€114 Cheap Flights St. Louis to San Antonio (STL-SAT)

View €114 flight on Thu, 4 Sep 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to San Antonio International Airport (SAT)

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Cheap flights from St. Louis to San Antonio (STL-SAT)

Prices were available within the past 7 days and start at €114 for one-way flights and €227 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€227 Return, found 5 days ago
€227
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €227 found 5 days ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€227 Return, found 5 days ago
€227
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €227 found 5 days ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€253 Return, found 5 days ago
€253
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €253 found 5 days ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€254 Return, found 5 days ago
€254
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €254 found 5 days ago
United
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€254 Return, found 5 days ago
€254
Return
found 5 days ago
Select United flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €254 found 5 days ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€258 Return, found 5 days ago
€258
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €258 found 5 days ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€271 Return, found 5 days ago
€271
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €271 found 5 days ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€280 Return, found 5 days ago
€280
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €280 found 5 days ago
United
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€281 Return, found 5 days ago
€281
Return
found 5 days ago
Select United flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €281 found 5 days ago
Delta
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€284 Return, found 5 days ago
€284
Return
found 5 days ago
Select Delta flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €284 found 5 days ago
United
Thu, 4 Sep - Mon, 8 Sep
STL
St. Louis
SAT
San Antonio
€284 Return, found 5 days ago
€284
Return
found 5 days ago
Select United flight, departing Thu, 4 Sep from St. Louis to San Antonio, returning Mon, 8 Sep, priced at €284 found 5 days ago

Find the cheapest month to fly from St. Louis (STL) to San Antonio (SAT)

September is typically the cheapest month to fly

From €111 - €409 per traveller.

Graph displaying average flight prices per month

St. Louis to San Antonio route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
San Antonio Intl.
Return price
€227
Distance
1258 km
Average flight time
2 hours 7 mins

Perfect flights from St. Louis to San Antonio

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from St. Louis to San Antonio. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of San Antonio, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Lambert-St. Louis Intl. to San Antonio Intl. ticket options cater to your travel preferences, with incredible one-way fares from €114 and roundtrip prices from €227. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at San Antonio Intl. and explore San Antonio and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your STL to SAT travel arrangements today and embark on the journey of a lifetime in San Antonio.

Frequently asked questions

How much is a flight from STL to San Antonio Airport?
Round-trip journeys from STL to SAT start from €227. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert Field to San Antonio Intl. Airport (SAT)?
The majority of flights can be cancelled online, but whether you incur a fee varies between airlines. If you do need to cancel your break, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from St. Louis Lambert International Airport to SAT that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Lambert Field to San Antonio Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert-St. Louis Intl. Airport (STL) to San Antonio Airport?
A flight distance of just 1,250 kilometres separates St. Louis and San Antonio. Once you're up in the skies, you won't get a chance to do much more than read the magazine in your seat pocket.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to San Antonio Intl. Airport (SAT)?
Southwest Airlines (WN) will take you from STL to SAT safely and reliably. You can choose from 30 flights every month along this route.
Are STL to San Antonio Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to find a great last-minute deal from St. Louis Lambert International Airport to SAT, but it's also possible to miss out entirely! As many airlines release seats up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares carrier prices and updates flight deals all the time, so you can be sure you're always seeing the latest offers.

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