How popular is this St. Louis to Las Vegas flight route?

This flight path from Lambert-St Louis to Las Vegas Harry Reid Intl was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What are the cheapest airlines flying from St. Louis to Las Vegas round-trip?

Cheapflights users have booked flights from St. Louis to Las Vegas round-trip from £220. Other airlines that can offer you cheap pricing are Southwest, from £230, and Alaska Airlines, from £273.

What are the cheapest airlines to fly from St. Louis to Las Vegas one-way?

The cheapet airlines for a one-way flight from St. Louis to Las Vegas are Sun Country Air (£97), Southwest (£103), and Delta (£110).

How far in advance should I book a flight from St. Louis to Las Vegas?

To save on the cost of your flight from St. Louis to Las Vegas, book at least 21 days before your planned departure. Booking around this time can save you about 46% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £141 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £193.

What is the cheapest month to fly from St. Louis to Las Vegas?

August is one of the best times of the year to fly to Las Vegas from St. Louis. Prices for August average £196 per person but you can even find prices for as low as £60. The most expensive prices can be found in the month of March. Opting for a August flight can save you 32% on your journey compared to booking in March

Can I find deals for flights from St. Louis to Las Vegas that include hotel bookings?

Yes. In addition to deals on St. Louis to Las Vegas flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from St. Louis to Las Vegas?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Las Vegas.

Can I find deals for business class flights from St. Louis to Las Vegas?

Yes. Cheapflights offers flight deals from St. Louis to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£97+ Flights from St. Louis to Las Vegas

Cheap flight deals from St. Louis to Las Vegas

Round-trip from	£220
One-way from	£97
Popular in	March
Cheapest in	August
Average price	£209

Delta
11/5-17/5
2 total stops
12h 04m total
St. Louis to Las Vegas

Search Deals

Sun Country Air
20/7
1 total stop
18h 37m total
St. Louis to Las Vegas

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (£11 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from St. Louis to Las Vegas

Cheapest flights from St. Louis to Las Vegas
Explore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Sat 17/520:45STL - LAS

Nonstop3h 30mSouthwest

Mon 19/505:00LAS - STL

Nonstop3h 05mSouthwest

Deal found 17/4£205

Sun 11/511:32STL - LAS

1 stop6h 13mDelta

Tue 20/500:54LAS - STL

1 stop7h 53mDelta

Deal found 17/4£220

Mon 15/906:30STL - LAS

1 stop8h 40mAlaska Airlines

Thu 18/907:00LAS - STL

2 stops14h 59mAlaska Airlines

Deal found 16/4£273

Thu 26/617:41STL - LAS

1 stop6h 46mUnited Airlines

Wed 2/709:46LAS - STL

1 stop4h 45mUnited Airlines

Deal found 17/4£279

Fri 25/714:27STL - LAS

Nonstop3h 36mFrontier

Tue 29/700:59LAS - STL

1 stop6h 12mFrontier

Deal found 17/4£290

Sat 1/1107:00STL - LAS

1 stop8h 01mHawaiian Airlines

Thu 6/1112:00LAS - STL

1 stop9h 56mHawaiian Airlines

Deal found 17/4£343

Best flights from St. Louis to Las Vegas
Discover carefully curated flight deals from St. Louis to Las Vegas that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 April 2025.

Sun 11/507:30STL - LAS

1 stop6h 29mDelta

Sat 17/509:35LAS - STL

1 stop5h 35mDelta

Deal found 17/4£220

Sat 10/505:50STL - LAS

Nonstop3h 35mSouthwest

Sun 11/520:25LAS - STL

Nonstop3h 10mSouthwest

Deal found 17/4£230

Mon 15/906:30STL - LAS

1 stop8h 40mAlaska Airlines

Thu 18/907:00LAS - STL

2 stops14h 59mAlaska Airlines

Deal found 16/4£273

Thu 26/617:41STL - LAS

1 stop6h 46mUnited Airlines

Wed 2/709:46LAS - STL

1 stop4h 45mUnited Airlines

Deal found 17/4£279

Fri 25/714:27STL - LAS

Nonstop3h 36mFrontier

Tue 29/700:59LAS - STL

1 stop6h 12mFrontier

Deal found 17/4£290

Last-minute flights from St. Louis to Las Vegas
Discover last-minute flight deals from St. Louis to Las Vegas. Data last updated 18 April 2025 and is based on user searches.

Tue 22/408:00STL - LAS

2 stops11h 14mMultiple Airlines

Tue 29/414:00LAS - STL

1 stop7h 59mMultiple Airlines

Deal found 17/4£486

Wed 23/413:43STL - LAS

1 stop5h 31mUnited Airlines

Fri 25/400:59LAS - STL

2 stops9h 21mUnited Airlines

Deal found 16/4£427

Thu 24/420:55STL - LAS

Nonstop3h 30mSouthwest

Sat 26/405:05LAS - STL

Nonstop3h 05mSouthwest

Deal found 18/4£310

Thu 24/415:08STL - LAS

1 stop10h 51mAlaska Airlines

Thu 1/510:30LAS - STL

2 stops11h 29mAlaska Airlines

Deal found 17/4£313

Fri 25/419:15STL - LAS

1 stop6h 10mDelta

Mon 28/417:25LAS - STL

1 stop5h 17mDelta

Deal found 18/4£325

Sat 10/506:30STL - LAS

2 stops12h 37mAlaska Airlines

Sat 17/514:00LAS - STL

1 stop8h 04mAlaska Airlines

Deal found 17/4£281

Sun 11/511:32STL - LAS

1 stop6h 13mDelta

Tue 20/500:54LAS - STL

1 stop7h 53mDelta

Deal found 17/4£220

Sat 17/520:45STL - LAS

Nonstop3h 30mSouthwest

Mon 19/505:00LAS - STL

Nonstop3h 05mSouthwest

Deal found 17/4£205

Tue 27/505:00STL - LAS

1 stop6h 33mUnited Airlines

Sat 31/516:32LAS - STL

1 stop5h 27mUnited Airlines

Deal found 17/4£295

One-way flights from St. Louis to Las Vegas
Search for one-way flight options from St. Louis to Las Vegas. Find affordable one-way fares based on user searches. Data last updated 18 April 2025.

Sun 20/706:05STL - LAS

1 stop18h 37mSun Country Air

Deal found 17/4£97

Sat 17/520:45STL - LAS

Nonstop3h 30mSouthwest

Deal found 16/4£103

Mon 19/515:50STL - LAS

1 stop5h 47mDelta

Deal found 16/4£110

Wed 1/1006:30STL - LAS

2 stops13h 48mAlaska Airlines

Deal found 18/4£145

Wed 21/508:48STL - LAS

2 stops11h 03mUnited Airlines

Deal found 18/4£169

Wed 23/415:08STL - LAS

1 stop7h 52mHawaiian Airlines

Deal found 18/4£279

Cheapflights Fare Finder

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

Sat 17/5

20:45-22:15

Nonstop3h 30m

Las Vegas Harry Reid Intl

Mon 19/5

05:00-10:05

Nonstop3h 05m

£205

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 11/5

11:32-15:45

1 stop6h 13m

Las Vegas Harry Reid Intl

Tue 20/5

00:54-10:47

1 stop7h 53m

£220

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 15/9

06:30-13:10

1 stop8h 40m

Las Vegas Harry Reid Intl

Thu 18/9

07:00-23:59

2 stops14h 59m

£273

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 26/6

17:41-22:27

1 stop6h 46m

Las Vegas Harry Reid Intl

Wed 2/7

09:46-16:31

1 stop4h 45m

£279

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 25/7

14:27-16:03

Nonstop3h 36m

Las Vegas Harry Reid Intl

Tue 29/7

00:59-09:11

1 stop6h 12m

£290

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 20/7

06:05-22:42

1 stop18h 37m

£97

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 17/5

20:45-22:15

Nonstop3h 30m

£103

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 19/5

15:50-19:37

1 stop5h 47m

£110

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 1/10

06:30-18:18

2 stops13h 48m

£145

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 21/5

08:48-17:51

2 stops11h 03m

£169

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 11 results

Best time to book a flight from St. Louis to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from St. Louis with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Las Vegas

How far ahead should I book a flight from St. Louis to Las Vegas?

The price you pay for your flight from St. Louis to Las Vegas may vary depending on when you book. For the best chance of a lower fare, look to book 20 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Las Vegas?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £689). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £1,020). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to LAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Las Vegas as you normally would.

Rainfall in Las Vegas by month

In terms of precipitation, rainfall in Las Vegas ranges from 3.0 - 20.0 inches per month. February is typically the wettest month, when rainfall can reach 20.0 mm. May is typically the driest time to visit Las Vegas when rainfall is around 3.0 mm.

Temperature in Las Vegas by month

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 34.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 9.0 C).

Reviews of airlines servicing Las Vegas

Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from St. Louis to Las Vegas by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very Good

9,887 reviews

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very Good

4,280 reviews

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very Good

7,917 reviews

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Hawaiian Airlines

7.9

Good

2,385 reviews

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,667 reviews

Alaska Airlines

8.0

Very Good

9,887 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

How popular is this St. Louis to Las Vegas flight route?
This flight path from Lambert-St Louis to Las Vegas Harry Reid Intl was viewed by 6 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from St. Louis to Las Vegas round-trip?
Cheapflights users have booked flights from St. Louis to Las Vegas round-trip from £220. Other airlines that can offer you cheap pricing are Southwest, from £230, and Alaska Airlines, from £273.
What are the cheapest airlines to fly from St. Louis to Las Vegas one-way?
The cheapet airlines for a one-way flight from St. Louis to Las Vegas are Sun Country Air (£97), Southwest (£103), and Delta (£110).
Can I find deals for flights from St. Louis to Las Vegas that include hotel bookings?
Yes. In addition to deals on St. Louis to Las Vegas flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from St. Louis to Las Vegas?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Las Vegas.
Can I find deals for business class flights from St. Louis to Las Vegas?
Yes. Cheapflights offers flight deals from St. Louis to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Las Vegas?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £689). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £1,020). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. Louis to Las Vegas. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Las Vegas?

Cheapflights helps you find that perfect flight to Las Vegas from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis to Las Vegas with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from St. Louis to Las Vegas flexibly with Cheapflights today.

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Cheap flights from St. Louis to Las Vegas from £97

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St. Louis to Las Vegas

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Las Vegas

Cheapest flights from St. Louis to Las VegasExplore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Explore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Best time to book a flight from St. Louis to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Las Vegas

How far ahead should I book a flight from St. Louis to Las Vegas?

Use this chart to determine the optimal time to book a return flight from St. Louis to Las Vegas. Price data was last updated on 11 April 2025.

What is the cheapest month to book a flight from St. Louis to Las Vegas?

What is the cheapest time of day to fly from STL to LAS?

Find hourly flight availability from St. Louis to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 April 2025.

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

Reviews of airlines servicing Las Vegas

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How popular is this St. Louis to Las Vegas flight route?

What are the cheapest airlines flying from St. Louis to Las Vegas round-trip?

What are the cheapest airlines to fly from St. Louis to Las Vegas one-way?

Can I find deals for flights from St. Louis to Las Vegas that include hotel bookings?

How can I find direct flights from St. Louis to Las Vegas?

Can I find deals for business class flights from St. Louis to Las Vegas?

What is the cheapest month to book a flight from St. Louis to Las Vegas?

Travelling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Las Vegas by adding a car hire and/or hotel booking to your travel itinerary.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Las Vegas?

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Las Vegas?

Can Cheapflights find flights from St. Louis to Las Vegas with no change fees?

Can Cheapflights notify me if prices for flights from St. Louis to Las Vegas become cheaper?

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Cheapest flights from St. Louis to Las Vegas
Explore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.