How popular is this St. Louis to San Antonio flight route?

Within the past month, 1 users have taken a look at flights from Lambert-St Louis to San Antonio.

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 $211 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $239 and $249 round-trip. Frontier is currently priced 36% 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 Frontier. According to our data, you can fly for as low as $106. Users have also found prices from $115 and $119 on Delta and Spirit Airlines, respectively.

What are the cheapest flights from St. Louis to San Antonio?

Looking for the cheapest flight from St. Louis to San Antonio? While on average our users pay $283, our data indicates the cheapest price to be $88. The most popular route (Lambert-St Louis - San Antonio), is priced around $229.

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

Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from 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 Monday can be a cost-effective option. It’s possible to save up to 46% 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 57 days in advance to save up to 173% 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 57 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 $432, or $432 for flights within the next 24 hours.

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

August can be a great time to fly to San Antonio from St. Louis with a flight ticket averaging about $334. Cheapflights users have found deals in the month of August for as cheap as $163. The most expensive prices can be found in the month of October.

Most accurate provider : When it comes to deals on St. Louis-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Antonio flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-San Antonio flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 2h 05m 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 deals for flights from St. Louis to San Antonio that include hotel bookings?

Yes. In addition to deals on St. Louis to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to San Antonio?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Antonio.

Can I find deals for business class flights from St. Louis to San Antonio?

Yes. Cheapflights offers flight deals from St. Louis to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$106+ Flights from St. Louis to San Antonio

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to San Antonio are usually found in August or January, booked 56 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from St. Louis to San Antonio

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$211 (CheapOair)
One-way from	$106 (Mytrip)
Popular in	October
Cheapest in	August
Average price	$333
Good round-trip deal	$323 or less
Good one-way deal	$108 or less

Provider with most accurate pricing for Lambert-St Louis-San Antonio flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-San Antonio flights.

Search Deals

From Lambert-St Louis to San Antonio

Search Deals

One-way flight from Lambert-St Louis to San Antonio

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to San Antonio.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to San Antonio.

Search Deals

Find flight deals from St. Louis to San Antonio

Cheapest flights from St. Louis to San Antonio
Explore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Sat 5/175:45 pmSTL - SAT

1 stop16h 07mFrontier

Mon 5/198:31 pmSAT - STL

1 stop27h 13mFrontier

Deal found 4/27

$201

Tue 6/1011:29 amSTL - SAT

1 stop5h 39mDelta

Wed 6/188:10 amSAT - STL

1 stop6h 27mDelta

Deal found 4/27

$229

Tue 5/2011:00 amSTL - SAT

1 stop4h 46mUnited Airlines

Fri 5/235:59 pmSAT - STL

1 stop4h 18mUnited Airlines

Deal found 4/27

$239

Thu 5/2210:10 amSTL - SAT

1 stop12h 41mMultiple Airlines

Sun 5/252:18 pmSAT - STL

1 stop23h 22mMultiple Airlines

Deal found 4/28

$278

Tue 6/106:40 pmSTL - SAT

Nonstop2h 05mSouthwest

Wed 6/184:45 pmSAT - STL

Nonstop2h 10mSouthwest

Deal found 4/27

$287

Thu 6/196:12 pmSTL - SAT

1 stop27h 15mSpirit Airlines

Sun 6/226:13 pmSAT - STL

2 stops24h 05mSpirit Airlines

Deal found 4/27

$370

Fri 5/163:03 pmSTL - SAT

2 stops26h 49mAlaska Airlines

Mon 5/192:29 pmSAT - STL

2 stops26h 53mAlaska Airlines

Deal found 4/28

$928

Best flights from St. Louis to San Antonio
Discover carefully curated flight deals from St. Louis to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Sat 5/108:15 pmSTL - SAT

1 stop23h 20mFrontier

Mon 5/128:31 pmSAT - STL

1 stop27h 35mFrontier

Deal found 4/27

$211

Tue 5/2011:00 amSTL - SAT

1 stop4h 46mUnited Airlines

Fri 5/235:59 pmSAT - STL

1 stop4h 18mUnited Airlines

Deal found 4/27

$239

Fri 5/305:40 pmSTL - SAT

1 stop6h 48mDelta

Mon 6/26:19 pmSAT - STL

1 stop5h 19mDelta

Deal found 4/27

$249

Thu 5/2210:10 amSTL - SAT

1 stop12h 41mMultiple Airlines

Sun 5/252:18 pmSAT - STL

1 stop23h 22mMultiple Airlines

Deal found 4/28

$278

Thu 6/510:10 amSTL - SAT

1 stop12h 41mSpirit Airlines

Fri 6/610:51 pmSAT - STL

2 stops34h 24mSpirit Airlines

Deal found 4/28

$317

Tue 6/35:05 pmSTL - SAT

Nonstop2h 15mSouthwest

Fri 6/64:30 pmSAT - STL

Nonstop2h 10mSouthwest

Deal found 4/27

$332

Fri 6/66:18 pmSTL - SAT

2 stops22h 25mAlaska Airlines

Sun 6/87:28 pmSAT - STL

2 stops21h 11mAlaska Airlines

Deal found 4/28

$844

Last-minute flights from St. Louis to San Antonio
Discover last-minute flight deals from St. Louis to San Antonio. Data last updated April 29, 2025 and is based on user searches.

Mon 4/286:00 pmSTL - SAT

1 stop5h 58mAmerican Airlines

Sat 5/35:00 amSAT - STL

1 stop4h 01mAmerican Airlines

Deal found 4/28

$782

Tue 4/296:10 pmSTL - SAT

1 stop15h 04mSpirit Airlines

Sat 5/35:11 pmSAT - STL

1 stop24h 04mSpirit Airlines

Deal found 4/28

$690

Sun 5/46:00 amSTL - SAT

1 stop5h 45mDelta

Wed 5/78:00 amSAT - STL

1 stop6h 35mDelta

Deal found 4/28

$749

Mon 5/55:15 pmSTL - SAT

3 stops22h 53mMultiple Airlines

Tue 5/68:56 pmSAT - STL

3 stops36h 19mMultiple Airlines

Deal found 4/28

$587

Mon 5/58:48 amSTL - SAT

1 stop14h 58mUnited Airlines

Tue 5/69:00 amSAT - STL

1 stop7h 33mUnited Airlines

Deal found 4/28

$718

Mon 5/510:50 amSTL - SAT

Nonstop2h 15mSouthwest

Tue 5/69:40 amSAT - STL

1 stop3h 35mSouthwest

Deal found 4/28

$765

Thu 5/85:45 pmSTL - SAT

1 stop25h 46mFrontier

Sun 5/1110:52 amSAT - STL

1 stop13h 14mFrontier

Deal found 4/28

$248

Thu 5/85:00 amSTL - SAT

2 stops13h 37mAlaska Airlines

Sun 5/116:35 amSAT - STL

2 stops15h 40mAlaska Airlines

Deal found 4/28

$1,253

Sat 5/108:15 pmSTL - SAT

1 stop23h 20mFrontier

Mon 5/128:31 pmSAT - STL

1 stop27h 35mFrontier

Deal found 4/27

$211

Fri 5/163:03 pmSTL - SAT

2 stops26h 00mAlaska Airlines

Mon 5/192:29 pmSAT - STL

2 stops23h 38mAlaska Airlines

Deal found 4/28

$928

Tue 5/2011:00 amSTL - SAT

1 stop4h 46mUnited Airlines

Fri 5/235:59 pmSAT - STL

1 stop4h 18mUnited Airlines

Deal found 4/27

$239

Thu 5/2210:10 amSTL - SAT

1 stop12h 41mMultiple Airlines

Sun 5/252:18 pmSAT - STL

1 stop23h 22mMultiple Airlines

Deal found 4/28

$278

One-way flights from St. Louis to San Antonio
Search for one-way flight options from St. Louis to San Antonio. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Wed 5/287:55 pmSTL - SAT

1 stop22h 56mFrontier

Deal found 4/27

$106

Tue 5/275:40 pmSTL - SAT

1 stop6h 41mDelta

Deal found 4/28

$115

Thu 6/510:10 amSTL - SAT

1 stop12h 41mSpirit Airlines

Deal found 4/27

$119

Tue 6/35:00 amSTL - SAT

2 stops8h 04mUnited Airlines

Deal found 4/27

$120

Wed 5/285:05 pmSTL - SAT

Nonstop2h 15mSouthwest

Deal found 4/28

$144

Mon 6/97:00 amSTL - SAT

2 stops22h 04mMultiple Airlines

Deal found 4/27

$177

Fri 6/277:20 amSTL - SAT

2 stops11h 19mAmerican Airlines

Deal found 4/27

$338

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Sat 5/17

5:45 pm-9:52 am

1 stop16h 07m

San Antonio

Mon 5/19

8:31 pm-11:44 pm

1 stop27h 13m

$201

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 6/10

11:29 am-5:08 pm

1 stop5h 39m

San Antonio

Wed 6/18

8:10 am-2:37 pm

1 stop6h 27m

$229

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 5/20

11:00 am-3:46 pm

1 stop4h 46m

San Antonio

Fri 5/23

5:59 pm-10:17 pm

1 stop4h 18m

$239

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 5/22

10:10 am-10:51 pm

1 stop12h 41m

San Antonio

Sun 5/25

2:18 pm-1:40 pm

1 stop23h 22m

$278

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 6/10

6:40 pm-8:45 pm

Nonstop2h 05m

San Antonio

Wed 6/18

4:45 pm-6:55 pm

Nonstop2h 10m

$287

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 6/19

6:12 pm-9:27 pm

1 stop27h 15m

San Antonio

Sun 6/22

6:13 pm-6:18 pm

2 stops24h 05m

$370

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 5/16

3:03 pm-5:52 pm

2 stops26h 49m

San Antonio

Mon 5/19

2:29 pm-5:22 pm

2 stops26h 53m

$928

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 5/28

7:55 pm-6:51 pm

1 stop22h 56m

$106

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 5/27

5:40 pm-12:21 am

1 stop6h 41m

$115

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 6/5

10:10 am-10:51 pm

1 stop12h 41m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 14 results

Compare providers for flights from St. Louis to San Antonio

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San Antonio in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy2 stars	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Antonio flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-San Antonio flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Antonio

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

Booking 56 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.

What is the cheapest month to book a flight from St. Louis to San Antonio?

Currently, August is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $295). Flying from St. Louis to San Antonio in March is currently the most expensive (average of $376). 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.

What is the cheapest time of day to fly from STL to 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 at noon, which can drop the price by up to 13% versus a flight in the evening.

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

Travelers seeking maximum savings on their St. Louis to San Antonio flight should consider departing on Saturday evenings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from St. Louis to San Antonio

The most flights from STL to SAT are scheduled on a Monday (2 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in San Antonio by month

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta 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.

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

9,961 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,292 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,929 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,696 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,961 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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 2h 05m 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.
How popular is this St. Louis to San Antonio flight route?
Within the past month, 1 users have taken a look at flights from Lambert-St Louis to San Antonio.
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 $211 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $239 and $249 round-trip. Frontier is currently priced 36% 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 Frontier. According to our data, you can fly for as low as $106. Users have also found prices from $115 and $119 on Delta and Spirit Airlines, respectively.
What are the cheapest flights from St. Louis to San Antonio?
Looking for the cheapest flight from St. Louis to San Antonio? While on average our users pay $283, our data indicates the cheapest price to be $88. The most popular route (Lambert-St Louis - San Antonio), is priced around $229.
Can I find deals for flights from St. Louis to San Antonio that include hotel bookings?
Yes. In addition to deals on St. Louis to San Antonio flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to San Antonio?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to San Antonio.
Can I find deals for business class flights from St. Louis to San Antonio?
Yes. Cheapflights offers flight deals from St. Louis to San Antonio by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to San Antonio?
Currently, August is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $295). Flying from St. Louis to San Antonio in March is currently the most expensive (average of $376). 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.

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Other flights to San Antonio

Top 5 airlines flying from St. Louis to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$128	Average$206	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$167	Average$288	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$197	Average$402	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$206	Average$330	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$218	Average$311	FlexibilityNo cancel fee	On-time69%

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$106+ Cheap flights from St. Louis to San Antonio (STL - SAT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to San Antonio with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to San Antonio are usually found in August or January, booked 56 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from St. Louis to San Antonio

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from St. Louis to San Antonio

Cheapest flights from St. Louis to San AntonioExplore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Explore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to San Antonio that are best for you.

Compare providers for flights from St. Louis to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to San Antonio in April.

Best time to book a flight from St. Louis to San Antonio

Have a flexible travel schedule? Discover the best time to fly to San Antonio from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to San Antonio

How far ahead should I 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 April 25, 2025.

What is the cheapest month to book a flight from St. Louis to San Antonio?

What is the cheapest time of day to fly from STL to SAT?

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 April 29, 2025.

What is the cheapest day 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 March 30, 2025.

Weekly flight availability from St. Louis to San Antonio

Rainfall in San Antonio by month

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

Temperature in San Antonio by month

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

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta 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.

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.

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What are the cheapest flights from St. Louis to San Antonio?

Can I find deals for flights from St. Louis to San Antonio that include hotel bookings?

How can I find direct flights from St. Louis to San Antonio?

Can I find deals for business class flights from St. Louis to San Antonio?

What is the cheapest month to book a flight from St. Louis to San Antonio?

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Alternative routes for St. Louis to San Antonio

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Top 5 airlines flying from St. Louis to San Antonio

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Cheapest flights from St. Louis to San Antonio
Explore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.