Cheap Flights from Las Vegas (LAS) to St. Louis (SUS)

Popular airlines from Harry Reid Intl. Airport (LAS) to St. Louis, MO (SUS-Spirit of St. Louis)

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Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $127
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $127

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS) cost?
Lock in a cheap one-way flight or cheap return flight from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS)?
Planning your trip for is a great way to save, as it's the cheapest month for flights between LAS and SUS. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest LAS to SUS flight.
How many flights per day from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS)?
You'll have to book a flight with a layover if you're traveling from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from LAS to SUS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS)?
To arrive at Spirit of St. Louis Airport (SUS) on time, book a flight that leaves Harry Reid Intl. Airport (LAS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Louis from Harry Reid Intl. Airport (LAS)?
Compare your flight options from Harry Reid Intl. Airport (LAS) to Lambert-St. Louis Intl. Airport (STL). This is the only St. Louis airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS) last-minute?
Last-minute fares from LAS to SUS are usually more expensive. For the best prices, start searching for flights ahead of time. That said, if you can play around with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book a LAS to SUS flight and hotel package?
Compared with arranging hotels and flights separately, booking a LAS to SUS flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the hassle out of planning your trip. Just pick your flights and choose from our extensive range of stays, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Spirit of St. Louis Airport (SUS)?
It's generally possible to reschedule or cancel your LAS to SUS flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Spirit of St. Louis
Distance
1353 mi

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Las Vegas to St. Louis Flights

The cheapest times to fly from Las Vegas to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Las Vegas to St. Louis are during the month of . You can find some of the cheapest flights from Las Vegas to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Las Vegas to St. Louis

Sunday is one of the best days to book for cheap flights from Las Vegas to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Las Vegas to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Las Vegas to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Las Vegas to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Las Vegas to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Las Vegas to St. Louis Flights

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