vegas Harry Reid Intl

Sun 11/30

11:00 pm-11:57 pm

1 stop22h 57m

$144

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 1/28

7:43 pm-8:38 am

1 stop14h 55m

Las Vegas Harry Reid Intl

Wed 2/4

10:58 pm-9:47 am

1 stop8h 49m

$146

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 12/4

1:16 pm-3:02 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Mon 12/8

7:00 am-12:12 pm

Nonstop3h 12m

$147

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 12/4

1:16 pm-3:02 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Sun 12/7

7:00 am-12:12 pm

Nonstop3h 12m

$148

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 12/6

7:43 pm-8:38 am

1 stop14h 55m

Las Vegas Harry Reid Intl

Wed 12/10

10:58 pm-11:07 am

1 stop10h 09m

$149

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 1/20

2:50 pm-9:00 pm

1 stop8h 10m

Las Vegas Harry Reid Intl

Fri 1/23

11:28 am-4:49 pm

Nonstop3h 21m

$152

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 2/3

2:50 pm-9:00 pm

1 stop8h 10m

Las Vegas Harry Reid Intl

Thu 2/5

11:28 am-4:49 pm

Nonstop3h 21m

$161

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 1/2

7:06 pm-11:44 pm

1 stop6h 38m

Las Vegas Harry Reid Intl

Wed 1/7

1:20 pm-9:35 pm

1 stop6h 15m

$196

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 1/20

7:45 pm-9:30 pm

Nonstop3h 45m

Las Vegas Harry Reid Intl

Fri 1/23

5:15 pm-10:20 pm

Nonstop3h 05m

$197

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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

Delays

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 $228. The month of October is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $262.

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 $246. Flights from St. Louis to Las Vegas on a Wednesday will generally be more expensive and average around $411. 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 $251. Flights to Las Vegas are more costly in the morning, with an average ticket price of $492. 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 $297 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 $249 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?

You could potentially save up to 4% on your flight if you consider stops on a St. Louis to Las Vegas flight.

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

As of November 2025, prices for St. Louis to Las Vegas flights are approximately 27% 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	$119
Fastest flight time	3h 35m
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 $119. The best round-trip flight deal from St. Louis to Las Vegas found on momondo in the last 72 hours is $251.

The fastest flight from St. Louis to Las Vegas takes 3h 35m

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 45m 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 November 2025, there are 7 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 30.53% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 29.02%, Airbus A320neo at 23.07%, and Airbus A321neo at 8.41%.
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 64% of the total bookings. Other popular airlines include Southwest with 27%, American Airlines with 4%, 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
Frontier	PriceFrom $113	Free Cancellation	Rating 5.8 3,113 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $120	Free Cancellation	Rating 6.3 8,136 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $160	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Delta	PriceFrom $173	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
United Airlines	PriceFrom $234	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $257	Free Cancellation	Rating 8.0 11,267 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $277	Free Cancellation	Rating 8.0 4,235 reviews	Search Southwest flights

Southwest Flights From St. Louis to Las Vegas
Southwest operates around 45 flights from St. Louis to Las Vegas every week. The average price of these flights found in the last 72 hours has been $480, but momondo users have found Southwest deals from St. Louis to Las Vegas from as low as $277 round-trip. Southwest has been scored 8.0/10 in 4,235 reviews.
Frontier Flights From St. Louis to Las Vegas
Another popular option for St. Louis to Las Vegas flights is Frontier (5.8/10, 3,113 ratings). Frontier flies from St. Louis to Las Vegas around 5 times per week, with deals starting from $113 round-trip and rising to an average price of around $247.

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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.

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Cheap flights from St. Louis to Las Vegas from $70

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 12/11. 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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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 $228. The month of October is another great option to travel to Las Vegas, with average flight prices from St. Louis averaging around $262.

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?

You could potentially save up to 4% on your flight if you consider stops on a St. Louis to Las Vegas flight.

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

As of November 2025, prices for St. Louis to Las Vegas flights are approximately 27% more expensive 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, Southwest, and Hawaiian Airlines are the most popular carriers operating from Lambert-St Louis to Las Vegas Harry Reid Intl

What airlines fly to Las Vegas?

How often are flights from St. Louis to Las Vegas delayed?

Historically, on average around 14% of flights between St. Louis and Las Vegas have experienced a delay on any given week. The average delay length over the past 12 months has been 134 minutes.

What is the most punctual flight time for St. Louis to Las Vegas flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on St. Louis to Las Vegas flights?

According to our data, Allegiant Air have had the least number of delays on this route over the last 12 months; with no flights being classified as delayed.

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

Denver (DEN) was the most common stop: 77% 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 Salt Lake City (SLC) offer the lowest average round-trip price of $376.

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 03m.

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

Salt Lake City (SLC) has the shortest average layover time for this route: 1h 10m.

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

10 flights are operational daily from St. Louis to Las Vegas as of November 2025. The most popular departure time for this route is 8:00AM, with 42% of flights per day taking off at noon.

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 70 per week as of November 2025. The most frequent departure day is Mon, with 29% 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?