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Cheap flights from St. Louis to Las Vegas from £115

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
26 Feb — 5 Mar1
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 21 February 2025.

Round-trip from

£230

One-way from

£115

Popular in

December

Cheapest in

April

Average price

£202
Alaska Airlines
  • Alaska Airlines
  • 1/4-4/4
  • 2 total stops
  • 24h 41m total
  • St. Louis to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 22/4
  • 1 total stop
  • 8h 31m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 21 February 2025.

Tue 1/406:44STL - LAS
1 stop10h 22mAlaska Airlines
Fri 4/407:40LAS - STL
1 stop14h 19mAlaska Airlines
Deal found 21/2£230
Fri 11/419:30STL - LAS
1 stop6h 00mDelta
Mon 14/417:25LAS - STL
1 stop5h 17mDelta
Deal found 20/2£231
Tue 1/418:45STL - LAS
Nonstop3h 40mSouthwest
Fri 4/419:55LAS - STL
Nonstop3h 05mSouthwest
Deal found 21/2£246
Fri 25/721:49STL - LAS
Nonstop3h 39mFrontier
Wed 30/715:36LAS - STL
Nonstop3h 23mFrontier
Deal found 20/2£258
Wed 19/316:29STL - LAS
1 stop7h 27mUnited Airlines
Wed 26/307:11LAS - STL
1 stop12h 23mUnited Airlines
Deal found 20/2£377

Find flights from St. Louis to Las Vegas within your budget

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 21 February 2025.

Fly from

St. Louis

Fly to

Las Vegas

Route

Depart

Return

Price

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 1/4

06:44-15:06

1 stop10h 22m

Las Vegas Harry Reid Intl

Fri 4/4

07:40-23:59

1 stop14h 19m

£230

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 11/4

19:30-23:30

1 stop6h 00m

Las Vegas Harry Reid Intl

Mon 14/4

17:25-00:42

1 stop5h 17m

£231

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 1/4

18:45-20:25

Nonstop3h 40m

Las Vegas Harry Reid Intl

Fri 4/4

19:55-01:00

Nonstop3h 05m

£246

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 25/7

21:49-23:28

Nonstop3h 39m

Las Vegas Harry Reid Intl

Wed 30/7

15:36-20:59

Nonstop3h 23m

£258

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 19/3

16:29-21:56

1 stop7h 27m

Las Vegas Harry Reid Intl

Wed 26/3

07:11-21:34

1 stop12h 23m

£377

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 22/4

06:30-13:01

1 stop8h 31m

£115

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 18/4

19:15-23:25

1 stop6h 10m

£116

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 20/5

18:05-19:40

Nonstop3h 35m

£150

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 19/3

16:30-20:37

1 stop6h 07m

£189

Flights are sorted by cheapest return flights first.

Deals found on 20/2

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.

Travel insights for flights from St. Louis to Las Vegas

Get recent, data-driven insights about flights from St. Louis to Las Vegas including ideal travel times, pricing trends, and more.

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 14 February 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 82 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 21 February 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 21 February 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very Good
4,401 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very Good
9,697 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very Good
8,212 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,759 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Frontier
6.0
Okay
3,354 reviews
Southwest
8.1
Very Good
4,401 reviews
Check prices

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 9 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 £230. Other airlines that can offer you cheap pricing are Delta, from £231, and Southwest, from £246.

  • 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 Alaska Airlines (£115), Delta (£116), and Southwest (£150).

  • 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?

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