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Cheap flights from St. Louis to Las Vegas from £71

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
11 Jul — 18 Jul1
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 11 June 2026.

Mon 3/815:20
STL
-
LAS
1 stop5h 25m
Southwest
Sat 15/806:10
LAS
-
STL
2 stops7h 15m
Southwest
Deal found 11/6£149
Sun 9/808:25
STL
-
LAS
2 stops6h 25m
Southwest
Thu 13/811:15
LAS
-
STL
1 stop6h 05m
Southwest
Deal found 10/6£152
Fri 28/808:25
STL
-
LAS
2 stops7h 15m
Southwest
Mon 31/811:25
LAS
-
STL
2 stops6h 45m
Southwest
Deal found 9/6£153
Sun 23/808:25
STL
-
LAS
2 stops6h 25m
Southwest
Sat 29/810:40
LAS
-
STL
2 stops7h 05m
Southwest
Deal found 10/6£156
Wed 1/708:49
STL
-
LAS
1 stop6h 04m
Delta
Wed 8/717:00
LAS
-
STL
1 stop5h 41m
Delta
Deal found 8/6£162
Sun 30/820:45
STL
-
LAS
Nonstop3h 30m
Southwest
Wed 2/912:35
LAS
-
STL
Nonstop3h 15m
Southwest
Deal found 9/6£185
Sun 26/705:10
STL
-
LAS
1 stop5h 57m
United Airlines
Wed 29/723:59
LAS
-
STL
1 stop6h 40m
United Airlines
Deal found 7/6£194
Wed 22/713:50
STL
-
LAS
2 stops6h 35m
Southwest
Tue 28/711:50
LAS
-
STL
1 stop4h 35m
Southwest
Deal found 6/6£205
Wed 22/718:40
STL
-
LAS
1 stop5h 25m
Southwest
Fri 24/718:35
LAS
-
STL
1 stop5h 20m
Southwest
Deal found 8/6£208
Wed 29/713:50
STL
-
LAS
2 stops6h 35m
Southwest
Mon 3/818:35
LAS
-
STL
1 stop5h 20m
Southwest
Deal found 8/6£209

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 11 June 2026.

Round-trip from

£149

One-way from

£71

Popular in

June

Cheapest in

January

Average price

£281

Good one-way deal

£160 or less
Southwest
  • Southwest
  • 28/8-31/8
  • 3 total stops
  • 13h 25m total
  • St. Louis to Las Vegas
Search Deals
Southwest
  • Southwest
  • 10/7
  • 1 total stop
  • 5h 35m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£27 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 June 2026
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Las Vegas Harry Reid Intl.
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 11 June 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

Fri 28/8

08:25-13:40

2 stops7h 15m

Las Vegas Harry Reid Intl

Mon 31/8

09:45-17:55

1 stop6h 10m

£149

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sun 30/8

08:25-12:50

2 stops6h 25m

Las Vegas Harry Reid Intl

Sun 30/8

00:55-09:20

1 stop6h 25m

£152

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 1/7

06:21-10:35

1 stop6h 14m

Las Vegas Harry Reid Intl

Fri 3/7

06:19-15:16

1 stop6h 57m

£162

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 8/7

13:38-18:50

1 stop7h 12m

Las Vegas Harry Reid Intl

Wed 15/7

16:25-23:57

1 stop5h 32m

£194

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 11/8

07:00-12:00

2 stops7h 00m

Las Vegas Harry Reid Intl

Wed 12/8

00:55-09:20

1 stop6h 25m

£212

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 11/7

10:20-14:45

1 stop6h 25m

Las Vegas Harry Reid Intl

Sat 18/7

00:59-10:07

1 stop7h 08m

£220
Fastest return journey

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 3/8

15:20-18:45

1 stop5h 25m

Las Vegas Harry Reid Intl

Sat 8/8

10:40-19:45

2 stops7h 05m

£224

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 27/8

05:10-13:59

2 stops10h 49m

Las Vegas Harry Reid Intl

Sat 29/8

00:59-10:10

1 stop7h 11m

£233

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Sat 25/7

19:23-00:46

1 stop7h 23m

Las Vegas Harry Reid Intl

Tue 28/7

06:00-23:36

2 stops15h 36m

£233

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 27/7

17:30-21:15

1 stop5h 45m

Las Vegas Harry Reid Intl

Wed 29/7

08:55-17:45

2 stops6h 50m

£250

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 22 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 39 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 £189). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of £281). 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 11 June 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.

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

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 Southwest and Delta fly from St. Louis to Las Vegas in about 6h 14m. The time it takes to get you to your destination can typically vary by up to 1h 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 (90%), Southwest (78%), Frontier( 73%).

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

    Looking at all options, your cheapest flight can be booked for £93. While the most popular route (Lambert-St Louis - Las Vegas Harry Reid Intl) can be booked for £350 on average, our data indicates £174 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, January is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of £189). Flying from St. Louis to Las Vegas in June is currently the most expensive (average of £281). 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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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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