LAS

Find First Class Flights from St. Louis to Las Vegas

1 adult
1 adult, First, 0 bags

KAYAK searches hundreds of travel sites at once for first class flights from St. Louis to Las Vegas

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Las Vegas, 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 St. Louis to Las Vegas, as well as popular online travel agencies
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Cheap First Class Flight Deals from St. Louis to Las Vegas

 
These are the cheapest deals for flights from St. Louis to Las Vegas currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. 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 first class round-trip flight deals to Las Vegas

Tue, Jul 21 - Thu, Jul 30
Delta Logo
7:55 pm - 11:40 pm
STL
-
LAS
5h 45m
1 stop
Delta Logo
5:00 pm - 12:41 am
LAS
-
STL
5h 41m
1 stop
$895Delta
Sun, Jul 19 - Wed, Jul 29
Delta Logo
7:55 pm - 11:40 pm
STL
-
LAS
5h 45m
1 stop
Delta Logo
6:19 am - 4:46 pm
LAS
-
STL
8h 27m
1 stop
$966Delta
Tue, Jul 21 - Tue, Jul 28
Delta Logo
7:55 pm - 11:40 pm
STL
-
LAS
5h 45m
1 stop
Delta Logo
5:20 pm - 8:46 am
LAS
-
STL
13h 26m
1 stop
$1,005Delta
Sat, Jul 25 - Wed, Jul 29
Delta Logo
5:00 pm - 9:58 pm
STL
-
LAS
6h 58m
1 stop
Delta Logo
6:19 am - 4:46 pm
LAS
-
STL
8h 27m
1 stop
$1,007Delta
Mon, Jul 20 - Thu, Jul 30
Delta Logo
5:36 pm - 8:25 am
STL
-
LAS
16h 49m
1 stop
Delta Logo
5:00 pm - 12:41 am
LAS
-
STL
5h 41m
1 stop
$1,015Delta
Sat, Jun 27 - Fri, Jul 3
Delta Logo
3:57 pm - 8:24 pm
STL
-
LAS
6h 27m
1 stop
Delta Logo
5:00 pm - 12:43 am
LAS
-
STL
5h 43m
1 stop
$1,044Delta
Mon, Jul 20 - Mon, Jul 27
United Airlines Logo
5:33 pm - 9:59 pm
STL
-
LAS
6h 26m
1 stop
United Airlines Logo
11:59 pm - 8:39 am
LAS
-
STL
6h 40m
1 stop
$1,065United Airlines
Sun, Jul 19 - Tue, Jul 28
Delta Logo
7:55 pm - 11:40 pm
STL
-
LAS
5h 45m
1 stop
Delta Logo
5:20 pm - 8:46 am
LAS
-
STL
13h 26m
1 stop
$1,076Delta
Mon, Jul 20 - Fri, Jul 24
United Airlines Logo
5:33 pm - 9:59 pm
STL
-
LAS
6h 26m
1 stop
United Airlines Logo
11:59 pm - 8:39 am
LAS
-
STL
6h 40m
1 stop
$1,102United Airlines
Sun, Jun 28 - Sat, Jul 4
United Airlines Logo
5:10 am - 9:07 am
STL
-
LAS
5h 57m
1 stop
United Airlines Logo
7:00 am - 3:46 pm
LAS
-
STL
6h 46m
1 stop
$1,136United Airlines

Good to Know - First Class Flights from St. Louis to Las Vegas

Low seasonMay
Cheapest flight$654
Average price round-trip$338
Best time to beat the crowds with an average 79% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from St. Louis to Las Vegas
(price for this month)

When to book first class flights to Las Vegas

Are your dates flexible? We break down the daily and monthly prices for first class flights to Las Vegas, so you can find the best time to fly.
Average price per month
Flight prices as travel date approaches

KAYAK’s Insights & Trends for St. Louis to Las Vegas First Class Flights

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

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

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

The cheapest month for First Class flights from St. Louis to Las Vegas is May, where tickets cost $338 (round-trip) on average. On the other hand, the most expensive months are June and January, where the average cost of round-trip tickets is $2,975 and $2,460 respectively.

Which airlines offer First Class tickets between St. Louis and Las Vegas?

There are 3 airlines that fly First Class from St. Louis to Las Vegas. They are: United Airlines, Delta and American Airlines. The cheapest price of all airlines flying this route was found with United Airlines at $969 for a round-trip flight. On average, the best prices for flying First Class on this route can be found at Delta.

FAQs for First Class St. Louis to Las Vegas Flights

  • What is the best airline when flying first class between St. Louis and Las Vegas?

    The highest-rated airline by KAYAK users offering first class flights for this route is Southwest, with an overall rating of 8.0.

KAYAK's Tips for Finding Cheap First Class Flights from St. Louis to Las Vegas

  • Look for a flight with a layover if you’re looking to save, as direct first class flights are generally more expensive for the route.

Reviews of the Top 5 Airlines Flying First Class from St. Louis to Las Vegas

 
See real verified KAYAK customer reviews for airlines flying to Las Vegas. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from St. Louis to Las Vegas. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly first class to Las Vegas? 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 4264 reviews
8.6Crew
8.0Comfort
7.0Food
7.5Entertainment
8.1Boarding
Airline reviews

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

10.0 ExcellentChristopher, May 2026
CLE - LAS
Read more Southwest reviews

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

The flight was okay. The pilots did an amazing job and kept us updated on the flight. The flight attendants were okay. They found time to be chatty with each other rather than focus on the guests. One of the attendants was a little less warm when asking about my bag I had on my lap that I was using during latter part of the mid- flight. Mind you, it was not the departure descent. I’m respectful to each and every attendant, it was the tone in her voice reminding me to place my carryon bag on the floor. I hope to have a better experience next time.

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

Snacks are always pretzels. Why can't you also offer peanuts ?

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The seats are now more narrow. I paid for front row the seats in the front are even more narrow than before.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

We got exit row seats both flights. Everything was running on time

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

My service light was on 15 minutes before I had to get up and find a glass of ice. And I was in business class. The meals were not for either my wife and I. She did not eat the entire 10 hour flight and I managed a bowl of soup. I was expecting much more from business with what we paid.

Planes were clean, no water or snacks on either flight.

Free & relatively fast Wi-Fi. Would've liked a wider drink selection.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

This flight is a quick way to get to Chicago, but a bit expensive.

Movies on my phone are great. It would be nice to have a gluten free snack option.

It was what i expected. I like the movies you can access from your phone. It would be nice if there was a gluten free snack offered. But I did bring my own snack knowing there would not be a gluten free option

The flight was peaceful, just s slight turbulence, pilots and crews were all nice and made a great job! Arrived safely in the Philippines. Thank you ya’ll!

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Awful, tons of delays, I got into Chicago multiple hours late meaning I hit the very traffic I tried so desperately to avoid. Just empty apologies from American Airlines text alerts. Trash behavior from a trash airline.

The flight attendants were very friendly, efficient, and helpful. The plane was ahead of schedule, and it all went very smoothly. Thank you.

They lost my baggage and I am still struggling to the information and update

We got delayed getting out of DFW for broken overhead bins. Once the flight got underway the captain kept the seatbelt sign lit the entire flight despite little perceptible turbulence, preventing use of the rest rooms and any sort of refreshment service in the main cabin.

Flight delays for communication overall not a good experience uncomfortable on the plane. Person in front of me reclined his seat, putting them inches from my lap.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

Everything you need to know for your flight to Las Vegas

Cabin class types available on flights from St. Louis to Las Vegas

Cabin classes available on flights from St. Louis to Las Vegas. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.