$43 Cheap Flights from San Antonio (SAT) to Las Vegas (LAS)

View $43 flight on Mon, Aug 18, 2025Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Harry Reid Intl. Airport (LAS)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from San Antonio to Las Vegas (SAT-LAS)

Prices were available within the past 7 days and start at $43 for one-way flights and $104 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Tue, Aug 12 - Thu, Aug 14
SAT
San Antonio
LAS
Las Vegas
$104 Roundtrip, just found
$104
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Aug 12 from San Antonio to Las Vegas, returning Thu, Aug 14, priced at $104 just found
Spirit Airlines
Tue, Aug 12 - Thu, Aug 14
SAT
San Antonio
LAS
Las Vegas
$108 Roundtrip, just found
$108
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Aug 12 from San Antonio to Las Vegas, returning Thu, Aug 14, priced at $108 just found
Frontier Airlines
Tue, Aug 12 - Thu, Aug 14
SAT
San Antonio
LAS
Las Vegas
$112 Roundtrip, just found
$112
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Aug 12 from San Antonio to Las Vegas, returning Thu, Aug 14, priced at $112 just found
Spirit Airlines
Mon, Aug 18 - Sat, Aug 23
SAT
San Antonio
LAS
Las Vegas
$114 Roundtrip, found 1 hour ago
$114
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Mon, Aug 18 from San Antonio to Las Vegas, returning Sat, Aug 23, priced at $114 found 1 hour ago
Spirit Airlines
Mon, Aug 18 - Sat, Aug 23
SAT
San Antonio
LAS
Las Vegas
$114 Roundtrip, found 1 hour ago
$114
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Mon, Aug 18 from San Antonio to Las Vegas, returning Sat, Aug 23, priced at $114 found 1 hour ago
Spirit Airlines
Tue, Aug 12 - Thu, Aug 14
SAT
San Antonio
LAS
Las Vegas
$115 Roundtrip, just found
$115
Roundtrip
just found
Select Spirit Airlines flight, departing Tue, Aug 12 from San Antonio to Las Vegas, returning Thu, Aug 14, priced at $115 just found
Spirit Airlines
Mon, Aug 18 - Thu, Aug 21
SAT
San Antonio
LAS
Las Vegas
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Spirit Airlines flight, departing Mon, Aug 18 from San Antonio to Las Vegas, returning Thu, Aug 21, priced at $119 just found
Southwest Airlines
Mon, Aug 18 - Thu, Aug 28
SAT
San Antonio
LAS
Las Vegas
$189 Roundtrip, found 13 hours ago
$189
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Mon, Aug 18 from San Antonio to Las Vegas, returning Thu, Aug 28, priced at $189 found 13 hours ago
Delta
Wed, Sep 24 - Thu, Sep 25
SAT
San Antonio
LAS
Las Vegas
$205 Roundtrip, found 2 hours ago
$205
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed, Sep 24 from San Antonio to Las Vegas, returning Thu, Sep 25, priced at $205 found 2 hours ago
United
Wed, Sep 10 - Sat, Sep 13
SAT
San Antonio
LAS
Las Vegas
$287 Roundtrip, just found
$287
Roundtrip
just found
Select United flight, departing Wed, Sep 10 from San Antonio to Las Vegas, returning Sat, Sep 13, priced at $287 just found

Find the cheapest month to fly from San Antonio (SAT) to Las Vegas (LAS)

September is typically the cheapest month to fly

From $46 - $123 per traveler.

Graph displaying average flight prices per month

Alternative airports near Las Vegas

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

Select flight to McCarran Intl. LAS. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $104
LAS
McCarran Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $104
Flights from San Antonio (SAT) to Las Vegas (LAS)
Origin airport
San Antonio Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$104
Distance
1067 mi
Average flight time
1 hour 43 mins

San Antonio to Las Vegas Flights

The cheapest times to fly from San Antonio to Las Vegas

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 San Antonio to Las Vegas are during the month of August. You can find some of the cheapest flights from San Antonio to Las Vegas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to Las Vegas

Sunday is one of the best days to book for cheap flights from San Antonio to Las Vegas: 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 San Antonio to Las Vegas

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 San Antonio to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $43 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 San Antonio to Las Vegas 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 San Antonio to Las Vegas 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.

 

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS) cost?
Find affordable return tickets from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS) starting at $105. Grab a seat and get ready to go. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving SAT on August 5 2025 and touching down at LAS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SAT to LAS?
The cheapest flights from SAT to LAS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
Pick from 3 carriers that operate direct flights from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS). Including:

  • Southwest Airlines
  • Spirit Airlines
  • Frontier Airlines

What is the cheapest airline that flies from SAT to LAS?
Jet off from SAT to LAS with Frontier Airlines. This carrier currently has the cheapest one-way ticket on this route, starting at $52. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SAT on August 12 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
Each day, an average of 5 nonstop flights take off from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS). Select the departure time that best fits your schedule.
What are the most popular departure times for flights from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
The 5 AM departures from SAT to LAS are the busiest. These flights can come with a higher price due to their popularity. If you want to save on your trip, book during off-peak hours.
What day of the week has the most flights from SAT to LAS?
If you depart on a Friday, you'll get the greatest range of options for flights from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS).
What is the earliest flight from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
Take the earliest flight at around 5:45AM UTC-6, heading out of San Antonio Intl. Airport (SAT). You'll be in the air for about 3h 5m, reaching Harry Reid Intl. Airport (LAS) at approximately 6:50AM UTC-8.
How long does it take to fly from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
The average flight time from SAT to LAS is 3 hours and 2 minutes, covering a distance of 1,050 mi.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
To arrive at Harry Reid Intl. Airport (LAS) on time, opt for a flight that leaves from San Antonio Intl. Airport (SAT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Las Vegas from San Antonio Intl. Airport (SAT)?
Browse your flight options from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS). This is the only Las Vegas airport you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS) last-minute?
Waiting until just before your trip to book a ticket from SAT to LAS generally means paying more. While you may come across some last-minute discounts, they aren't always guaranteed. Keep your travel schedule open to maximize your chances of scoring a bargain.
Is it cheaper to book a SAT to LAS flight and hotel package?
Compared with arranging hotels and flights separately, booking a SAT to LAS flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of planning your trip. Just secure your flights and choose from our wide range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS)?
If you reserved your SAT to LAS flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

Explore a world of travel with Expedia

*Available to One Key members.