Cheap Flights from Las Vegas to St Louis

Compare Las Vegas to St Louis flight deals

Find the cheapest month or even day of the year to fly to St Louis

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Flight deals from Las Vegas to St Louis

Looking for a cheap last-minute deal or the best return flight from Las Vegas to St Louis Airport? If you want to travel next month, return fares start from ج.م.‏ 10,273. Find the lowest prices on one-way and return tickets right here.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Las Vegas to St Louis flights are currently cheapest in July.

Direct flights from Las Vegas to St Louis

Las Vegas to St Louis: Alternative routes

Compare routes from Las Vegas to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

Las Vegas to St Louis: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 3,779
Cheapest month to flyJuly
Average flight time3 hrs, 13 mins
Most popular airlineSouthwest Airlines
Average flights per week34

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

The best price we found for a return flight from Las Vegas to St Louis is ج.م.‏ 8,451. 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 13 minutes is the average flight time from Las Vegas to St Louis.
Southwest Airlines, Frontier Airlines and Volaris fly direct from Las Vegas to St Louis.
As of June 2026, there are 34 flights per week flying from Las Vegas to St Louis.
The cheapest month to fly from Las Vegas to St Louis is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Las Vegas to St Louis Airport on Thursday, 1 October 2026.
Yes – the average flight time is 3 hours and 13 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 St Louis 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 St Louis is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to St Louis is Frontier Airlines .

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

  • Your adventure will begin at Las Vegas Harry Reid International Airport (LAS), the main airport in Las Vegas. Look for flights from Las Vegas to St Louis Lambert International Airport (STL) that take off from this terminal.

  • Around 3 hours 10 minutes is how long you'll be in the air on a direct Las Vegas to St Louis Lambert International Airport flight.

  • St Louis Lambert International Airport is located in St Louis. The city runs on the UTC-6 timezone and is two hours ahead of Las Vegas.

  • The busiest route is from Las Vegas Harry Reid International Airport (LAS) to St Louis Lambert International Airport (STL), with 26 direct weekly services. If you'd rather get moving right away, the earliest flight from LAS to STL is the 5am Southwest Airlines service. If a later flight fits your day better, the last departure is at 8:40pm with Southwest Airlines.

  • Your flight from Las Vegas to STL won't wait if you're running late, so be at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • With more travellers during busy months like March, be at your terminal even earlier. Two hours for domestic flights and up to four for international journeys will allow for additional wait times. Remember things also get busy during major holidays like Christmas.

Airports in Las Vegas

Las Vegas Harry Reid International Airport (LAS)

  • Reach your destination without the detour from Las Vegas Harry Reid International Airport (LAS). Direct flights from Las Vegas to St Louis Lambert International Airport (STL) are available from here.

  • You'll find a direct flight from Las Vegas to St Louis Lambert International Airport with Southwest Airlines. This well-known airline offers services from LAS.

  • The airline with the highest booking numbers between LAS and STL is Southwest Airlines.

  • Frontier Airlines sets the standard for punctuality. An impressive 88.89% of its departures on this route arrive as scheduled.

  • Travelling from central Las Vegas to LAS takes around 25 minutes on public transport. If you drive, ride-share or get a taxi, you'll cover the 8 kilometres in 10 minutes or so, depending on traffic.

  • Want a stress-free start to your journey? Stay near Las Vegas Harry Reid International Airport. Whether you're boarding an early flight from Las Vegas to St Louis Lambert International Airport or just don't want to be rushed, these hotels have you covered:

  • When it comes to the on-time performance of Las Vegas Harry Reid International Airport, data shows 79% of flights arrive within the expected time frame.

  • LAS's address is 5757 Wayne Newton Boulevard.

About St Louis Lambert International Airport (STL)

Getting from St Louis Lambert International Airport (STL) to central St Louis

  • From St Louis Lambert International Airport, central St Louis is around 24 kilometres away. It takes about 25 minutes to reach the city centre by car.

  • If you're using public transport, expect a journey time of about 30 minutes.

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

  • The lowest price we've found for a one-way ticket from Las Vegas to St Louis Lambert International Airport is ج.م.‏ 3,779. For a return flight on this route, the best price is ج.م.‏ 8,451. Depending on when and how early you book, these fares could change.

  • To find cheap flights from Las Vegas to STL, book in advance. Airlines usually offer lower fares when flights first go on sale.

  • Cheap Las Vegas to St Louis Lambert International Airport tickets are easier to find when your dates are flexible. Try using the 'Whole month' search tool to compare fares across the month and then fly out on the cheapest day.

  • Save time searching for cheap plane tickets from Las Vegas to STL by setting up a Price Alert. We'll send you an email or notification on the app when a new discounted fare appears.

  • Filters make it easier to snap up a deal on your flight from Las Vegas to St Louis Lambert International Airport. Choose the airlines, flight times and stops that make sense for you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Las Vegas to St Louis Lambert International Airport (STL)

  • July is the busiest month for flights from Las Vegas to St Louis Lambert International Airport (STL). Plan your visit to St Louis in December for a more laid-back experience.

  • Before locking in your Las Vegas to STL plane ticket, consider the type of weather you enjoy. July is the warmest month in St Louis, with temperatures ranging from 17ºC to 33ºC.

  • If you like travelling in cooler conditions, search for a cheap ticket from Las Vegas to St Louis Lambert International Airport in January when temperatures are between -7ºC and 8ºC.

More about St Louis

Explore more of the United States

  • Evansville is just one of the many cities in the United States waiting to be explored once you've taken in the sights of St Louis. Around 257 kilometres away to the east, well-known attractions include Mesker Park Zoo, Riverfront Park and Evansville Museum of Arts, History & Science.

  • Columbia is another favourite destination in the United States and is around 177 kilometres west of St Louis. No trip is complete without seeing Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle.

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