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Cheap Flights from St Louis (STL) to Las Vegas (LASA)

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Compare St Louis to Las Vegas flight deals

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Flight deals from St Louis to Las Vegas

Looking for a cheap last-minute deal or the best return flight from St Louis to Las Vegas? Find the lowest prices on one-way and return tickets right here.
Las Vegas.£129 per passenger.Departing Sat, 7 Jun, returning Fri, 1 Aug.Return flight with Spirit Airlines and Frontier Airlines.Outbound indirect flight with Spirit Airlines, departs from St Louis on Sat, 7 Jun, arriving in Las Vegas Harry Reid International.Inbound indirect flight with Frontier Airlines, departs from Las Vegas Harry Reid International on Fri, 1 Aug, arriving in St Louis.Price includes taxes and charges.From £129, select.
Sat, 7 JunSTL - LAS with Spirit Airlines
1 stop
Fri, 1 AugLAS - STL with Frontier Airlines
1 stop
from £129
Las Vegas.£133 per passenger.Departing Tue, 27 May, returning Sat, 31 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 27 May, arriving in Las Vegas Harry Reid International.Inbound indirect flight with Frontier Airlines, departs from Las Vegas Harry Reid International on Sat, 31 May, arriving in St Louis.Price includes taxes and charges.From £133, select.
Tue, 27 MaySTL - LAS with Frontier Airlines
1 stop
Sat, 31 MayLAS - STL with Frontier Airlines
1 stop
from £133
Las Vegas.£136 per passenger.Departing Sun, 18 May, returning Thu, 22 May.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from St Louis on Sun, 18 May, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Thu, 22 May, arriving in St Louis.Price includes taxes and charges.From £136, select.
Frontier Airlines
Sun, 18 MaySTL - LAS with Frontier Airlines
Direct
Frontier Airlines
Thu, 22 MayLAS - STL with Frontier Airlines
Direct
from £136
Las Vegas.£136 per passenger.Departing Sun, 15 Jun, returning Thu, 19 Jun.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from St Louis on Sun, 15 Jun, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Thu, 19 Jun, arriving in St Louis.Price includes taxes and charges.From £136, select.
Frontier Airlines
Sun, 15 JunSTL - LAS with Frontier Airlines
Direct
Frontier Airlines
Thu, 19 JunLAS - STL with Frontier Airlines
Direct
from £136
Las Vegas.£142 per passenger.Departing Mon, 28 Jul, returning Fri, 1 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from St Louis on Mon, 28 Jul, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Fri, 1 Aug, arriving in St Louis.Price includes taxes and charges.From £142, select.
Frontier Airlines
Mon, 28 JulSTL - LAS with Frontier Airlines
Direct
Frontier Airlines
Fri, 1 AugLAS - STL with Frontier Airlines
Direct
from £142
Las Vegas.£144 per passenger.Departing Sat, 24 May, returning Wed, 4 Jun.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from St Louis on Sat, 24 May, arriving in Las Vegas Harry Reid International.Inbound indirect flight with Spirit Airlines, departs from Las Vegas Harry Reid International on Wed, 4 Jun, arriving in St Louis.Price includes taxes and charges.From £144, select.
Sat, 24 MaySTL - LAS with Spirit Airlines
1 stop
Wed, 4 JunLAS - STL with Spirit Airlines
1 stop
from £144
Las Vegas.£150 per passenger.Departing Fri, 8 Aug, returning Mon, 11 Aug.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from St Louis on Fri, 8 Aug, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Mon, 11 Aug, arriving in St Louis.Price includes taxes and charges.From £150, select.
Frontier Airlines
Fri, 8 AugSTL - LAS with Frontier Airlines
Direct
Frontier Airlines
Mon, 11 AugLAS - STL with Frontier Airlines
Direct
from £150
Las Vegas.£159 per passenger.Departing Mon, 28 Jul, returning Thu, 31 Jul.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from St Louis on Mon, 28 Jul, arriving in Las Vegas Harry Reid International.Inbound direct flight with Frontier Airlines departs from Las Vegas Harry Reid International on Thu, 31 Jul, arriving in St Louis.Price includes taxes and charges.From £159, select.
Frontier Airlines
Mon, 28 JulSTL - LAS with Frontier Airlines
Direct
Frontier Airlines
Thu, 31 JulLAS - STL with Frontier Airlines
Direct
from £159
How did we find these deals? The deals you see here are the lowest prices for flight tickets from St Louis to Las Vegas found in the last 4 days, and are subject to change and availability.

Find the cheapest month to fly from St Louis to Las Vegas

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Las Vegas flights are currently cheapest in May.
May
from £133
Jun
from £136
Jul
from £159
Aug
from £150
Sep
from £172
Oct
from £198
Nov
from £200
Dec
from £337
Jan
Find prices
Feb
Find prices
Mar
Find prices
Apr
Find prices

Direct flights from St Louis to Las Vegas

Alternative St Louis to Las Vegas routes

Looking for the cheapest, fastest or easiest route from St Louis to Las Vegas? You could fly into the following airports instead.

St Louis to Las Vegas: Flight information

The things to know before you go.
Cheapest flight found£129
Cheapest month to flyJune
Average flight time3 hrs, 33 mins
Most popular airlineSouthwest Airlines
Average flights per week78

Finding cheap flights from St Louis to Las Vegas: Frequently asked questions

There are 4 airports in Las Vegas: Las Vegas North Air Terminal, Las Vegas Harry Reid International, Las Vegas Henderson Sky Harbor, and Boulder City.
The best price we found for a return flight from St Louis to Las Vegas is £129. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 33 minutes is the average flight time from St Louis to Las Vegas.
Southwest Airlines, Frontier Airlines and Volaris fly direct from St Louis to Las Vegas.
As of May 2025, there are 117 flights per week flying from St Louis to Las Vegas.
The cheapest month to fly from St Louis to Las Vegas is usually May 2025.
If you're flying from St Louis Airport, the cheapest airport near Las Vegas is Las Vegas Harry Reid International – which is 2.7 miles away from the centre of Las Vegas. We've found flights into this airport from £129.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Las Vegas on Saturday, 7 June 2025.
Yes – the average flight time is 3 hours and 33 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Las Vegas but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Las Vegas is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 21°C. July is typically the warmest month in Las Vegas, when it usually averages around 37°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging -0°C. The rainiest month is February.
Currently, Spirit Airlines and Frontier Airlines offer the cheapest flight tickets to Las Vegas.

Travelling from Lambert-St. Louis International Airport (STL) to Las Vegas: what you need to know

  • Approximately 3 hours 15 minutes is how long you can expect to be in the air on a direct flight from Lambert-St. Louis International Airport to Las Vegas.

  • Lambert-St. Louis International Airport is located in St Louis. Based in the UTC-7 timezone, Las Vegas is two hours behind St Louis.

  • Lambert-St. Louis International Airport (STL) to Harry Reid Airport (formerly McCarran Airport) (LAS) is the most traveled route, with 22 weekly departures to pick from. If you have things to do before leaving, the last flight from STL to LAS is with Southwest Airlines at 22:40. Opt for the first departure operated by Southwest Airlines at 05:00 if you want to get on your way earlier.

  • For a stress-free journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to catch your STL to Las Vegas flight.

  • Heading off during a peak period like a bank holiday? Expect longer lines at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • Begin your trip at STL and travel nonstop to Harry Reid Airport (formerly McCarran Airport) (LAS). That's where you can expect to touch down when searching for Lambert-St. Louis International Airport to Las Vegas tickets.

  • Southwest Airlines is a leading airline that offers direct flights from Lambert-St. Louis International Airport to Las Vegas.

  • Travelling from central St Louis to STL takes around 35 minutes on public transport. If you ride-share, drive or take a cab, you'll cover the 10 miles in 20 minutes or so, depending on traffic conditions.

  • In search of a hotel close to STL? If you're catching an early flight from Lambert-St. Louis International Airport to Las Vegas, these accommodation options will put you moments from check-in:

    • La Quinta Inn by Wyndham St. Louis Hazelwood - Airport North

    • Extended Stay America Select Suites - St Louis - Airport - Central

    • Best Western St. Louis Airport North Hotel Suites

  • When it comes to the on-time performance of Lambert-St. Louis International Airport, data shows 78.04% of flights arrive within the expected time frame.

  • You'll find STL at 10701 Lambert International Blvd..

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Las Vegas

  • The best price we've seen for a one-way Lambert-St. Louis International Airport to Las Vegas flight is £54. The cheapest price for a return flight is £129. Bear in mind fares can change due to demand at the time of booking.

  • To secure cheap flights from STL to Las Vegas, reserve your journey one month ahead of your departure date.

  • May is the best month for picking up an incredible deal on Lambert-St. Louis International Airport to Las Vegas tickets. If you'd like to travel during a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

  • You don't need to check in daily to find out if fares have dropped when you set up a Price Alert. We'll update you as soon as there's an even bigger deal on cheap flights from STL to Las Vegas.

  • Find a cheap flight from Lambert-St. Louis International Airport to Las Vegas with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Las Vegas

Harry Reid Airport (formerly McCarran Airport) (LAS)

  • Harry Reid Airport (formerly McCarran Airport) (LAS) to central Las Vegas takes about 15 minutes to reach by car. The centre is roughly 12 miles away.

  • If you're travelling by public transport, expect a journey time of around 1 hour.

  • If you're coming in on a late flight from Lambert-St. Louis International Airport to Las Vegas, few things beat the convenience of staying close to the terminal. Collect your bags from the carousel and then be showered and sleeping soon after at one of these hotels near LAS:

    • Treasure Island – TI Las Vegas Hotel & Casino

    • OYO Hotel and Casino Las Vegas

    • Horseshoe Las Vegas

  • Explore without limits with a Harry Reid Airport (formerly McCarran Airport) rental car. Book your wheels from Dollar, Thrifty or Alamo and experience more of Las Vegas and beyond.

  • Booking your vehicle from Harry Reid Airport (formerly McCarran Airport) around one week before your flight from STL to Las Vegas can help you get the best possible rate.

  • You'll find LAS at 5757 Wayne Newton Boulevard.

Best time to go to Las Vegas

  • Before scheduling your flights from Lambert-St. Louis International Airport to Las Vegas, consider which time of year is best for you. High season in Las Vegas offers a bustling atmosphere and plenty of activities, while the low season means you'll get cheaper hotel deals and fewer crowds.

  • The warmest month in Las Vegas is July, with temperatures ranging between 23ºC (73ºF) and 42ºC (108ºF). Lock in your Lambert-St. Louis International Airport to Las Vegas plane ticket then if you enjoy this type of weather.

  • If you want to travel in cooler conditions, search for a cheap ticket from STL to Las Vegas in January when temperatures average between -1ºC (30ºF) and 13ºC (55ºF).

More about Las Vegas

  • Start your Las Vegas trip right by choosing the perfect place to stay. Once you've booked your flight from Lambert-St. Louis International Airport to Las Vegas, check out our range of hotels including:

    • SAHARA Las Vegas

    • Treasure Island – TI Las Vegas Hotel & Casino

    • The Strat Hotel, Casino & Tower

  • Every great journey has to include a little sightseeing. Fountains of Bellagio, Las Vegas Strip and Fremont Street Experience are must-do's during your Las Vegas adventure.

Explore more of United States

  • You've done Las Vegas, now it's time to explore other parts of United States. Journey around 230 miles south-west to Los Angeles to tick off its top sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, there's plenty to keep you busy.

  • Around 260 miles south-east of Las Vegas, Phoenix is another favourite stop in United States. Experience major highlights starting with Desert Botanical Garden, Heard Museum and Papago Park.

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Plan the rest of your trip from St Louis to Las Vegas

  • Car hire in Las Vegas
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Prices shown on this page are estimated lowest prices only. Found in the last 45 days.

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