LAS - STL

$77 Find Cheap Flights from Las Vegas to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to St. Louis departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$160
Overall average: $234
Frontier
Thu 4/16Mon 4/20
LAS - STL • 1 stop
Cheapest non-stop
$176
Typical prices: $135-$271
Frontier
Thu 4/16Sun 4/19
LAS - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Southwest's two free checked bags save on fees.
Use Curbside Concierge at LAS to skip bag check lines.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Every day
You can fly direct with Frontier and Southwest. Average duration is 3h 12m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $189 (round-trip)
Shortest trip • 4h 55m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 33% price drop
Most popular
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Las Vegas to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Las Vegas to St. Louis

Thu, Apr 16 - Mon, Apr 20
Frontier Logo
6:00 am - 7:21 pm
LAS
-
STL
11h 21m
1 stop
Frontier Logo
3:21 pm - 9:32 pm
STL
-
LAS
8h 11m
1 stop
$160Frontier
Thu, Apr 16 - Mon, Apr 20
Frontier Logo
3:35 pm - 9:00 pm
LAS
-
STL
3h 25mnonstop
Frontier Logo
3:21 pm - 9:32 pm
STL
-
LAS
8h 11m
1 stop
$169Frontier
Wed, Apr 15 - Fri, Apr 17
Frontier Logo
9:20 pm - 7:21 pm
LAS
-
STL
20h 01m
1 stop
Frontier Logo
8:06 pm - 8:11 pm
STL
-
LAS
26h 05m
1 stop
$171Frontier
Thu, Apr 16 - Sun, Apr 19
Frontier Logo
3:35 pm - 9:00 pm
LAS
-
STL
3h 25mnonstop
Frontier Logo
9:55 pm - 11:37 pm
STL
-
LAS
3h 42mnonstop
$176Frontier
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
3:45 pm - 9:10 pm
LAS
-
STL
3h 25mnonstop
Frontier Logo
9:55 pm - 11:37 pm
STL
-
LAS
3h 42mnonstop
$177Frontier
Fri, Apr 10 - Fri, Apr 17
Frontier Logo
10:50 pm - 12:21 pm
LAS
-
STL
11h 31m
1 stop
Frontier Logo
9:55 pm - 11:37 pm
STL
-
LAS
3h 42mnonstop
$178Frontier
Fri, Apr 10 - Fri, Apr 17
Frontier Logo
10:50 pm - 12:21 pm
LAS
-
STL
11h 31m
1 stop
Frontier Logo
8:06 pm - 11:36 pm
STL
-
LAS
5h 30m
1 stop
$184Frontier
Thu, Apr 9 - Sat, Apr 11
Frontier Logo
9:21 pm - 9:48 am
LAS
-
STL
10h 27m
1 stop
Frontier Logo
4:59 pm - 11:41 pm
STL
-
LAS
8h 42m
1 stop
$185Frontier
Thu, Apr 16 - Sat, Apr 18
Frontier Logo
3:35 pm - 9:00 pm
LAS
-
STL
3h 25mnonstop
Frontier Logo
4:16 pm - 5:59 pm
STL
-
LAS
3h 43mnonstop
$186Frontier
Thu, Apr 9 - Thu, Apr 16
Frontier Logo
7:00 am - 12:19 pm
LAS
-
STL
3h 19mnonstop
Frontier Logo
9:55 pm - 11:37 pm
STL
-
LAS
3h 42mnonstop
$187Frontier
Booking Insights

KAYAK's insights & trends for Las Vegas to St. Louis flights

Get data-powered insights and trends into flights from Las Vegas to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Las Vegas to St. Louis?

The average price of all round-trip flights from Las Vegas to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Las Vegas to St. Louis, look for departures on Fridays and avoid leaving on a Tuesday, as it's usually the priciest day. When flying back from St. Louis, Monday is the cheapest day to fly and Wednesday is the most expensive.

What is the cheapest month to fly from Las Vegas to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Las Vegas to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Las Vegas to St. Louis is October, where tickets cost $164 (return) on average. On the other hand, the most expensive months are January and February, where the average cost of round-trip tickets is $312 and $280 respectively.

Can I save money by flying with a layover from Las Vegas to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $280, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Las Vegas to St. Louis?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Las Vegas to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Las Vegas to St. Louis, you should book around 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Las Vegas to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Harriet Baskas

Harriet Baskas

Expert on LAS

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low seasonJanuary
Cheapest flight$77
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from Las Vegas to St. Louis

When to book flights from Las Vegas to St. Louis

Are your dates flexible? Find out the best times to travel from Las Vegas to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Las Vegas to St. Louis

  • What is the cheapest flight from Las Vegas to St. Louis?

    In the last 3 days, the lowest price for a flight from Las Vegas to St. Louis was $77 for a one-way ticket and $160 for a round-trip.

  • Do I need a passport to fly between Las Vegas and St. Louis?

    No

  • Which airports will I be using when flying from Las Vegas to St. Louis?

    When flying out of Las Vegas you will be using Las Vegas Harry Reid Intl. You will be landing at St. Louis, also known as Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Las Vegas to St. Louis?

    JetBlue, American Airlines, and Delta offer inflight Wi-Fi service on the Las Vegas to St. Louis flight route.

  • Which aircraft models fly most regularly from Las Vegas to St. Louis?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Las Vegas to St. Louis flight route.

  • Which airline alliances offer flights from Las Vegas to St. Louis?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Las Vegas and St. Louis, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Las Vegas to St. Louis?

    There are nonstop flights from Las Vegas to St. Louis on a daily basis.

  • Which is the best airline for flights from Las Vegas to St. Louis, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Las Vegas to St. Louis are Southwest and Delta. With an average price for the route of $397 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $356 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Las Vegas to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Las Vegas to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Las Vegas to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Las Vegas is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Las Vegas to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Las Vegas with another airline. Booking your flights between Las Vegas and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Las Vegas to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Las Vegas to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $140 or less one-way and $254 or less round-trip.

Prefer to fly direct from Las Vegas to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Las Vegas Harry Reid Intl to Lambert-St Louis.
Find which airlines fly direct from Las Vegas Harry Reid Intl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Las Vegas Harry Reid Intl to Lambert-St Louis

Monday

Frontier,Southwest

Frontier,Southwest

Tuesday

Southwest,Frontier

Southwest,Frontier

Wednesday

Southwest,Frontier

Southwest,Frontier

Thursday

Frontier,Southwest

Frontier,Southwest

Friday

Frontier,Southwest

Frontier,Southwest

Saturday

Frontier,Southwest

Frontier,Southwest

Sunday

Frontier,Southwest

Frontier,Southwest

See more direct flights

Direct returns

Lambert-St Louis to Las Vegas Harry Reid Intl

Monday

Frontier,Southwest

Frontier,Southwest

Tuesday

Southwest,Frontier

Southwest,Frontier

Wednesday

Southwest,Frontier

Southwest,Frontier

Thursday

Frontier,Southwest

Frontier,Southwest

Friday

Frontier,Southwest

Frontier,Southwest

Saturday

Frontier,Southwest

Frontier,Southwest

Sunday

Frontier,Southwest

Frontier,Southwest

See more direct flights

Reviews of the top 5 airlines serving from Las Vegas to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Las Vegas to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4325 reviews
8.6Crew
8.0Comfort
8.1Boarding
7.0Food
7.5Entertainment
Airline reviews

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

8.0 ExcellentDianne, Mar 2026
LAS - LAX
Read more Southwest reviews

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

Great plane, great attendants,great flight crew,on time. Wonderful flight home..

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

Paid for premium extra leg room but the bin space for rows 1-3 had to go in rows 4-6 and 4-6 had to go to 7-9 because flight attendants have snacks and their luggage upfront. So we pay extra to have to fight thru traffic to get our bags. Only 2nd day of new seating so hope they fix this.

Everything went smoothly and we even arrived a little bit early.

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

They sent a notice that they were boarding an hour early. We had to leave the club and run to the gate. They said sorry, that came from corporate and was a mistake. They did not have enough seating because the flight before it had not taken off on time. They moved our gate and delayed it for an hour.

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

Great experience. Good dinner and service. FA's were very nice and attentive.

It was great. Smooth flight, comfortable, left on time and landed on time.

We hoarded. Then we deplaned. Then we waited for 10 hours in the MSP airport due to a wheel misfunction. We understand safety but communication between crew and airport staff was horrible. When we did finally board, we were rushed on and because we were waiting for a “fresh” pilot and crew, we sat in a roasting plane with no A/C for an hour. My question is why was this flight not cancelled right away when they knew this would be a huge issue OR, why did AA not get a substitute plane, considering this was already a full flight? To me, this appears to be a complete breakdown in leadership and utter systems failure. The compensation for completely disrupting travel plans for hundreds, which we paid dearly for, was measly. While we appreciated the lodging for the night, $12 in meal vouchers isn’t going to sustain anyone for over 12 hours. “We apologize; our hands are tied” is no longer an acceptable explanation. We are so completely turned off by this experience and will definitely seek alternative avenues when we need to fly.

Mostly good. The WiFi wasn’t working so that was not great.

I rated the experience "mediocre" because of the 2 hour delay in take off. This is the 4th flight from DFW on AA where there was a delay and in one of the instances (after 13 delays), the flight was cancelled. I understand weather but for the March 18th flight, there was no weather issue in Dallas or Detroit. I called Concierge Key and they were wonderful, booking me on a later flight in case my flight was cancelled. I have flown with American for many years and never has there been this consistent pattern of delays. Very disappointing.

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

Horrible experience upon landing. Probably more due to DCA utter incompetence than AA.

Jill was the flight attendant in first class she was fabulous!! Best flight attendant I have had in years.!! And I fly every other week. Other can learn from her!!

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

Everything you need to know for your flight from Las Vegas to St. Louis

Information on your arrival and departure airports