Cheap flights from St. Louis to San Antonio (STL - SAT) from $76

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight to San Antonio departing on 4/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SAT
Mar 5 — Mar 121

The best prices from Lambert-St Louis to San Antonio are usually found in January or February, booked 47 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Antonio (SAT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 29, 2024.

Popular in

March

Cheapest in

January

Round-trip from

$289

One-way from

$99
High demand for flights, 22% potential price rise
Best time to find cheap flights, 23% potential price drop
From Lambert-St Louis to San Antonio
One-way flight from Lambert-St Louis to San Antonio

What is the cheapest day to fly round-trip from St. Louis to San Antonio?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 51% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from St. Louis to San Antonio?

Travelers have found it’s best to book a flight 48 days in advance to save up to 43% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 48 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to San Antonio 1-2 weeks in advance for as low as $188, or $315 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to San Antonio?

January can be a great time to fly to San Antonio from St. Louis with a flight ticket averaging about $358. Cheapflights users have found deals in the month of January for as cheap as $154. The most expensive prices can be found in the month of March.

When is the cheapest time to fly from St. Louis to San Antonio (STL - SAT)?

When flying from St. Louis to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 10% versus a flight in the morning.

Cheap Frontier flights from St. Louis to San Antonio

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and San Antonio. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
Check out some of the cheapest Frontier flights we've come across from St. Louis to San Antonio. Come back soon if you're not finding the exact deal you're looking for.
Sun 4/1411:21 pmSTL - SAT
1 stop21h 15mFrontier
Wed 4/172:18 pmSAT - STL
1 stop6h 35mFrontier
Deal found 2/28$137
Wed 3/67:27 pmSTL - SAT
1 stop12h 07mFrontier
Tue 3/1210:08 pmSAT - STL
1 stop12h 15mFrontier
Deal found 2/29$158
Sun 4/711:15 pmSTL - SAT
1 stop21h 19mFrontier
Fri 4/129:19 pmSAT - STL
1 stop12h 59mFrontier
Deal found 2/29$161
Thu 4/1810:56 pmSTL - SAT
1 stop21h 22mFrontier
Mon 4/227:57 pmSAT - STL
1 stop11h 16mFrontier
Deal found 2/28$162
Wed 3/277:37 pmSTL - SAT
1 stop26h 15mFrontier
Wed 4/310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/28$173
Sun 4/147:16 pmSTL - SAT
1 stop23h 50mFrontier
Sun 4/2111:56 amSAT - STL
1 stop10h 01mFrontier
Deal found 2/28$174
Thu 5/210:59 pmSTL - SAT
1 stop21h 19mFrontier
Sun 5/511:56 amSAT - STL
1 stop10h 01mFrontier
Deal found 2/28$176
Tue 3/1910:04 pmSTL - SAT
1 stop22h 58mFrontier
Mon 3/259:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/29$177
Thu 3/2811:15 pmSTL - SAT
1 stop20h 25mFrontier
Wed 4/310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/28$181

Cheap Delta flights from St. Louis to San Antonio

Explore cheap flight options specifically provided by Delta for the route between St. Louis and San Antonio. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
To aid your search, here are some of the cheapest Delta flights we've found from St. Louis to San Antonio. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 4/227:03 pmSTL - SAT
1 stop5h 35mDelta
Fri 4/266:15 pmSAT - STL
1 stop5h 31mDelta
Deal found 2/29$178
Tue 4/233:06 pmSTL - SAT
1 stop7h 40mDelta
Wed 4/242:31 pmSAT - STL
1 stop6h 46mDelta
Deal found 2/27$198

Cheap St. Louis to San Antonio flights in February & March 2024

Find cheap flight options from St. Louis to San Antonio specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Prices were last updated on February 29, 2024.
These are some of the most attractive deals on flights from St. Louis to San Antonio in 2024. Check back in a little while for more flight options.
Wed 3/67:27 pmSTL - SAT
1 stop12h 07mFrontier
Tue 3/1210:08 pmSAT - STL
1 stop12h 15mFrontier
Deal found 2/29$158
Wed 3/277:37 pmSTL - SAT
1 stop26h 15mFrontier
Wed 4/310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/28$173
Tue 3/1910:04 pmSTL - SAT
1 stop22h 58mFrontier
Mon 3/259:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/29$177
Thu 3/2811:15 pmSTL - SAT
1 stop20h 25mFrontier
Wed 4/310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/28$181
Sat 3/237:37 pmSTL - SAT
1 stop26h 40mMultiple Airlines
Mon 3/259:29 pmSAT - STL
1 stop16h 11mMultiple Airlines
Deal found 2/28$205
Wed 3/209:08 pmSTL - SAT
1 stop13h 29mSpirit Airlines
Sat 3/236:05 amSAT - STL
1 stop11h 26mSpirit Airlines
Deal found 2/29$206
Fri 3/2910:57 amSTL - SAT
1 stop9h 37mSpirit Airlines
Fri 4/59:29 pmSAT - STL
1 stop13h 14mSpirit Airlines
Deal found 2/28$210
Wed 3/209:08 pmSTL - SAT
1 stop13h 29mSpirit Airlines
Sat 3/236:05 amSAT - STL
1 stop11h 26mSpirit Airlines
Deal found 2/28$211
Wed 3/279:08 pmSTL - SAT
1 stop13h 29mSpirit Airlines
Wed 4/35:20 pmSAT - STL
2 stops24h 19mSpirit Airlines
Deal found 2/27$215

St. Louis to San Antonio 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and San Antonio in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
These are some of the most attractive deals on flights from St. Louis to San Antonio in 2024. Check back in a little while for more flight options.
Sun 4/1411:21 pmSTL - SAT
1 stop21h 15mFrontier
Wed 4/172:18 pmSAT - STL
1 stop6h 35mFrontier
Deal found 2/28$137
Wed 4/1011:33 amSTL - SAT
1 stop9h 19mSpirit Airlines
Sun 4/1411:36 amSAT - STL
1 stop6h 42mSpirit Airlines
Deal found 2/27$148
Wed 3/67:27 pmSTL - SAT
1 stop12h 07mFrontier
Tue 3/1210:08 pmSAT - STL
1 stop12h 15mFrontier
Deal found 2/29$158
Sun 4/711:15 pmSTL - SAT
1 stop21h 19mFrontier
Fri 4/129:19 pmSAT - STL
1 stop12h 59mFrontier
Deal found 2/29$161
Thu 4/1810:56 pmSTL - SAT
1 stop21h 22mFrontier
Mon 4/227:57 pmSAT - STL
1 stop11h 16mFrontier
Deal found 2/28$162
Wed 5/225:00 amSTL - SAT
1 stop8h 42mMultiple Airlines
Sat 5/256:44 pmSAT - STL
1 stop15h 34mMultiple Airlines
Deal found 2/27$172
Wed 3/277:37 pmSTL - SAT
1 stop26h 15mFrontier
Wed 4/310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/28$173
Sun 4/147:16 pmSTL - SAT
1 stop23h 50mFrontier
Sun 4/2111:56 amSAT - STL
1 stop10h 01mFrontier
Deal found 2/28$174
Mon 4/17:37 pmSTL - SAT
1 stop25h 31mMultiple Airlines
Tue 4/308:41 pmSAT - STL
1 stop14h 02mMultiple Airlines
Deal found 2/28$175

St. Louis to San Antonio flights leaving soon

Find last-minute flight options from St. Louis to San Antonio for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
Users seeking a last-minute flight from St. Louis to San Antonio should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Wed 3/67:27 pmSTL - SAT
1 stop12h 07mFrontier
Tue 3/1210:08 pmSAT - STL
1 stop12h 15mFrontier
Deal found 2/29$158
Sat 3/911:39 amSTL - SAT
1 stop9h 02mMultiple Airlines
Sun 3/1711:39 amSAT - STL
1 stop19h 44mMultiple Airlines
Deal found 2/27$242
Thu 3/711:15 pmSTL - SAT
1 stop20h 25mFrontier
Mon 3/119:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/28$253
Fri 3/88:24 pmSTL - SAT
1 stop23h 02mFrontier
Mon 3/119:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/27$263
Fri 3/86:18 pmSTL - SAT
1 stop27h 30mFrontier
Mon 3/119:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/28$264
Sun 3/1011:15 pmSTL - SAT
1 stop21h 19mFrontier
Wed 3/1310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/29$267
Fri 3/86:18 pmSTL - SAT
1 stop27h 30mFrontier
Mon 3/119:24 pmSAT - STL
1 stop23h 50mFrontier
Deal found 2/29$268
Wed 3/67:27 pmSTL - SAT
1 stop12h 07mFrontier
Wed 3/1310:02 pmSAT - STL
1 stop24h 13mFrontier
Deal found 2/29$284
Wed 3/69:08 pmSTL - SAT
1 stop13h 29mSpirit Airlines
Tue 3/128:41 pmSAT - STL
3 stops23h 32mSpirit Airlines
Deal found 2/29$294

One-way flights to San Antonio from St. Louis

Search for one-way flight options from St. Louis to San Antonio. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
If you're seeking multiple options on one-way flights from St. Louis to San Antonio, be sure to check out these deals, which are updated often. Those seeking round-trip flights from St. Louis to San Antonio should utilize the search form at the the top of the page.
Wed 4/1011:33 amSTL - SAT
1 stop9h 19mSpirit Airlines
Deal found 2/28$76
Thu 5/210:59 pmSTL - SAT
1 stop21h 19mFrontier
Deal found 2/28$79
Wed 3/277:37 pmSTL - SAT
1 stop26h 15mFrontier
Deal found 2/27$88
Fri 5/35:35 pmSTL - SAT
1 stop14h 45mFrontier
Deal found 2/28$90
Tue 4/236:04 amSTL - SAT
1 stop4h 51mDelta
Deal found 2/27$99
Fri 3/88:24 pmSTL - SAT
1 stop23h 02mFrontier
Deal found 2/29$122
Sat 3/911:39 amSTL - SAT
1 stop9h 02mSpirit Airlines
Deal found 2/27$131
Fri 5/35:35 pmSTL - SAT
2 stops21h 28mMultiple Airlines
Deal found 2/28$147
Sat 3/306:15 amSTL - SAT
1 stop7h 05mUnited Airlines
Deal found 2/28$172

Find flights from St. Louis to San Antonio within your budget

Customize your flight search to find flights from St. Louis to San Antonio that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$137 - $326

Route

Depart

Return

Price

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sun 4/14

1 stop21h 15m

San Antonio

Wed 4/17

1 stop6h 35m

$137

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 4/10

1 stop9h 19m

San Antonio

Sun 4/14

1 stop6h 42m

$148

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sun 4/7

1 stop21h 19m

San Antonio

Fri 4/12

1 stop12h 59m

$161

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 4/18

1 stop21h 22m

San Antonio

Mon 4/22

1 stop11h 16m

$162

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 5/22

1 stop8h 42m

San Antonio

Sat 5/25

1 stop15h 34m

$172

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 4/1

1 stop25h 31m

San Antonio

Tue 4/30

1 stop14h 02m

$175

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 4/22

1 stop5h 35m

San Antonio

Fri 4/26

1 stop5h 31m

$178

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 3/29

1 stop4h 30m

San Antonio

Sun 3/31

1 stop4h 30m

$313

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sun 4/7

2 stops15h 05m

San Antonio

Fri 4/12

1 stop6h 38m

$326

Flights are sorted by cheapest first

Deals found on 2/28

When is the best time to book a flight from St. Louis to San Antonio?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to San Antonio. Price data was last updated on January 28, 2024.
Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Search Deals

When is the cheapest time to fly from St. Louis to San Antonio?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to San Antonio. Price data was last updated on February 25, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to San Antonio flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to San Antonio by month

Plan your trip from St. Louis to San Antonio by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to San Antonio is currently $112 while a round-trip flight costs $197. Price data was last updated on February 25, 2024.

Currently, September is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $289). Flying from St. Louis to San Antonio in March is currently the most expensive (average of $387). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$303

February

$318

March

$387

April

$358

May

$338

June

$376

July

$356

August

$296

September

$289

October

$298

November

$314

December

$313

Temperature and rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature and rainfall totals by month.

SAT

Temperature

51.8 - 84.2 °F

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Antonio. Reviews last updated February 29, 2024.
Peruse reviews from past customers who have flown with Frontier, Delta and American Airlines from St. Louis to San Antonio to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very good
9,264 reviews
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very good
11,818 reviews
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.4
Good
11,794 reviews
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.3
Good
15,571 reviews
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

6.5
Okay
8,941 reviews
8.1
Very good
9,264 reviews

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.4

Comfort

7.9

Entertainment

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to San Antonio. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to San Antonio?

Booking a flight from Lambert-St Louis (STL) to San Antonio (SAT) is your only option if you wish to fly from St. Louis to San Antonio. On a typical day, there is 1 flight from Lambert-St Louis to San Antonio, all of which are around 4h 44m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Lambert-St Louis to San Antonio.

Can I find flights from St. Louis to San Antonio for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to San Antonio for under $200. The cheapest flight booked recently is on Frontier for just $137, but on average you can expect to pay $182.

Are there last-minute flights available from St. Louis to San Antonio for under $200?

There are currently 20+ open flights from St. Louis to San Antonio within the next 7 days for less than $200.

What days are nonstop flights available from St. Louis to San Antonio?

Nonstop flights can be found on the following days: Friday, Saturday.

How many flights depart from St. Louis to San Antonio on average per day?

On average 2 flights depart from St. Louis to San Antonio per day.
Morning (6am - Noon) - 50% of flight departures
Afternoon (Noon - 6pm) - 50% of flight departures

How long is the flight from St. Louis to San Antonio?

Departing from St. Louis to San Antonio will take you 5h 35m. The distance from St. Louis to San Antonio is about 790 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from St. Louis to San Antonio round-trip?

Our cheapest airline available from St. Louis to San Antonio is Frontier. Our recent data shows that you can find tickets from as low as $137 on this airline. Additional options worth looking into are Spirit Airlines and Delta, starting at $148 and $178 round-trip. Frontier is currently priced 61% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from St. Louis to San Antonio one-way?

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $76. Users have also found prices from $79 and $99 on Frontier and Delta, respectively.

What are the most popular airlines that fly from St. Louis to San Antonio?

What does STL to SAT mean?

This is defined as Lambert-St Louis Airport (STL) and San Antonio Airport (SAT). Codes like San Antonio Airport are often used to just call airports uniquely.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from St. Louis to San Antonio

Discover the top 5 airlines that operate flights from St. Louis to San Antonio. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated February 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$131Average$235FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$157Average$208FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$176Average$332FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$183Average$391FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$234Average$408FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Search flights from St. Louis to San Antonio by cabin class

Find flights from St. Louis to San Antonio, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from St. Louis to San Antonio

Find hourly flight availability from St. Louis to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 29, 2024.
1%of flight departuresEarly morningMidnight to 6 am
45%of flight departuresMorning6 am to noon
54%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to San Antonio

Explore weekly flight availability from St. Louis to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 29, 2024.
Sunday2daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday2daily flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to San Antonio?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Antonio from St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from St. Louis to San Antonio?

Cheapflights helps you find that perfect flight to San Antonio from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis to San Antonio with no change fees?

Need flexible booking options for your flight to San Antonio from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to San Antonio become cheaper?

Of course! You can now track prices for flights from St. Louis to San Antonio and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees