Cheap Flights from St Louis to Las Vegas

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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 Airport to Las Vegas? If you want to travel next month, return fares start from Rs63,750. Find the lowest prices on one-way and return tickets right here.

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 July.

Direct flights from St Louis to Las Vegas

St Louis to Las Vegas: Flight information

The things to know before you go.
Cheapest flight foundRs23,982
Cheapest month to flyJuly
Average flight time3 hrs, 32 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: North Las Vegas, Harry Reid International, Henderson Executive, and Boulder City Municipal.
The best price we found for a return flight from St Louis to Las Vegas is Rs45,656. 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 32 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 2026, there are 78 flights per week flying from St Louis to Las Vegas.
The cheapest month to fly from St Louis to Las Vegas is usually August.
If you're flying from St Louis Airport, the cheapest airport near Las Vegas is Harry Reid International – which is 4.3 km away from the centre of Las Vegas. We've found flights into this airport from Rs45,656.
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 Tuesday, 18 August 2026.
Yes – the average flight time is 3 hours and 32 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, Frontier Airlines offers the cheapest flight tickets to Las Vegas.

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

  • The average duration of a direct flight from St Louis Lambert International Airport to Las Vegas is 3 hours 10 minutes.

  • Las Vegas is two hours behind St Louis, where St Louis Lambert International Airport is located. Las Vegas follows the UTC-8 timezone.

  • With 26 weekly flights between the two airports, St Louis Lambert International Airport (STL) to Las Vegas Harry Reid International Airport (LAS) is the most popular route. Southwest Airlines operates the earliest flight at 05:00. If you prefer to make the most of your day before you fly, the last departure from STL to LAS is with Southwest Airlines at 22:40.

  • Give yourself enough time to get on your STL to Las Vegas flight. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak month such as July? School holidays and other popular periods can mean longer queues and delays at security. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

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

  • Check out the promotions from Southwest Airlines. This carrier has direct flights from St Louis Lambert International Airport to Las Vegas.

  • Travelling from central St Louis to STL takes about 30 minutes on public transport. If you drive, ride-share or grab a taxi, you'll cover the 16 kilometres in 25 minutes or so, depending on traffic.

  • Have an early flight from St Louis Lambert International Airport to Las Vegas? Avoid the hassle of rushing to the terminal (and catch some extra z's) by choosing one of these stays close to STL:

  • 76% of flights taking off from St Louis Lambert International Airport arrive at their destination on schedule.

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

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

  • Rs23,982 is currently the best price for a one-way St Louis Lambert International Airport to Las Vegas flight. A return plane ticket starts at Rs45,656. These prices can change based on availability and demand.

  • Don't leave things to the last moment. You're more likely to find cheap flights from STL to Las Vegas if you book ahead. Airlines often have some great early bird deals.

  • The 'Whole month' search tool will show you the cheapest tickets from St Louis Lambert International Airport to Las Vegas across the month. It's an easy way to snap up a bargain if your travel plans are flexible.

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

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

Airports in Las Vegas

Las Vegas Harry Reid International Airport (LAS)

  • Las Vegas Harry Reid International Airport (LAS) is around 8 kilometres from the centre of Las Vegas. If you're catching a taxi or a ride-share, the drive takes about 10 minutes.

  • When travelling on public transport, expect a journey time of about 25 minutes.

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

  • To get the lowest price, reserve your ride from Las Vegas Harry Reid International Airport around one week ahead of your flight from STL to Las Vegas.

  • The address for LAS is 5757 Wayne Newton Boulevard.

Best time to go to Las Vegas

  • March is the busiest month for flights from St Louis Lambert International Airport to Las Vegas. To skip the crowds, plan your trip to Las Vegas in December.

  • The warmest month in Las Vegas is July, with temperatures ranging between 23ºC and 43ºC. Lock in your St Louis Lambert International Airport to Las Vegas plane ticket then if that's the weather you find most pleasant.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from STL to Las Vegas in January when temperatures average between 0ºC and 16ºC.

More about Las Vegas

  • When it comes to searching for somewhere to rest your head, you'll find the most popular stays in Las Vegas right here. Browse these options as soon as you've locked in your flight from St Louis Lambert International Airport to Las Vegas:

  • There are so many things to do and see in this city it can be hard to know where to begin. Las Vegas Strip, Ciudad del Pecado o Las Vegas and Fountains of Bellagio are popular attractions which should feature on any well-planned Las Vegas itinerary.

Explore more of the United States

  • Los Angeles is just one of the many places in the United States waiting to be discovered once you've taken in the sights of Las Vegas. Around 370 kilometres away to the southwest, its best attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • Phoenix is another favourite destination in the United States and is around 418 kilometres southeast of Las Vegas. No trip is complete without a visit to Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.