Is United Airlines the cheapest airline to fly with from St. Louis to Las Vegas?

With an average price of $429 return, United Airlines is not the cheapest airline to fly from St. Louis to Las Vegas with. Instead, for the lowest price, our data suggests flying with Spirit Airlines, where a return flight costs $181 on average.

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

In the last 3 days, the lowest price for a flight with United Airlines from St. Louis to Las Vegas was $115 for a return flight and $59 for a one-way flight.

Does United Airlines fly direct to Las Vegas from St. Louis?

No, United Airlines does not fly the route directly.

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

On average, the cheapest day of the week to fly from St. Louis to Las Vegas with United Airlines is Tuesday, when prices are around $116. The most expensive day is generally Thursday, where the average price is around $245.

What’s the cheapest month to fly from St. Louis to Las Vegas with United Airlines?

The cheapest month for United Airlines flights to Las Vegas from St. Louis is generally January, where plane tickets cost $176 on average. If possible, try to avoid the most expensive months of May and March, where tickets cost $315 and $370 respectively.

$174 Cheap United Airlines Flights from St. Louis to Las Vegas

Flights Deals

Cheap United Airlines Flight Deals from St. Louis to Las Vegas

Here are some of the best deals found on KAYAK recently from United Airlines for round-trip flights from St. Louis to Las Vegas 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.

Round-trip

One-way

Last minute

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

KAYAK's recommended round-trip United Airlines deals departing in the coming months from St. Louis to Las Vegas.

Discover the best prices for you by selecting your travel dates on KAYAK.

5:31 pm - 9:52 pmSTL-LAS

6h 21m1 stop

12:59 am - 9:34 amLAS-STL

6h 35m1 stop

$369United Airlines

Find Deal

Tue, Aug 5 - Fri, Aug 8

8:10 am - 12:52 pmSTL-LAS

6h 42m1 stop

7:00 am - 2:56 pmLAS-STL

5h 56m1 stop

$391United Airlines

Find Deal

Thu, Jun 12 - Sat, Jun 14

1:20 pm - 5:41 pmSTL-LAS

6h 21m1 stop

12:59 am - 9:31 amLAS-STL

6h 32m1 stop

$418United Airlines

Find Deal

Wed, Jul 2 - Sat, Jul 5

5:20 am - 8:44 amSTL-LAS

5h 24m1 stop

12:59 am - 10:39 amLAS-STL

7h 40m1 stop

$427United Airlines

Find Deal

Tue, May 27 - Mon, Jun 2

4:32 pm - 12:27 amSTL-LAS

9h 55m2 stops

12:59 am - 10:39 amLAS-STL

7h 40m1 stop

$432United Airlines

Find Deal

Tue, May 27 - Mon, Jun 2

8:48 am - 5:51 pmSTL-LAS

11h 03m2 stops

6:00 am - 4:31 pmLAS-STL

8h 31m2 stops

$437United Airlines

Find Deal

Wed, May 21 - Sun, May 25

1:39 pm - 5:10 pmSTL-LAS

5h 31m1 stop

12:59 am - 10:01 amLAS-STL

7h 02m1 stop

$440United Airlines

Find Deal

Sun, Sep 21 - Wed, Sep 24

5:49 pm - 10:41 pmSTL-LAS

6h 52m1 stop

12:59 am - 10:01 amLAS-STL

7h 02m1 stop

$449United Airlines

Find Deal

Thu, Sep 18 - Mon, Sep 22

5:20 am - 12:59 pmSTL-LAS

9h 39m1 stop

7:30 am - 8:48 pmLAS-STL

11h 18m2 stops

$452United Airlines

Find Deal

Mon, May 19 - Sat, May 24

7:10 pm - 12:45 amSTL-LAS

7h 35m1 stop

12:59 am - 12:20 pmLAS-STL

9h 21m2 stops

$454United Airlines

Find Deal

Thu, May 22 - Sat, May 24

Useful Info

Low season	September
High season	May
Cheapest flight	$174
Average price round-trip	$279

Best time to beat the crowds with an average 20% drop in price.

Most popular time to fly and prices are also 16% lower on average.

Flight from St. Louis to Las Vegas

(price for this month)

When to Book Flights with United Airlines from St. Louis to Las Vegas

Average price per month

Flight prices as travel date approaches

Is United Airlines the cheapest airline to fly with from St. Louis to Las Vegas?
With an average price of $429 return, United Airlines is not the cheapest airline to fly from St. Louis to Las Vegas with. Instead, for the lowest price, our data suggests flying with Spirit Airlines, where a return flight costs $181 on average.
What is the cheapest United Airlines flight from St. Louis to Las Vegas?
In the last 3 days, the lowest price for a flight with United Airlines from St. Louis to Las Vegas was $115 for a return flight and $59 for a one-way flight.
Does United Airlines fly direct to Las Vegas from St. Louis?
No, United Airlines does not fly the route directly.
What’s the cheapest day of the week to fly from St. Louis to Las Vegas with United Airlines?
On average, the cheapest day of the week to fly from St. Louis to Las Vegas with United Airlines is Tuesday, when prices are around $116. The most expensive day is generally Thursday, where the average price is around $245.
What’s the cheapest month to fly from St. Louis to Las Vegas with United Airlines?
The cheapest month for United Airlines flights to Las Vegas from St. Louis is generally January, where plane tickets cost $176 on average. If possible, try to avoid the most expensive months of May and March, where tickets cost $315 and $370 respectively.

7.4

GoodBased on 8,696 verified guest reviews

7.3Comfort

7.7Boarding

7.1Entertainment

6.6Food

8.1Crew

Pros +

Cons -

Show reviews that mention

8.0 Very good

Verified traveler, Apr 2025

XNA-DEN

Everything

10.0 Wonderful

David, Apr 2025

DEN-FLL

No issues, great flight, great crew

10.0 Wonderful

Vincenzo, Apr 2025

IAD-TYS

Friendly crew, all very smooth

8.0 Very good

Vincenzo, Apr 2025

FRA-IAD

Crew friendly and efficient. Nobody seated next to me

2.0 Poor

Brant, Apr 2025

YHZ-EWR

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

10.0 Wonderful

Verified traveler, Apr 2025

SFO-HKG

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

8.0 Very good

Verified traveler, Apr 2025

ORD-SFO

A bit rush for transit. Food and entertainment are not available

8.0 Very good

Verified traveler, Apr 2025

YUL-ORD

So far so good but food and entertainment are not available for this flight

10.0 Wonderful

Dr. Joseph, Apr 2025

ORD-YUL

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

8.0 Very good

Leslie, Apr 2025

SFO-BOS

Good

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

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$174 Find Cheap United Airlines Flights from St. Louis to Las Vegas

Search hundreds of travel sites at once for deals on United Airlines flights from St. Louis to Las Vegas

Cheap United Airlines Flight Deals from St. Louis to Las Vegas

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

Recent one-way United Airlines flight deals from St. Louis to Las Vegas

Recent last minute United Airlines flight deals from St. Louis to Las Vegas

Good to know

When to Book Flights with United Airlines from St. Louis to Las Vegas

FAQs for flying to Las Vegas with United Airlines

Is United Airlines the cheapest airline to fly with from St. Louis to Las Vegas?

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

Does United Airlines fly direct to Las Vegas from St. Louis?

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

What’s the cheapest month to fly from St. Louis to Las Vegas with United Airlines?

United Airlines Customer Reviews

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

Other airlines flying from St. Louis to Las Vegas

Flight deals from the most popular airlines with KAYAK users flying the route

Cabin class types available on flights to Las Vegas

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

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The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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Top United Airlines flights

The most popular destinations for flights with United Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.