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

This flight path from San Antonio to Lambert-St Louis was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

Delta, at $229, was found to be the cheapest airline from San Antonio to St. Louis.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Delta is 33% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $96. Delta flights start at $115 while deals on United Airlines start at $120 one-way.

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

On average you can expect to pay $328 for a flight from San Antonio to St. Louis. The cheapest flight overall is $149 while the most popular route, (San Antonio - Lambert-St Louis) is currently priced at $224.

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

American Airlines, Delta and Frontier are the most popular airlines when flying from San Antonio to St. Louis.

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

Flights from San Antonio to St. Louis are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

To save on the cost of your flight from San Antonio to St. Louis, book at least 53 days before your planned departure. Booking around this time can save you about 147% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $216 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $478.

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

Flights from San Antonio to St. Louis lean towards being more expensive in November. Prices are generally better when you fly from San Antonio to St. Louis in February, with the cheapest ticket starting at $216.

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

Most trusted provider : When it comes to deals on San Antonio-St. Louis flights, Cheapflights users trust Mytrip the most. Mytrip 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 San Antonio-St. Louis 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 San Antonio to St. Louis?

You will need to book a flight from San Antonio to Lambert-St Louis if you want to fly from San Antonio to St. Louis. At least 5 different airlines have flights from San Antonio (SAT) to Lambert-St Louis (STL) on a regular basis. There are 2 flights to St. Louis from the San Antonio airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SAT to STL to be around 2h 05m.

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

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

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

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

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

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

$96+ Flights from San Antonio to St. Louis

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

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 San Antonio to Lambert-St Louis are usually found in February or September, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from San Antonio to St. Louis

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$229 (Delta)
One-way from	$96 (Mytrip)
Popular in	November
Cheapest in	February
Average price	$307
Good round-trip deal	$335 or less
Good one-way deal	$179 or less

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

Search Deals

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

Search Deals

From San Antonio to Lambert-St Louis

Search Deals

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

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($42 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 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 San Antonio to Lambert-St Louis.

Search Deals

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

Search Deals

Find flight deals from San Antonio to St. Louis

Cheapest flights from San Antonio to St. Louis
Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Fri 4/253:02 pmSAT - STL

1 stop18h 59mFrontier

Sun 4/275:41 pmSTL - SAT

1 stop25h 18mFrontier

Deal found 4/22

$200

Tue 7/156:30 amSAT - STL

1 stop5h 02mDelta

Sat 7/196:30 amSTL - SAT

1 stop5h 26mDelta

Deal found 4/22

$229

Fri 5/236:34 pmSAT - STL

1 stop5h 17mAmerican Airlines

Mon 5/265:19 amSTL - SAT

1 stop4h 42mAmerican Airlines

Deal found 4/22

$249

Sun 6/85:30 amSAT - STL

1 stop5h 09mUnited Airlines

Sun 6/155:55 pmSTL - SAT

1 stop5h 04mUnited Airlines

Deal found 4/22

$319

Wed 5/282:25 pmSAT - STL

Nonstop2h 10mSouthwest

Mon 6/26:10 pmSTL - SAT

Nonstop2h 15mSouthwest

Deal found 4/22

$323

Fri 6/66:35 pmSAT - STL

1 stop16h 50mMultiple Airlines

Sun 6/156:12 pmSTL - SAT

3 stops34h 48mMultiple Airlines

Deal found 4/22

$360

Thu 6/1912:32 pmSAT - STL

2 stops28h 32mSpirit Airlines

Sun 6/226:12 pmSTL - SAT

1 stop27h 15mSpirit Airlines

Deal found 4/21

$377

Best flights from San Antonio to St. Louis
Discover carefully curated flight deals from San Antonio to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Tue 6/36:06 pmSAT - STL

1 stop5h 20mDelta

Sat 6/79:55 amSTL - SAT

1 stop5h 52mDelta

Deal found 4/22

$229

Fri 5/236:34 pmSAT - STL

1 stop5h 17mAmerican Airlines

Mon 5/265:12 amSTL - SAT

1 stop5h 40mAmerican Airlines

Deal found 4/22

$249

Tue 6/31:20 pmSAT - STL

1 stop7h 28mUnited Airlines

Sat 6/78:05 amSTL - SAT

2 stops11h 32mUnited Airlines

Deal found 4/22

$304

Tue 6/32:25 pmSAT - STL

Nonstop2h 10mSouthwest

Sat 6/75:30 amSTL - SAT

1 stop5h 55mSouthwest

Deal found 4/22

$316

Fri 6/66:35 pmSAT - STL

1 stop16h 50mMultiple Airlines

Sun 6/156:12 pmSTL - SAT

2 stops34h 48mMultiple Airlines

Deal found 4/22

$360

Thu 6/1912:32 pmSAT - STL

2 stops28h 32mSpirit Airlines

Sun 6/226:12 pmSTL - SAT

1 stop27h 15mSpirit Airlines

Deal found 4/21

$377

Last-minute flights from San Antonio to St. Louis
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated April 22, 2025 and is based on user searches.

Fri 4/253:02 pmSAT - STL

1 stop18h 59mFrontier

Sun 4/275:41 pmSTL - SAT

1 stop25h 18mFrontier

Deal found 4/22

$200

Thu 5/16:25 pmSAT - STL

1 stop14h 44mFrontier

Sun 5/45:45 pmSTL - SAT

1 stop25h 46mFrontier

Deal found 4/22

$202

Thu 5/15:30 amSAT - STL

2 stops10h 17mUnited Airlines

Sun 5/46:00 amSTL - SAT

1 stop7h 18mUnited Airlines

Deal found 4/22

$754

Fri 5/21:43 pmSAT - STL

1 stop7h 22mMultiple Airlines

Mon 5/56:30 amSTL - SAT

1 stop12h 07mMultiple Airlines

Deal found 4/22

$650

Fri 5/23:45 pmSAT - STL

1 stop3h 30mSouthwest

Mon 5/510:50 amSTL - SAT

Nonstop2h 15mSouthwest

Deal found 4/22

$765

Fri 5/236:34 pmSAT - STL

1 stop5h 17mAmerican Airlines

Mon 5/265:19 amSTL - SAT

1 stop4h 42mAmerican Airlines

Deal found 4/22

$249

Fri 5/234:19 pmSAT - STL

1 stop5h 58mUnited Airlines

Mon 5/266:30 amSTL - SAT

2 stops8h 53mUnited Airlines

Deal found 4/22

$474

Wed 5/288:00 amSAT - STL

1 stop6h 35mDelta

Mon 6/23:40 pmSTL - SAT

1 stop6h 38mDelta

Deal found 4/22

$239

Wed 5/282:25 pmSAT - STL

Nonstop2h 10mSouthwest

Mon 6/26:10 pmSTL - SAT

Nonstop2h 15mSouthwest

Deal found 4/22

$323

Wed 5/281:27 pmSAT - STL

2 stops19h 48mMultiple Airlines

Mon 6/21:00 pmSTL - SAT

3 stops23h 57mMultiple Airlines

Deal found 4/22

$418

One-way flights from San Antonio to St. Louis
Search for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Sat 5/242:18 pmSAT - STL

1 stop23h 22mFrontier

Deal found 4/22

$96

Wed 6/116:03 pmSAT - STL

1 stop5h 19mDelta

Deal found 4/22

$115

Sat 6/75:35 amSAT - STL

2 stops9h 55mUnited Airlines

Deal found 4/22

$120

Sat 6/1412:32 pmSAT - STL

2 stops28h 32mSpirit Airlines

Deal found 4/22

$122

Tue 7/15:00 amSAT - STL

Nonstop2h 10mSouthwest

Deal found 4/22

$144

Sun 5/256:03 pmSAT - STL

2 stops24h 38mMultiple Airlines

Deal found 4/22

$147

Tue 5/2011:46 amSAT - STL

2 stops10h 06mAmerican Airlines

Deal found 4/22

$155

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Tue 6/3

6:06 pm-11:26 pm

1 stop5h 20m

Lambert-St Louis

Sat 6/7

9:55 am-3:47 pm

1 stop5h 52m

$229

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Fri 5/23

6:34 pm-11:51 pm

1 stop5h 17m

Lambert-St Louis

Mon 5/26

5:12 am-10:52 am

1 stop5h 40m

$249

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Tue 6/3

1:20 pm-8:48 pm

1 stop7h 28m

Lambert-St Louis

Sat 6/7

8:05 am-7:37 pm

2 stops11h 32m

$304

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Tue 6/3

2:25 pm-4:35 pm

Nonstop2h 10m

Lambert-St Louis

Sat 6/7

5:30 am-11:25 am

1 stop5h 55m

$316

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Fri 6/6

6:35 pm-11:25 am

1 stop16h 50m

Lambert-St Louis

Sun 6/15

6:12 pm-5:00 am

3 stops34h 48m

$360

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Thu 6/19

12:32 pm-5:04 pm

2 stops28h 32m

Lambert-St Louis

Sun 6/22

6:12 pm-9:27 pm

1 stop27h 15m

$377

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Sat 5/24

2:18 pm-1:40 pm

1 stop23h 22m

$96

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Tue 5/20

10:32 am-4:35 pm

1 stop6h 03m

$115

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Sat 6/7

5:35 am-3:30 pm

2 stops9h 55m

$120

San AntonioSt. Louis

SAT - STL

SATSTL

San Antonio

Sat 6/14

12:32 pm-5:04 pm

2 stops28h 32m

$122

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 13 results

Compare providers for flights from San Antonio to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Antonio to St. Louis 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 Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
CheapOair	Price Accuracy1 star	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 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 San Antonio-St. Louis flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on San Antonio-St. Louis flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from San Antonio-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Antonio-St. Louis flights, Cheapflights users trust Mytrip the most. Mytrip 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 San Antonio-St. Louis 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 San Antonio to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Antonio 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 San Antonio to St. Louis

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

To ensure you get the cheapest price possible for a flight from San Antonio to St. Louis, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $311). Flying from San Antonio to St. Louis in March is currently the most expensive (average of $356). 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 SAT to STL?

When flying from San Antonio to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 64% versus a flight at noon.

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

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

Rainfall in St. Louis by month

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from San Antonio to St. Louis 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.

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,286 reviews

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,920 reviews

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,683 reviews

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Spirit Airlines

6.3

Okay

7,940 reviews

Southwest

8.0

Very good

4,286 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airports do I use to fly from San Antonio to St. Louis?
You will need to book a flight from San Antonio to Lambert-St Louis if you want to fly from San Antonio to St. Louis. At least 5 different airlines have flights from San Antonio (SAT) to Lambert-St Louis (STL) on a regular basis. There are 2 flights to St. Louis from the San Antonio airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SAT to STL to be around 2h 05m.
How popular is this San Antonio to St. Louis flight route?
This flight path from San Antonio to Lambert-St Louis was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from San Antonio to St. Louis round-trip?
Delta, at $229, was found to be the cheapest airline from San Antonio to St. Louis.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that Delta is 33% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from San Antonio to St. Louis one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $96. Delta flights start at $115 while deals on United Airlines start at $120 one-way.
What are the cheapest flights from San Antonio to St. Louis?
On average you can expect to pay $328 for a flight from San Antonio to St. Louis. The cheapest flight overall is $149 while the most popular route, (San Antonio - Lambert-St Louis) is currently priced at $224.
Can I find deals for flights from San Antonio to St. Louis that include hotel bookings?
Yes. In addition to deals on San Antonio to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Antonio to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Antonio to St. Louis.
Can I find deals for business class flights from San Antonio to St. Louis?
Yes. Cheapflights offers flight deals from San Antonio to St. Louis 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 San Antonio to St. Louis?
Currently, August is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $311). Flying from San Antonio to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

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Complete your trip

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Other flights to St. Louis

Top 5 airlines flying from San Antonio to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$127	Average$185	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$134	Average$258	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$214	Average$354	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$227	Average$395	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$248	Average$339	FlexibilityNo cancel fee	On-time69%

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$96+ Cheap flights from San Antonio to St. Louis (SAT - STL)

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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Antonio to St. Louis 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 San Antonio to Lambert-St Louis are usually found in February or September, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from San Antonio to St. Louis

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 San Antonio to St. Louis

Cheapest flights from San Antonio to St. LouisExplore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from San Antonio to St. Louis

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 San Antonio to St. Louis in April.

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

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Antonio to St. Louis. Price data was last updated on April 18, 2025.

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

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

Find hourly flight availability from San Antonio to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 22, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Antonio to St. Louis. Price data was last updated on March 30, 2025.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from San Antonio to St. Louis 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 San Antonio to St. Louis. 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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Alternative routes for San Antonio to St. Louis

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Top 5 airlines flying from San Antonio to St. Louis

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Cheapest flights from San Antonio to St. Louis
Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.