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Cheap flights from St. Louis to Las Vegas from £56

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 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
9 Nov — 16 Nov1
1 adult
1 adult, Economy

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 10 October 2025.

Round-trip from

£206

One-way from

£56

Popular in

June

Cheapest in

February

Average price

£207

Good one-way deal

£74 or less
Delta
  • Delta
  • 10/12-13/12
  • 4 total stops
  • 22h 30m total
  • St. Louis to Las Vegas
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Frontier
  • Frontier
  • 24/1
  • 1 total stop
  • 14h 55m total
  • St. Louis to Las Vegas
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Highest demand for flights based on searches. 8% potential increase in price (£14 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Price to beat on a one-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl.
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Find flight deals from St. Louis to Las Vegas

Enter your travel dates to find the best prices.

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 10 October 2025.

Wed 10/1206:00STL - LAS
2 stops10h 45mDelta
Sat 13/1211:05LAS - STL
2 stops11h 45mDelta
Deal found 10/10£206
Mon 10/1119:47STL - LAS
1 stop5h 41mDelta
Wed 12/1106:00LAS - STL
2 stops10h 57mDelta
Deal found 10/10£214
Mon 3/1114:29STL - LAS
2 stops10h 01mDelta
Wed 5/1106:00LAS - STL
2 stops10h 45mDelta
Deal found 10/10£218
Thu 25/1210:35STL - LAS
1 stop5h 45mSouthwest
Wed 31/1206:00LAS - STL
1 stop5h 05mSouthwest
Deal found 10/10£219
Thu 25/1207:20STL - LAS
1 stop6h 47mDelta
Tue 30/1206:15LAS - STL
1 stop5h 08mDelta
Deal found 10/10£223
Thu 18/1209:50STL - LAS
2 stops6h 35mSouthwest
Sun 21/1205:50LAS - STL
1 stop4h 45mSouthwest
Deal found 9/10£227
Sat 8/1107:00STL - LAS
1 stop28h 45mAlaska Airlines
Fri 14/1120:50LAS - STL
2 stops16h 28mAlaska Airlines
Deal found 8/10£235
Sat 6/1213:25STL - LAS
1 stop5h 35mSouthwest
Wed 10/1218:00LAS - STL
Nonstop3h 10mSouthwest
Deal found 9/10£238
Wed 19/1107:00STL - LAS
1 stop9h 47mAlaska Airlines
Sat 22/1110:21LAS - STL
1 stop11h 33mAlaska Airlines
Deal found 9/10£242
Mon 10/1107:00STL - LAS
1 stop14h 15mAlaska Airlines
Fri 14/1120:50LAS - STL
2 stops16h 28mAlaska Airlines
Deal found 8/10£243

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 10 October 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

Fri 14/11

19:47-23:28

1 stop5h 41m

Las Vegas Harry Reid Intl

Mon 17/11

17:20-00:46

1 stop5h 26m

£223

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 10/2

14:50-21:00

1 stop8h 10m

Las Vegas Harry Reid Intl

Thu 19/2

07:50-23:56

1 stop14h 06m

£234

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 21/2

07:00-23:51

1 stop18h 51m

Las Vegas Harry Reid Intl

Tue 24/2

06:00-23:56

2 stops15h 56m

£246

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 15/2

14:55-22:20

1 stop9h 25m

Las Vegas Harry Reid Intl

Thu 19/2

09:30-23:56

1 stop12h 26m

£249

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/2

07:00-17:45

2 stops12h 45m

Las Vegas Harry Reid Intl

Wed 18/2

17:59-08:54

2 stops12h 55m

£250

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/2

07:00-17:45

2 stops12h 45m

Las Vegas Harry Reid Intl

Sat 14/2

06:25-16:50

1 stop8h 25m

£258

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 10/2

12:10-20:41

2 stops10h 31m

Las Vegas Harry Reid Intl

Fri 20/2

06:00-21:42

2 stops13h 42m

£259

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 27/11

06:00-16:55

2 stops12h 55m

Las Vegas Harry Reid Intl

Fri 28/11

06:30-16:49

1 stop8h 19m

£275

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 17/12

16:45-21:39

1 stop6h 54m

Las Vegas Harry Reid Intl

Mon 22/12

14:26-22:43

1 stop6h 17m

£279

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 12/12

07:00-09:42

1 stop28h 42m

Las Vegas Harry Reid Intl

Mon 15/12

20:30-14:27

1 stop15h 57m

£283

Flights are sorted by cheapest return flights first.

Deals found on 9/10

Showing 1-10 of 23 results
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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 3 October 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 23 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, March is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £79). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £146). 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 10 October 2025.

It’s optimal to fly from St. Louis to Las Vegas at midday. By choosing this option you can save up to 82% on the cost of your flight, compared to a flight in the afternoon.

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 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from St. Louis to Las Vegas?

    Airlines like Delta and Alaska Airlines fly from St. Louis to Las Vegas in about 5h 41m. The time it takes to get you to your destination can typically vary by up to 2h 29m. Airlines will cover a distance of 1367 mi. This flight may include one or multiple stops.

  • 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 Frontier (£76), Southwest (£108), and Delta (£110).

  • What are the most reliable airlines from St. Louis to Las Vegas?

    Before booking your flight to Las Vegas from St. Louis, check out the most reliable airlines to get you to your destination on time: Southwest (72%), Frontier (72%), Sun Country Air( 0%).

  • What are the cheapest flights from St. Louis to Las Vegas?

    Looking at all options, your cheapest flight can be booked for £74. While the most popular route (Lambert-St Louis - Las Vegas Harry Reid Intl) can be booked for £264 on average, our data indicates £98 when flying from St. Louis to Las Vegas.

  • 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, March is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £79). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £146). 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 Las Vegas?

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