Cheap flight tickets from Harry Reid International to St Louis

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Flight deals from Harry Reid International to St Louis

Looking for a cheap last-minute deal or the best return flight from Harry Reid International to St Louis? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Harry Reid International to St Louis

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

Direct flights from Harry Reid International to St Louis

Harry Reid International to St Louis: Alternative routes

Compare routes from Harry Reid International 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 foundRM538
Cheapest month to flyMarch
Average flight time3 hrs, 13 mins
Most popular airlineSouthwest Airlines
Average flights per week48

Finding cheap flights from Harry Reid International to St Louis: Frequently asked questions

The best price we found for a return flight from Harry Reid International to St Louis is RM538. 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 Harry Reid International to St Louis.
Southwest Airlines, Frontier Airlines and Volaris fly direct from Harry Reid International to St Louis.
As of February 2026, there are 48 flights per week flying from Harry Reid International to St Louis.
The cheapest month to fly from Harry Reid International to St Louis is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Harry Reid International Airport to St Louis Airport on Wednesday, 18 March 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.
Currently, Frontier Airlines offers the cheapest flight tickets to St Louis.

Flying from Harry Reid Airport (formerly McCarran Airport) (LAS) to Lambert-St. Louis International Airport (STL): what you need to know

  • The average time for a direct flight from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport is 3 hours 15 minutes.

  • St Louis's timezone is UTC-5, making St Louis two hours ahead of Las Vegas.

  • Each week, there are 34 Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport flights. To take off early, take the 05:01 Frontier Airlines flight. If you're eager to make the most of your day before flying, the last flight is at 20:30 with Southwest Airlines.

  • Arrive at the airport on time so you don't miss your LAS to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • Flying during a peak time like October? Major public holidays and other high seasons can result in longer queues and delays at security. Be extra cautious and arrive up to four hours before an international flight and two hours before a domestic departure.

  • You can fly nonstop to St Louis, United States. Prepare for takeoff with one of these carriers offering direct flights from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport:

  • The airline with the highest booking volume on this route is Frontier Airlines.

  • Southwest Airlines is the most punctual carrier offering LAS to STL flights. A reliable 84.18% of its services on this route arrive as planned.

  • Think about adding a stopover when booking your ticket from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport. Just deselect 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here are some options between LAS and STL:

    • Kansas City International Airport

    • Denver International Airport

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from Harry Reid Airport (formerly McCarran Airport) (LAS) to Lambert-St. Louis International Airport (STL)

  • The cheapest price we've found for a one-way Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport flight is RM263. A round-trip plane ticket is currently RM538. Depending on the availability when you book, these fares can change.

  • Get cheap tickets from LAS to STL by booking six months ahead. Based on our research, that's the sweet spot for finding the biggest deals.

  • Schedule your trip for May. That's the cheapest month for flights from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport. If you're flexible with your travel dates, use the 'Whole month' tool to see the cheapest airfare across every month.

  • Save time looking for cheap flights from LAS to STL by creating a Price Alert. You'll receive an email or push notification on the app when a new low fare is offered.

  • Tailor your flights using filters. Choose your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport.

Handy information about Harry Reid Airport (formerly McCarran Airport) (LAS)

  • LAS is located at 5757 Wayne Newton Boulevard.

  • Harry Reid Airport (formerly McCarran Airport) has a strong on-time record, reducing the likelihood of delays. Departures from LAS make it to their destination as scheduled 82.07% of the time.

  • To reach Harry Reid Airport (formerly McCarran Airport) from central Las Vegas, it'll take around 15 minutes if you're planning to drive. This depends on traffic, however. It's approximately 19 kilometres from the airport to the city centre.

  • Taking public transport? Expect a journey time of around 1 hour.

  • Get your travels off to a leisurely start by staying near LAS. Whether you're boarding an early flight from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport or just don't want to be rushed, these stays are the answer:

Arriving at Lambert-St. Louis International Airport (STL)

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

  • STL is located at 10701 Lambert International Blvd..

  • Lambert-St. Louis International Airport to the centre of St Louis has a drive time of around 20 minutes. It's approximately 26 kilometres away.

  • It takes roughly 35 minutes if you're using public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • July is the busiest month for flights from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport. To escape the crowds, visit St Louis in April.

  • When reserving your flight from Harry Reid Airport (formerly McCarran Airport) to Lambert-St. Louis International Airport, consider the type of weather you like. July is the warmest month in St Louis, with temperatures ranging from 17ºC (63ºF) to 33ºC (91ºF).

  • If you'd rather travel in cooler conditions, look for a cheap ticket from LAS to STL in January. Temperatures average between -8ºC (18ºF) and 7ºC (45ºF) then.

Explore more of United States

  • St Louis has plenty going for it, but there are so many other corners of United States waiting to be explored. Around 418 kilometres north-east of St Louis, a trip to Chicago will keep you on the go. Start with popular sights like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Indianapolis is another must-experience destination in United States and is around 370 kilometres east of St Louis. No journey is complete without seeing The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

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