$100 Cheap Flights from San Antonio (SAT) to Las Vegas (LAS)

View $100 flight on Mon, Apr 20, 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • 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 $100 for one-way flights and $200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Apr 20 - Fri, Apr 24
SAT
San Antonio
LAS
Las Vegas
$200 Roundtrip, just found
$200
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Apr 20 from San Antonio to Las Vegas, returning Fri, Apr 24, priced at $200 just found
Frontier Airlines
Mon, Apr 20 - Fri, Apr 24
SAT
San Antonio
LAS
Las Vegas
$204 Roundtrip, just found
$204
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Apr 20 from San Antonio to Las Vegas, returning Fri, Apr 24, priced at $204 just found
Frontier Airlines
Tue, May 5 - Tue, May 12
SAT
San Antonio
LAS
Las Vegas
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 5 from San Antonio to Las Vegas, returning Tue, May 12, priced at $208 just found
Frontier Airlines
Tue, Mar 31 - Thu, Apr 2
SAT
San Antonio
LAS
Las Vegas
$209 Roundtrip, found 3 hours ago
$209
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Tue, Mar 31 from San Antonio to Las Vegas, returning Thu, Apr 2, priced at $209 found 3 hours ago
Frontier Airlines
Tue, Apr 7 - Wed, Apr 8
SAT
San Antonio
LAS
Las Vegas
$210 Roundtrip, just found
$210
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Apr 7 from San Antonio to Las Vegas, returning Wed, Apr 8, priced at $210 just found
Spirit Airlines
Wed, Apr 8 - Fri, Apr 10
SAT
San Antonio
LAS
Las Vegas
$212 Roundtrip, just found
$212
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Apr 8 from San Antonio to Las Vegas, returning Fri, Apr 10, priced at $212 just found
Spirit Airlines
Wed, Apr 8 - Sat, Apr 11
SAT
San Antonio
LAS
Las Vegas
$214 Roundtrip, just found
$214
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Apr 8 from San Antonio to Las Vegas, returning Sat, Apr 11, priced at $214 just found
Southwest Airlines
Wed, May 20 - Wed, May 27
SAT
San Antonio
LAS
Las Vegas
$343 Roundtrip, just found
$343
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, May 20 from San Antonio to Las Vegas, returning Wed, May 27, priced at $343 just found
American Airlines
Wed, May 20 - Wed, May 27
SAT
San Antonio
LAS
Las Vegas
$353 Roundtrip, just found
$353
Roundtrip
just found
Select American Airlines flight, departing Wed, May 20 from San Antonio to Las Vegas, returning Wed, May 27, priced at $353 just found
Delta
Wed, May 20 - Wed, May 27
SAT
San Antonio
LAS
Las Vegas
$353 Roundtrip, just found
$353
Roundtrip
just found
Select Delta flight, departing Wed, May 20 from San Antonio to Las Vegas, returning Wed, May 27, priced at $353 just found

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

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 $245
LAS
McCarran Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $245

Frequently asked questions

How much does a flight from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) cost?
You can find cheap one-way flights from $100 and cheap return flights from $200 San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) with Expedia. One-way flights typically cost between $162 and $1122, and return flights often range between $283 and $1652. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The cheapest month to fly from SAT to LAS is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
2 airlines operate nonstop service from SAT to LAS:

  • Frontier Airlines operates around 9 direct flights from SAT to LAS every week
  • Spirit Airlines operates around 7 direct flights from SAT to LAS every week

What is the cheapest airline that flies from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
Spirit Airlines is one of the cheapest airlines offering nonstop flights from San Antonio Intl. (SAT) to Harry Reid Intl. (LAS), with round-trip tickets starting from around $104. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
To find a cheap flight from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The best airline to fly with from San Antonio, TX (SAT) to Las Vegas, NV (LAS) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. American Airlines offers the most daily flights from SAT to LAS, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
You can find approximately 5 nonstop flights per day from San Antonio Intl. (SAT) to Harry Reid International Airport (LAS). For more options, look at flights that include layovers.
What is the earliest flight from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The earliest flight from San Antonio International Airport (SAT) to Harry Reid International Airport (LAS) usually departs at 5:00 AM, operated by American Airlines. This seasonal service is available in August, giving you a head start on your Las Vegas adventure. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
For flights from San Antonio, TX (SAT) to Las Vegas, NV (LAS), the most popular departure times are in the early morning, from 6am to 9am. This accounts for around 22% of total traffic. Many major carriers, including American Airlines, Southwest Airlines, and United Airlines, offer flights during this window. Many travelers prefer this time because it allows them to arrive in Las Vegas early and enjoy a full day of activities.
How long does it take to fly from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
Direct flights from SAT to LAS usually take about 3 hours, traveling roughly 1,067 miles. If you opt for a connecting flight, expect to add around 4 hours 50 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
First class is available on flights from SAT to LAS. First class cabins are available on:

  • American Airlines
  • United Airlines
  • Delta Air Lines
  • Spirit Airlines

How do I earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) flight with Expedia?
It's easy to earn miles on a San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Las Vegas from San Antonio Intl. (SAT)?
If you're planning to travel to Las Vegas from San Antonio Intl. (SAT), you can fly into Harry Reid International Airport (LAS) Some flights may connect through major hubs like Love Field (DAL), Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN) before reaching Las Vegas. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) at the last minute?
Typically, booking a last minute flight from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) flight and hotel package?
Securing a San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) Las Vegas Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.)?
If you booked your San Antonio, TX (SAT-San Antonio Intl.) to Las Vegas, NV (LAS-Harry Reid Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, 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 if you'd like more information.

Travel information

Origin airport
San Antonio Intl.
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$200
Distance
1067 mi
Average flight time
1 hour 1 min

Book with confidence

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 April. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $100 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.

 

San Antonio to Las Vegas Flights

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.