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Cheap flights from St. Louis to Las Vegas from £99

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
26 Aug — 2 Sep1
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 27 July 2026.

Tue 22/906:29
STL
-
LAS
2 stops13h 58m
Alaska Airlines
Wed 23/917:28
LAS
-
STL
2 stops21h 42m
Alaska Airlines
Deal found 23/7£198
Wed 30/906:29
STL
-
LAS
2 stops12h 19m
Alaska Airlines
Tue 6/1007:00
LAS
-
STL
2 stops14h 59m
Alaska Airlines
Deal found 27/7£213
Mon 24/819:36
STL
-
LAS
1 stop17h 11m
Alaska Airlines
Mon 31/819:07
LAS
-
STL
2 stops20h 03m
Alaska Airlines
Deal found 24/7£215
Sun 30/819:36
STL
-
LAS
1 stop17h 11m
Alaska Airlines
Mon 31/819:07
LAS
-
STL
2 stops20h 03m
Alaska Airlines
Deal found 27/7£222
Sat 3/1006:02
STL
-
LAS
2 stops14h 26m
Alaska Airlines
Wed 7/1007:00
LAS
-
STL
2 stops14h 59m
Alaska Airlines
Deal found 23/7£228
Fri 21/807:25
STL
-
LAS
1 stop7h 42m
United Airlines
Sat 22/813:38
LAS
-
STL
1 stop5h 08m
United Airlines
Deal found 27/7£232
Fri 28/819:36
STL
-
LAS
1 stop17h 11m
Alaska Airlines
Mon 31/819:07
LAS
-
STL
2 stops20h 03m
Alaska Airlines
Deal found 25/7£245
Wed 30/914:25
STL
-
LAS
2 stops10h 16m
Delta
Tue 6/1006:00
LAS
-
STL
2 stops9h 34m
Delta
Deal found 23/7£251
Mon 14/915:19
STL
-
LAS
1 stop8h 22m
Alaska Airlines
Thu 17/919:07
LAS
-
STL
2 stops20h 03m
Alaska Airlines
Deal found 24/7£263

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 27 July 2026.

Round-trip from

£198

One-way from

£99

Popular in

June

Cheapest in

January

Average price

£281
Alaska Airlines
  • Alaska Airlines
  • 22/9-23/9
  • 4 total stops
  • 35h 40m total
  • St. Louis to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 30/9
  • 2 total stops
  • 12h 19m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£32 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 July 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 27 July 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

Tue 22/9

06:29-18:27

2 stops13h 58m

Las Vegas Harry Reid Intl

Fri 25/9

19:07-17:10

2 stops20h 03m

£266

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 25/8

06:35-16:48

2 stops12h 13m

Las Vegas Harry Reid Intl

Tue 1/9

17:28-17:10

2 stops21h 42m

£278

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 19/9

17:00-22:17

1 stop7h 17m

Las Vegas Harry Reid Intl

Sat 26/9

10:59-23:16

2 stops10h 17m

£285

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 14/9

14:25-22:41

2 stops10h 16m

Las Vegas Harry Reid Intl

Thu 24/9

06:05-17:37

2 stops9h 32m

£285

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 15/10

14:22-22:40

2 stops10h 18m

Las Vegas Harry Reid Intl

Fri 16/10

00:59-10:38

1 stop7h 39m

£292

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 28/8

08:42-15:58

1 stop9h 16m

Las Vegas Harry Reid Intl

Sun 30/8

06:00-17:59

2 stops9h 59m

£303

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 24/8

13:36-20:04

2 stops8h 28m

Las Vegas Harry Reid Intl

Fri 28/8

06:00-18:39

2 stops10h 39m

£307

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 17/9

15:19-21:41

1 stop8h 22m

Las Vegas Harry Reid Intl

Mon 21/9

19:07-17:10

2 stops20h 03m

£351

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 19/9

06:29-18:27

2 stops13h 58m

Las Vegas Harry Reid Intl

Sat 26/9

14:51-17:10

2 stops24h 19m

£355

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 2/10

15:19-23:17

1 stop9h 58m

Las Vegas Harry Reid Intl

Sat 10/10

08:28-23:59

2 stops13h 31m

£357

Flights are sorted by cheapest return flights first.

Deals found on 25/7

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?

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 30 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 £190). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of £293). 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 27 July 2026.

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.

How much does it cost for a return flight from St. Louis to Las Vegas?

Airfare is typical for this route at the moment.

St. Louis to Las Vegas flights typically cost between £148 and £287 in September.
The cheapest return price found within the last 5 days was £198 on Alaska Airlines (22 Sept–23 Sept).

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 Alaska Airlines, Delta, and United Airlines fly from St. Louis to Las Vegas in about 8h 28m. The time it takes to get you to your destination can typically vary by up to 5h 30m. 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: Southwest (64%), Volaris (59%), Frontier( 58%).

  • 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 £190). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of £293). 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

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