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Cheap flights from St. Louis to Las Vegas from £83

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 24/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
12 Apr — 19 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 13 March 2026.

Sun 24/517:33
STL
-
LAS
1 stop8h 25m
Alaska Airlines
Tue 2/607:10
LAS
-
STL
1 stop7h 27m
Alaska Airlines
Deal found 9/3£189
Fri 12/613:13
STL
-
LAS
1 stop6h 44m
United Airlines
Wed 17/623:30
LAS
-
STL
1 stop7h 11m
United Airlines
Deal found 8/3£203
Tue 26/519:59
STL
-
LAS
1 stop5h 44m
Delta
Fri 29/500:45
LAS
-
STL
1 stop7h 47m
Delta
Deal found 9/3£204
Wed 6/514:20
STL
-
LAS
2 stops10h 21m
Delta
Mon 11/517:05
LAS
-
STL
1 stop5h 25m
Delta
Deal found 11/3£206
Tue 21/415:50
STL
-
LAS
1 stop10h 09m
Alaska Airlines
Fri 24/420:54
LAS
-
STL
1 stop25h 05m
Alaska Airlines
Deal found 8/3£215
Sun 19/705:10
STL
-
LAS
1 stop5h 57m
United Airlines
Thu 23/716:25
LAS
-
STL
1 stop5h 32m
United Airlines
Deal found 10/3£218
Wed 24/616:48
STL
-
LAS
1 stop5h 20m
United Airlines
Fri 26/600:36
LAS
-
STL
1 stop6h 05m
United Airlines
Deal found 8/3£218
Thu 4/619:59
STL
-
LAS
1 stop5h 44m
Delta
Wed 10/617:30
LAS
-
STL
1 stop5h 06m
Delta
Deal found 10/3£219
Tue 23/605:10
STL
-
LAS
1 stop5h 57m
United Airlines
Fri 26/600:36
LAS
-
STL
1 stop6h 05m
United Airlines
Deal found 9/3£221
Wed 7/1015:24
STL
-
LAS
1 stop10h 35m
Alaska Airlines
Wed 14/1012:00
LAS
-
STL
1 stop9h 59m
Alaska Airlines
Deal found 8/3£227
Fri 26/618:59
STL
-
LAS
1 stop7h 29m
Delta
Fri 3/717:30
LAS
-
STL
1 stop5h 06m
Delta
Deal found 9/3£229

Find 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 March 2026.

Round-trip from

£189

One-way from

£83

Popular in

June

Cheapest in

January

Average price

£233
Alaska Airlines
  • Alaska Airlines
  • 24/5-2/6
  • 2 total stops
  • 15h 52m total
  • St. Louis to Las Vegas
Search Deals
Frontier
  • Frontier
  • 24/3
  • 1 total stop
  • 13h 21m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 2026.
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

Cheapest return flight

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 25/5

05:10-09:07

1 stop5h 57m

Las Vegas Harry Reid Intl

Thu 28/5

06:00-14:16

1 stop6h 16m

£203

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 30/6

06:30-12:43

1 stop8h 13m

Las Vegas Harry Reid Intl

Thu 9/7

17:30-00:36

1 stop5h 06m

£248

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 17/7

19:23-00:46

1 stop7h 23m

Las Vegas Harry Reid Intl

Mon 20/7

23:30-08:41

1 stop7h 11m

£262

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 25/7

13:13-17:57

1 stop6h 44m

Las Vegas Harry Reid Intl

Sat 25/7

00:36-10:34

1 stop7h 58m

£267

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 22/6

17:41-23:53

1 stop8h 12m

Las Vegas Harry Reid Intl

Fri 26/6

23:30-08:41

1 stop7h 11m

£278

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 6/6

11:22-17:14

1 stop7h 52m

Las Vegas Harry Reid Intl

Tue 9/6

06:25-14:31

1 stop6h 06m

£278

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 2/7

05:10-09:07

1 stop5h 57m

Las Vegas Harry Reid Intl

Sun 5/7

23:30-08:41

1 stop7h 11m

£279

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 1/5

17:59-22:05

1 stop6h 06m

Las Vegas Harry Reid Intl

Sat 2/5

00:36-09:30

1 stop6h 54m

£279
Fastest return journey

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 8/4

21:00-22:30

Nonstop3h 30m

Las Vegas Harry Reid Intl

Wed 15/4

06:50-12:00

Nonstop3h 10m

£282

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 2/6

16:48-20:08

1 stop5h 20m

Las Vegas Harry Reid Intl

Tue 9/6

00:36-14:16

2 stops11h 40m

£283

Flights are sorted by cheapest return flights first.

Deals found on 8/3

Showing 1-10 of 24 resultsSorted by cheapest first
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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 6 March 2026.

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 86 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, February is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £51). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £144). 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 March 2026.

It’s optimal to fly from St. Louis to Las Vegas in the afternoon. By choosing this option you can save up to 60% on the cost of your flight, compared to a flight in the evening.

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 1 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 United Airlines and Delta fly from St. Louis to Las Vegas in about 8h 12m. The time it takes to get you to your destination can typically vary by up to 01m. Airlines will cover a distance of 1367 mi. This flight may include one or multiple stops.

  • 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: Volaris (100%), Southwest (78%), Frontier( 75%).

  • 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, February is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £51). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of £144). 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?

Book flights to Las Vegas if you plan to visit one of these locations
Furnace Creek
Henderson
Kingman

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

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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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Not ready to book yet? You can track prices for flights from St. Louis to Las Vegas on Cheapflights with our Price Alert feature and get notified when better prices are available.

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