$63+ Cheap flights from St. Louis to Las Vegas (STL - LAS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAS
Apr 5 — Apr 121
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Las Vegas with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Las Vegas Harry Reid Intl are usually found in January or February, booked 20 days in advance, depart on a Monday or Sunday and return on a Friday
Cheap flight deals from St. Louis to Las Vegas
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to Las VegasExplore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.
Explore the most affordable flight options available from St. Louis to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:19 pm
STL
- LAS
1 stop21h 23m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 3/5![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/3112:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/5![Frontier logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/316:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 3/5![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/106:05 am
LAS
- STL
Nonstop3h 22m
Frontier
Deal found 3/5![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sat 4/187:00 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 3/3![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:17 pm
STL
- LAS
1 stop12h 47m
Frontier
Sat 5/99:44 am
LAS
- STL
1 stop7h 28m
Frontier
Deal found 3/5![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/249:20 pm
LAS
- STL
1 stop20h 12m
Frontier
Deal found 3/3![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/2412:59 am
LAS
- STL
1 stop16h 33m
Frontier
Deal found 3/5![Frontier logo]()
$154
This Super.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/2412:59 am
LAS
- STL
1 stop6h 50m
Frontier
Deal found 3/2![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sun 4/512:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/3![Frontier logo]()
$158
Best flights from St. Louis to Las VegasDiscover carefully curated flight deals from St. Louis to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 6, 2026.
Discover carefully curated flight deals from St. Louis to Las Vegas that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 6, 2026.
This United Airlines deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:45 am
STL
- LAS
2 stops11h 38m
United Airlines
Sat 5/910:46 am
LAS
- STL
2 stops7h 57m
United Airlines
Deal found 3/2![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/207:50 pm
STL
- LAS
1 stop5h 25m
Southwest
Sun 4/268:45 pm
LAS
- STL
Nonstop3h 10m
Southwest
Deal found 3/4![Southwest logo]()
$421
This Delta deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/103:05 pm
STL
- LAS
1 stop7h 19m
Delta
Sat 3/141:20 pm
LAS
- STL
1 stop6h 11m
Delta
Deal found 3/2![Delta logo]()
$471
This United Airlines deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/202:35 pm
STL
- LAS
1 stop6h 32m
United Airlines
Sat 5/2312:59 am
LAS
- STL
1 stop7h 08m
United Airlines
Deal found 3/1![United Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/172:40 pm
STL
- LAS
2 stops11h 18m
United Airlines
Sat 4/186:00 am
LAS
- STL
2 stops12h 54m
United Airlines
Deal found 3/3![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/99:40 pm
STL
- LAS
Nonstop3h 30m
Southwest
Sat 4/115:45 pm
LAS
- STL
Nonstop3h 15m
Southwest
Deal found 3/5![Southwest logo]()
$423
This Southwest deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:00 pm
STL
- LAS
Nonstop3h 30m
Southwest
Sat 4/255:45 pm
LAS
- STL
Nonstop3h 15m
Southwest
Deal found 3/1![Southwest logo]()
$425
This United Airlines deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/78:54 am
STL
- LAS
2 stops10h 58m
United Airlines
Thu 4/910:50 am
LAS
- STL
2 stops8h 23m
United Airlines
Deal found 3/4![United Airlines logo]()
$401
This Southwest deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:25 am
STL
- LAS
2 stops7h 45m
Southwest
Mon 4/63:35 pm
LAS
- STL
2 stops6h 10m
Southwest
Deal found 3/3![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/35:25 am
STL
- LAS
Nonstop3h 45m
Southwest
Sun 4/56:30 pm
LAS
- STL
Nonstop3h 10m
Southwest
Deal found 3/1![Southwest logo]()
$458
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:10 am
STL
- LAS
2 stops11h 06m
United Airlines
Wed 6/312:36 am
LAS
- STL
2 stops11h 40m
United Airlines
Deal found 3/5![United Airlines logo]()
$464
Last-minute flights from St. Louis to Las VegasDiscover last-minute flight deals from St. Louis to Las Vegas. Data last updated March 6, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Las Vegas. Data last updated March 6, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/2412:59 am
LAS
- STL
1 stop6h 50m
Frontier
Deal found 3/2![Frontier logo]()
$157
This Cheapflightsfares deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/316:05 am
LAS
- STL
Nonstop3h 14m
Frontier
Deal found 3/5![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/298:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Tue 3/3112:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/5![Frontier logo]()
$146
This Frontier deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Thu 4/97:00 am
LAS
- STL
Nonstop3h 19m
Frontier
Deal found 3/5![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/210:12 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sun 4/512:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/3![Frontier logo]()
$158
This Frontier deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:17 pm
STL
- LAS
Nonstop3h 46m
Frontier
Thu 4/912:59 am
LAS
- STL
1 stop6h 49m
Frontier
Deal found 3/3![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:19 pm
STL
- LAS
1 stop21h 23m
Frontier
Thu 4/163:35 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 3/5![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Sat 4/187:00 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 3/3![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/2412:59 am
LAS
- STL
1 stop16h 33m
Frontier
Deal found 3/5![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Fri 4/249:20 pm
LAS
- STL
1 stop20h 12m
Frontier
Deal found 3/3![Frontier logo]()
$153
One-way flights from St. Louis to Las VegasSearch for one-way flight options from St. Louis to Las Vegas. Find affordable one-way fares based on user searches. Data last updated March 6, 2026.
Search for one-way flight options from St. Louis to Las Vegas. Find affordable one-way fares based on user searches. Data last updated March 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 3/3![Frontier logo]()
$63
This Cheapflightsfares deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:06 pm
STL
- LAS
Nonstop4h 02m
Frontier
Deal found 3/3![Frontier logo]()
$64
This Trip.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:17 pm
STL
- LAS
1 stop25h 54m
Frontier
Deal found 3/3![Frontier logo]()
$65
This Super.com deal was found by Cheapflights users on 3/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/612:17 pm
STL
- LAS
Nonstop3h 46m
Frontier
Deal found 3/2![Frontier logo]()
$68
This Frontier deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:14 pm
STL
- LAS
Nonstop3h 57m
Frontier
Deal found 3/4![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 3/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:12 pm
STL
- LAS
1 stop12h 52m
Frontier
Deal found 3/4![Frontier logo]()
$76
This Cheapflightsfares deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:55 pm
STL
- LAS
Nonstop3h 42m
Frontier
Deal found 3/3![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:06 pm
STL
- LAS
1 stop29h 30m
Frontier
Deal found 3/1![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 3/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:17 pm
STL
- LAS
1 stop29h 19m
Frontier
Deal found 3/3![Frontier logo]()
$82
Find flight deals from St. Louis to Las Vegas
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $144 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $301 |
Good round-trip deal | $226 or less |
Good one-way deal | $137 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 6, 2026.
Use the filters below to find and compare flights from St. Louis to Las Vegas that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Tue 4/14
7:45 am-5:23 pm
2 stops11h 38m
Las Vegas Harry Reid Intl
Sat 5/9
10:46 am-8:43 pm
2 stops7h 57m
$323
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 5/20
2:35 pm-7:07 pm
1 stop6h 32m
Las Vegas Harry Reid Intl
Sat 5/23
12:59 am-10:07 am
1 stop7h 08m
$324
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 4/17
2:40 pm-11:58 pm
2 stops11h 18m
Las Vegas Harry Reid Intl
Sat 4/18
6:00 am-8:54 pm
2 stops12h 54m
$343
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Tue 4/7
8:54 am-5:52 pm
2 stops10h 58m
Las Vegas Harry Reid Intl
Thu 4/9
10:50 am-9:13 pm
2 stops8h 23m
$401
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Mon 4/20
7:50 pm-11:15 pm
1 stop5h 25m
Las Vegas Harry Reid Intl
Sun 4/26
8:45 pm-1:55 am
Nonstop3h 10m
$421
Quickest round-trip
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Thu 4/9
9:40 pm-11:10 pm
Nonstop3h 30m
Las Vegas Harry Reid Intl
Sat 4/11
5:45 pm-11:00 pm
Nonstop3h 15m
$423
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Wed 4/22
9:00 pm-10:30 pm
Nonstop3h 30m
Las Vegas Harry Reid Intl
Sat 4/25
5:45 pm-11:00 pm
Nonstop3h 15m
$425
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Sat 4/4
8:25 am-2:10 pm
2 stops7h 45m
Las Vegas Harry Reid Intl
Mon 4/6
3:35 pm-11:45 pm
2 stops6h 10m
$454
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Fri 4/3
5:25 am-7:10 am
Nonstop3h 45m
Las Vegas Harry Reid Intl
Sun 4/5
6:30 pm-11:40 pm
Nonstop3h 10m
$458
St. LouisLas Vegas
STL - LAS
STLLAS
Lambert-St Louis
Sun 5/31
5:10 am-2:16 pm
2 stops11h 06m
Las Vegas Harry Reid Intl
Wed 6/3
12:36 am-2:16 pm
2 stops11h 40m
$464
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Las Vegas
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Las Vegas in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Las Vegas flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Las Vegas flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Las Vegas
Have a flexible travel schedule? Discover the best time to fly to Las Vegas from St. Louis with our price prediction graph.
STL-LAS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Las Vegas
Prices
Delays
How far ahead should I book a flight from St. Louis to Las Vegas?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Las Vegas. Price data was last updated on February 27, 2026.
Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Las Vegas. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from St. Louis to Las Vegas?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Las Vegas (average of $78). Flying from St. Louis to Las Vegas in July is currently the most expensive (average of $189). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to LAS?
Find hourly flight availability from St. Louis to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 6, 2026.
It’s typically best to fly out from St. Louis to Las Vegas in the evening. Doing so could potentially save you 49% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from St. Louis to Las Vegas?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Las Vegas. Price data was last updated on February 21, 2026.
Travelers seeking maximum savings on their St. Louis to Las Vegas flight should consider departing on Monday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from St. Louis to Las Vegas delayed?
About 16% of weekly flights between St. Louis and Las Vegas have experienced delays in the past year, with the average delay time being 129 minutes.
What is the most punctual flight time for St. Louis to Las Vegas flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on St. Louis to Las Vegas flights?
Over the last year, Southwest have had the lowest number of delays on this route, with just 16% of flights being delayed.
The best insider tips for St. Louis to Las Vegas flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Las Vegas trip
Our travel experts
Reviews of airlines servicing Las Vegas
Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated March 6, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from St. Louis to Las Vegas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Food
7.0
Entertainment
7.5
Crew
8.6
Boarding
8.1
Overall
8.0
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
St. Louis to Las Vegas Travel Guide
Las Vegas, with its wild atmosphere and brilliant lights, is a thrilling spot for a vacation. Whether you're visiting with the family or coming with friends, the city's energy and exuberance is sure to draw you in. From the always-busy casinos of the Strip to the classic style of Fremont Street, every inch of the city is designed to provide fun-filled memories to last a lifetime. Best of all? The Vegas attractions all sit just a quick flight from St. Louis.
Every inch of Las Vegas is designed to make an impression. Start your trip off with a bang by jumping off the edge of the Stratosphere casino and falling 829 feet on the heart-pounding Sky Jump. Closer to the south end of the Strip, get a thrill on the roller coaster that runs over the New York New York casino. Want to stay close to the earth? Opt for a boat ride through the canals of the elegant Venetian hotel and casino. When you're ready for a break from gambling, check out the Hispanic Museum of Nevada or go for a hair-raising spin in a stock care around the track of the Las Vegas Motor Speedway.
Check out prices for your trip to Las Vegas today using the Cheapflights smart search engine. Simply enter your dates to see all available times and prices.
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Las Vegas?
Book flights to Las Vegas if you plan to visit one of these locationsParadise
Henderson
Mesquite
North Las Vegas
Kingman
Winchester
Boulder City
Needles
Sunrise Manor
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St. Louis and Las Vegas flights
Browse other St. Louis and Las Vegas flight options. Last updated on March 6, 2026.
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Top 7 airlines flying from St. Louis to Las Vegas
Discover the top 7 airlines that operate flights from St. Louis to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$100 | Average$209 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$109 | Average$244 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$269 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$205 | Average$470 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$224 | Average$391 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$375 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$268 | Average$467 | FlexibilityNo cancel fee | On-time63% |