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 to Las Vegas? 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 May.

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 foundر.ق.‏ 197
Cheapest month to flyMay
Average flight time3 hrs, 37 mins
Most popular airlineSouthwest Airlines
Average flights per week50

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 ر.ق.‏ 482. 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 37 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 February 2025, there are 50 flights per week flying from St Louis to Las Vegas.
The cheapest month to fly from St Louis to Las Vegas is usually February 2025.
If you're flying from St Louis Airport, the cheapest airport near Las Vegas is Las Vegas Harry Reid International – which is 4.3 km away from the centre of Las Vegas. We've found flights into this airport from ر.ق.‏ 482.
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 Monday, 31 March 2025.
Yes – the average flight time is 3 hours and 37 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 February, the average temperature is usually around 8°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.

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

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

  • Las Vegas is 2 hours behind St Louis, where Lambert-St. Louis International Airport is located. Las Vegas operates on the UTC-7 timezone.

  • With 103 weekly flights between the two airports, Lambert-St. Louis International Airport (STL) to Harry Reid Airport (formerly McCarran Airport) Airport (LAS) is the busiest route. Southwest Airlines operates the earliest flight at 05:05. If you prefer to get more out of your day before flying, the last departure from STL to LAS is with Southwest Airlines at 22:50.

  • To ensure you catch your flight from STL to Las Vegas, leave plenty of time for things like check-in and baggage drop. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • Peak months like July or holiday times such as Christmas and New Year will mean bigger waits at check-in and security. Travelling then? Play it safe and head to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a wise idea.

  • You can book a nonstop flight from Lambert-St. Louis International Airport to Las Vegas. Start your trip at STL and touch down at Harry Reid Airport (formerly McCarran Airport) Airport (LAS).

  • Well-known carriers that have direct flights from Lambert-St. Louis International Airport to Las Vegas include:

  • You don't need your passport or a visa to fly within United States. You will need a valid identity document though, such as an ID card or driver's licence. Add them to your packing list once you've booked your flight tickets from Lambert-St. Louis International Airport to Las Vegas.

  • STL is about 26 kilometres from central St Louis. If you're ride-sharing, catching a cab or driving from the centre, it'll take 21 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the trip time to be approximately 36 minutes.

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

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 ticket from Lambert-St. Louis International Airport to Las Vegas is ر.ق.‏ 197. The cheapest price for a return flight is ر.ق.‏ 482. Bear in mind fares can change due to demand at the time of booking.

  • Get cheap tickets from STL to Las Vegas by booking at least 9 months ahead. According to our research, that's the sweet spot for landing a bargain.

  • Organise your trip for May. That's the cheapest month for tickets from Lambert-St. Louis International Airport to Las Vegas. If your travel dates are flexible, use the 'Whole month' tool to see the lowest price across each month.

  • Snapping up a cheap ticket from STL to Las Vegas couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when the price has dropped.

  • Use the filters to tailor your flights from Lambert-St. Louis International Airport to Las Vegas. Simply enter your ideal arrival and departure times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to get the best deals.

Airports in Las Vegas

Harry Reid Airport (formerly McCarran Airport) Airport (LAS)

  • Harry Reid Airport (formerly McCarran Airport) Airport (LAS) to central Las Vegas is about 15 minutes by car. It's approximately 19 kilometres away.

  • If you're using public transport, expect a journey time of roughly 1 hour.

  • Consider staying in a hotel near LAS if you have a late flight from Lambert-St. Louis International Airport to Las Vegas. Pick one of these options and avoid the hassle of a long transfer:

Best time to go to Las Vegas

  • October is the most popular month to catch a flight from Lambert-St. Louis International Airport to Las Vegas while May is the quietest. To work out the best time to go to Las Vegas, consider the pace you like to travel at.

  • When booking your flight from Lambert-St. Louis International Airport to Las Vegas, think about the kind of weather you enjoy. July is the warmest month in Las Vegas, with temperatures ranging from 23ºC to 42ºC.

  • Search for cheap flights from STL to Las Vegas in January if you want to travel in cooler conditions. Temperatures are at their lowest around then, ranging between -1ºC and 13ºC on average.

More about Las Vegas

  • When it comes to looking for somewhere to rest your head, you'll find the best stays in Las Vegas right here. Explore these options after you've booked your flight from Lambert-St. Louis International Airport to Las Vegas:

  • There are so many things to explore in this city it can be tricky to know where to start. Las Vegas Strip, Fountains of Bellagio and Fremont Street Experience are top attractions which should feature on any good Las Vegas itinerary.

Complete your Las Vegas trip with a car rental

  • Finding you a cheap flight from Lambert-St. Louis International Airport to Las Vegas isn't the only thing we're good at. Check out our car rentals in Las Vegas and explore the city on your own terms. We find deals from trusted car rental companies and put them all in one place. Instantly compare rates and then book with no fees.

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