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Cheap flights from St. Louis to Las Vegas from £87

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
11 Jan — 18 Jan1
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 12 December 2025.

Wed 31/1217:02STL - LAS
1 stop7h 30mUnited Airlines
Thu 1/105:30LAS - STL
1 stop5h 50mUnited Airlines
Deal found 10/12£244
Thu 25/1206:00STL - LAS
1 stop7h 08mUnited Airlines
Thu 1/105:30LAS - STL
1 stop5h 50mUnited Airlines
Deal found 10/12£266
Thu 25/1206:00STL - LAS
1 stop7h 08mUnited Airlines
Sun 28/1207:00LAS - STL
1 stop8h 54mUnited Airlines
Deal found 10/12£296
Tue 23/1206:00STL - LAS
1 stop7h 08mUnited Airlines
Sat 27/1207:00LAS - STL
1 stop7h 27mUnited Airlines
Deal found 11/12£317
Wed 31/1206:05STL - LAS
1 stop7h 16mDelta
Wed 7/109:45LAS - STL
2 stops11h 40mDelta
Deal found 11/12£325
Tue 23/1206:30STL - LAS
2 stops12h 33mUnited Airlines
Tue 30/1200:59LAS - STL
2 stops9h 28mUnited Airlines
Deal found 9/12£333
Wed 24/1214:45STL - LAS
2 stops11h 44mUnited Airlines
Tue 30/1200:59LAS - STL
2 stops11h 27mUnited Airlines
Deal found 10/12£342
Thu 18/1206:15STL - LAS
2 stops11h 58mDelta
Wed 31/1206:15LAS - STL
1 stop5h 08mDelta
Deal found 10/12£347
Wed 17/1214:20STL - LAS
1 stop5h 58mDelta
Wed 24/1212:27LAS - STL
1 stop7h 49mDelta
Deal found 10/12£354
Mon 22/1206:00STL - LAS
1 stop7h 08mUnited Airlines
Thu 25/1209:05LAS - STL
2 stops8h 13mUnited Airlines
Deal found 11/12£358

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 12 December 2025.

Round-trip from

£175

One-way from

£87

Popular in

June

Cheapest in

February

Average price

£208
Alaska Airlines
  • Alaska Airlines
  • 27/1-30/1
  • 2 total stops
  • 21h 56m total
  • St. Louis to Las Vegas
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 10/2
  • 1 total stop
  • 8h 10m total
  • St. Louis to Las Vegas
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 12 December 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

Tue 27/1

14:50-21:00

1 stop8h 10m

Las Vegas Harry Reid Intl

Fri 30/1

07:00-22:46

1 stop13h 46m

£175

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/3

18:04-23:29

1 stop7h 25m

Las Vegas Harry Reid Intl

Sun 15/3

17:00-00:18

1 stop5h 18m

£176

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/2

06:10-11:05

1 stop6h 55m

Las Vegas Harry Reid Intl

Wed 18/2

17:10-00:25

1 stop5h 15m

£176

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 20/2

18:40-23:22

1 stop6h 42m

Las Vegas Harry Reid Intl

Fri 27/2

11:05-23:23

2 stops10h 18m

£182

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 27/1

06:10-15:00

2 stops10h 50m

Las Vegas Harry Reid Intl

Fri 30/1

11:00-23:25

2 stops10h 25m

£190

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 11/2

06:10-11:05

1 stop6h 55m

Las Vegas Harry Reid Intl

Sat 14/2

11:06-23:23

2 stops10h 17m

£194

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 1/4

18:04-23:29

1 stop7h 25m

Las Vegas Harry Reid Intl

Mon 6/4

17:00-00:18

1 stop5h 18m

£199

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 5/3

18:02-22:02

1 stop6h 00m

Las Vegas Harry Reid Intl

Tue 10/3

13:11-20:55

1 stop5h 44m

£205

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 2/1

19:06-23:44

1 stop6h 38m

Las Vegas Harry Reid Intl

Wed 7/1

11:00-23:25

2 stops10h 25m

£212

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Fri 9/1

07:00-16:57

2 stops11h 57m

Las Vegas Harry Reid Intl

Mon 12/1

11:00-23:25

2 stops10h 25m

£214

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 22 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 5 December 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 20 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 12 December 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 Alaska Airlines and Delta fly from St. Louis to Las Vegas in about 7h 25m. The time it takes to get you to your destination can typically vary by up to 45m. Airlines will cover a distance of 1367 mi. This flight may include one or multiple stops.

  • 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?

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

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