$139 Cheap Flights from St. Thomas (STT) to San Antonio (SAT)

View $139 flight on Thu, Jan 22, 2026Opens in a new window

Popular airlines from Cyril E. King Airport (STT) to San Antonio International Airport (SAT)

Cheap Flights from St. Thomas to San Antonio (STT-SAT)

Prices were available within the past 7 days and start at $139 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Fri, Feb 6 - Mon, Feb 9
STT
St. Thomas
SAT
San Antonio
$275 Roundtrip, found 3 days ago
$275
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Feb 6 from St. Thomas to San Antonio, returning Mon, Feb 9, priced at $275 found 3 days ago
Spirit Airlines
Fri, Feb 6 - Mon, Feb 9
STT
St. Thomas
SAT
San Antonio
$280 Roundtrip, found 3 days ago
$280
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Fri, Feb 6 from St. Thomas to San Antonio, returning Mon, Feb 9, priced at $280 found 3 days ago
American Airlines
Fri, Dec 12 - Sat, Jan 3
STT
St. Thomas
SAT
San Antonio
$349 Roundtrip, found 4 hours ago
$349
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Fri, Dec 12 from St. Thomas to San Antonio, returning Sat, Jan 3, priced at $349 found 4 hours ago
United
Sat, Nov 15 - Sat, Dec 6
STT
St. Thomas
SAT
San Antonio
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select United flight, departing Sat, Nov 15 from St. Thomas to San Antonio, returning Sat, Dec 6, priced at $349 found 1 day ago
Spirit Airlines
Mon, Jan 12 - Mon, Jan 19
STT
St. Thomas
SAT
San Antonio
$367 Roundtrip, found 1 day ago
$367
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Mon, Jan 12 from St. Thomas to San Antonio, returning Mon, Jan 19, priced at $367 found 1 day ago
Spirit Airlines
Fri, Dec 12 - Sat, Jan 3
STT
St. Thomas
SAT
San Antonio
$370 Roundtrip, found 4 hours ago
$370
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Fri, Dec 12 from St. Thomas to San Antonio, returning Sat, Jan 3, priced at $370 found 4 hours ago
United
Sun, Dec 14 - Sat, Jan 3
STT
St. Thomas
SAT
San Antonio
$375 Roundtrip, found 10 hours ago
$375
Roundtrip
found 10 hours ago
Select United flight, departing Sun, Dec 14 from St. Thomas to San Antonio, returning Sat, Jan 3, priced at $375 found 10 hours ago
American Airlines
Tue, Jan 20 - Fri, Jan 23
STT
St. Thomas
SAT
San Antonio
$400 Roundtrip, found 7 hours ago
$400
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Jan 20 from St. Thomas to San Antonio, returning Fri, Jan 23, priced at $400 found 7 hours ago
Delta
Tue, Jan 20 - Sun, Feb 8
STT
St. Thomas
SAT
San Antonio
$429 Roundtrip, found 6 days ago
$429
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jan 20 from St. Thomas to San Antonio, returning Sun, Feb 8, priced at $429 found 6 days ago
Southwest Airlines
Fri, May 22 - Sat, May 30
STT
St. Thomas
SAT
San Antonio
$491 Roundtrip, found 2 days ago
$491
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, May 22 from St. Thomas to San Antonio, returning Sat, May 30, priced at $491 found 2 days ago

Find the cheapest month to fly from St. Thomas (STT) to San Antonio (SAT)

January is typically the cheapest month to fly

From $185 - $875 per traveler.
Flights from St. Thomas (STT) to San Antonio (SAT)
Origin airport
Cyril E. King
Destination airport
San Antonio Intl.
Airlines serving
American Airlines, Delta, Spirit Airlines, United
Roundtrip price
$274
Distance
2242 mi

St. Thomas to San Antonio Flights

The cheapest times to fly from St. Thomas 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 St. Thomas to San Antonio are during the month of February. You can find some of the cheapest flights from St. Thomas to San Antonio with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Thomas to San Antonio

Sunday is one of the best days to book for cheap flights from St. Thomas 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 St. Thomas 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 St. Thomas to San Antonio in 2025. You can also book with separate airlines for your outbound and return journeys, from $139 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 St. Thomas 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 St. Thomas 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 Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT) cost?
Grab a cheap one-way flight from $139 or cheap return flight from $275 from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT)?
February is the least expensive month to fly from STT to SAT. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT)?
To find the cheapest airline flying from STT to SAT, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT)?
Direct flights from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STT to SAT?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT)?
To reach San Antonio Intl. Airport (SAT) on schedule, select a flight that leaves from Cyril E. King Airport (STT) before 3 PM. The chance 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.
Is it cheaper to buy a plane ticket from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT) last-minute?
Holding off until just before your trip to book your flight from STT to SAT often results in higher prices. While you may come across some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule for a better chance of snagging a bargain.
Is it cheaper to book a STT to SAT flight and hotel package?
You can save money by booking a STT to SAT flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your preferred flights and accommodations, consider adding extras like car rentals, activities and tours.
Can I cancel or change the date of my flight from Cyril E. King Airport (STT) to San Antonio Intl. Airport (SAT)?
Generally, it's possible to reschedule or cancel your STT to SAT flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.