$99 Cheap Flights from Houston (IAH) to San Antonio (SAT)

View $99 flight on Mon, Jun 9, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Houston to San Antonio (IAH-SAT)

Prices were available within the past 7 days and start at $99 for one-way flights and $114 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 25 - Sat, Sep 27
IAH
Houston
SAT
San Antonio
$114 Roundtrip, found 3 days ago
$114
Roundtrip
found 3 days ago
Select United flight, departing Thu, Sep 25 from Houston to San Antonio, returning Sat, Sep 27, priced at $114 found 3 days ago
United
Thu, May 22 - Sat, May 24
IAH
Houston
SAT
San Antonio
$116 Roundtrip, found 4 days ago
$116
Roundtrip
found 4 days ago
Select United flight, departing Thu, May 22 from Houston to San Antonio, returning Sat, May 24, priced at $116 found 4 days ago
United
Tue, May 20 - Mon, May 26
IAH
Houston
SAT
San Antonio
$137 Roundtrip, found 3 days ago
$137
Roundtrip
found 3 days ago
Select United flight, departing Tue, May 20 from Houston to San Antonio, returning Mon, May 26, priced at $137 found 3 days ago
United
Tue, Jun 3 - Tue, Jun 17
IAH
Houston
SAT
San Antonio
$140 Roundtrip, found 3 days ago
$140
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jun 3 from Houston to San Antonio, returning Tue, Jun 17, priced at $140 found 3 days ago
United
Sat, May 17 - Tue, May 20
IAH
Houston
SAT
San Antonio
$151 Roundtrip, found 4 days ago
$151
Roundtrip
found 4 days ago
Select United flight, departing Sat, May 17 from Houston to San Antonio, returning Tue, May 20, priced at $151 found 4 days ago
American Airlines
Thu, Sep 25 - Sat, Sep 27
IAH
Houston
SAT
San Antonio
$168 Roundtrip, found 3 days ago
$168
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Sep 25 from Houston to San Antonio, returning Sat, Sep 27, priced at $168 found 3 days ago
United
Sat, May 17 - Wed, May 21
IAH
Houston
SAT
San Antonio
$169 Roundtrip, found 3 days ago
$169
Roundtrip
found 3 days ago
Select United flight, departing Sat, May 17 from Houston to San Antonio, returning Wed, May 21, priced at $169 found 3 days ago
Spirit Airlines
Thu, May 8 - Thu, May 15
IAH
Houston
SAT
San Antonio
$181 Roundtrip, found 3 days ago
$181
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Thu, May 8 from Houston to San Antonio, returning Thu, May 15, priced at $181 found 3 days ago
Delta
Tue, Jul 1 - Sat, Jul 5
IAH
Houston
SAT
San Antonio
$331 Roundtrip, found 5 hours ago
$331
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Jul 1 from Houston to San Antonio, returning Sat, Jul 5, priced at $331 found 5 hours ago
Alaska Airlines
Fri, May 9 - Fri, May 16
IAH
Houston
SAT
San Antonio
$857 Roundtrip, found 2 days ago
$857
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, May 9 from Houston to San Antonio, returning Fri, May 16, priced at $857 found 2 days ago
Flights from Houston (IAH) to San Antonio (SAT)
Origin airport
George Bush Intercontinental
Destination airport
San Antonio Intl.
Airlines serving
American Airlines, Delta, Spirit Airlines, United
Roundtrip price
$97
Distance
190 mi

Houston to San Antonio Flights

The cheapest times to fly from Houston to San Antonio

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

 

The best time to book a flight from Houston to San Antonio

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

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 Houston to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $99 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 Houston to San Antonio 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 Houston to San Antonio 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 George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT) cost?
Cheap return fares from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT) start at $77. 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 United and Southwest Airlines flight leaving IAH on May 17 2025 and touching down at SAT. The price was last updated on April 27 2025 and has not changed since.
What is the cheapest month to fly from IAH to SAT?
The cheapest flights from IAH to SAT 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 George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
When departing from George Bush Intercontinental Airport (IAH), you can take a nonstop flight to San Antonio Intl. Airport (SAT) with United Airlines.
What is the cheapest airline that flies from IAH to SAT?
With prices as low as $39 for a one-way flight from IAH to SAT, United is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from IAH on June 24 2025. Prices were last updated on April 27 2025 and have not changed since.
How many flights per day from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
With an average of 7 nonstop flights that operate from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT) each day, you’ll be soaring through the skies in no time.
What are the most popular departure times for flights from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
Flights between IAH and SAT are busiest at 7 AM. If you want a more relaxed trip and possibly cheaper tickets, choose a departure that’s outside typical rush times.
What day of the week has the most flights from IAH to SAT?
Fly on a Saturday if you’re after the biggest selection of flights from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT).
What is the earliest flight from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
The first flight of the day out of George Bush Intercontinental Airport (IAH) is at around 7:35AM UTC-6. Board this plane and you’ll touch down at San Antonio Intl. Airport (SAT) at approximately 8:47AM UTC-6. The total travel time is 1h 12m.
How long does it take to fly from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
It takes around 1 hour and 11 minutes to fly the 190 mi from IAH to SAT.
What airline has the least delays from IAH to SAT?
Consider booking with United Airlines if you’d like to go straight from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT) without any delays. This carrier has the strongest track record for punctuality, with an on-time score of 80%. Want real-time updates? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
To arrive at San Antonio Intl. Airport (SAT) without delays, opt for a flight that takes off from George Bush Intercontinental Airport (IAH) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 San Antonio from George Bush Intercontinental Airport (IAH)?
San Antonio Intl. Airport (SAT) is the only airport in San Antonio with direct flights from George Bush Intercontinental Airport (IAH). Consider your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT) last-minute?
Booking your flight from IAH to SAT shortly before your getaway is usually more expensive. But if there’s some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book an IAH to SAT flight and hotel package?
Opting for an IAH to SAT flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our impressive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to San Antonio Intl. Airport (SAT)?
In most instances, you can cancel or reschedule your IAH to SAT flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s rules and fees on flight changes, or if you’d like more information, visit our Customer Service portal.

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*Available to One Key members.