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Cheap flights from St. Louis to Las Vegas from £54

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
18 Jun — 25 Jun1
1 adult

Cheap flight deals from St. Louis to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2025.

Round-trip from

£185

One-way from

£54

Popular in

March

Cheapest in

February

Average price

£248
Southwest
  • Southwest
  • 17/9-18/9
  • Nonstop
  • 6h 40m total
  • St. Louis to Las Vegas
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Spirit Airlines
  • Spirit Airlines
  • 21/9
  • 1 total stop
  • 13h 22m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in June 2025
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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 13 June 2025.

Wed 17/920:45STL - LAS
Nonstop3h 25mSouthwest
Thu 18/917:55LAS - STL
Nonstop3h 15mSouthwest
Deal found 11/6£185
Mon 13/1006:33STL - LAS
1 stop10h 14mAlaska Airlines
Thu 16/1012:25LAS - STL
1 stop9h 34mAlaska Airlines
Deal found 11/6£204
Fri 25/719:29STL - LAS
1 stop6h 05mFrontier
Tue 29/700:59LAS - STL
1 stop6h 12mFrontier
Deal found 12/6£210
Tue 5/819:15STL - LAS
1 stop6h 10mDelta
Wed 6/800:40LAS - STL
1 stop7h 53mDelta
Deal found 13/6£211
Sun 7/1213:30STL - LAS
1 stop5h 19mUnited Airlines
Wed 10/1200:59LAS - STL
1 stop6h 43mUnited Airlines
Deal found 11/6£249
Wed 17/908:50STL - LAS
2 stops9h 28mAmerican Airlines
Fri 19/922:47LAS - STL
1 stop8h 29mAmerican Airlines
Deal found 11/6£316

Cheapflights Fare Finder

Customise 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, Cheapflights users made 858,174 searches. Data last updated 13 June 2025.
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.

Fly from

St. Louis

Fly to

Las Vegas

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 17/9

20:45-22:10

Nonstop3h 25m

Las Vegas Harry Reid Intl

Thu 18/9

17:55-23:10

Nonstop3h 15m

£185

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 13/10

06:33-14:47

1 stop10h 14m

Las Vegas Harry Reid Intl

Thu 16/10

12:25-23:59

1 stop9h 34m

£204

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 25/7

19:29-23:34

1 stop6h 05m

Las Vegas Harry Reid Intl

Tue 29/7

00:59-09:11

1 stop6h 12m

£210

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 5/8

19:15-23:25

1 stop6h 10m

Las Vegas Harry Reid Intl

Wed 6/8

00:40-10:33

1 stop7h 53m

£211

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 7/12

13:30-16:49

1 stop5h 19m

Las Vegas Harry Reid Intl

Wed 10/12

00:59-09:42

1 stop6h 43m

£249

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 17/9

08:50-16:18

2 stops9h 28m

Las Vegas Harry Reid Intl

Fri 19/9

22:47-09:16

1 stop8h 29m

£316

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 21/9

08:44-20:06

1 stop13h 22m

£54

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 3/10

19:52-23:32

1 stop5h 40m

£57

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 20/7

06:05-22:39

1 stop18h 34m

£94

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 20/8

20:45-22:10

Nonstop3h 25m

£95

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 15 results
1
2

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?

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 9 June 2025.

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?

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 13 June 2025.

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

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

Plan your trip to Las Vegas by taking into account the average temperature totals 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 insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated 13 June 2025.
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
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very Good
4,287 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very Good
7,950 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,496 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    This flight path from Lambert-St Louis to Las Vegas Harry Reid Intl was viewed by 4 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 £185. Other airlines that can offer you cheap pricing are Alaska Airlines, from £204, and Frontier, from £210. Southwest is priced at 12% lower than the current average price of a flight leaving 3 months from now.

  • 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 Spirit Airlines (£54), Frontier (£57), and Sun Country Air (£94).

  • 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

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Kingman
Henderson
Paradise

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