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 Spirit Airlines. Our recent data shows that you can find tickets from as low as $136 on this airline. An additional option worth looking into is Frontier, starting at $138. Spirit Airlines is currently priced 64% 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 $88. Users have also found prices from $101 and $294 on Frontier and American Airlines, respectively.

How recently were the St. Louis to San Antonio flight deals updated?

The St. Louis to San Antonio flight deals you see on this page were last updated on 6/2.

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

Currently, September is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $292). 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 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.

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 Spirit Airlines for just $136, but on average you can expect to pay $188.

Are there last-minute flights available from St. Louis to San Antonio for under $300?

There are currently 13+ open flights from St. Louis to San Antonio within the next 7 days for less than $300.

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 5h 50m 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.

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.

Can I find deals for flights from St. Louis to San Antonio that include extra baggage allowance?

The amount of baggage you can bring on your St. Louis to San Antonio flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Can I find deals on flights from St. Louis to San Antonio with specific airlines?

Yes, Cheapflights allows you to browse and filter St. Louis to San Antonio flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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.

Can I find deals for flights from St. Louis to San Antonio that allow pets onboard?

Many airlines flying from St. Louis to San Antonio offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Can I find deals on last-minute flights from St. Louis to San Antonio?

Yes, you can often find last-minute deals on St. Louis to San Antonio flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

Flights from St. Louis, MO to San Antonio, TX from $88

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

The best prices from Lambert-St Louis to San Antonio are usually found in August or May, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to San Antonio

Popular in	December
Cheapest in	August
Round-trip from	$292
One-way from	$118

High demand for flights, 26% potential price rise

Search Deals

Best time to find cheap flights, 14% potential price drop

Search Deals

From Lambert-St Louis to San Antonio

Search Deals

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

Search Deals

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 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 59 days in advance to save up to 221% 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 59 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 $481, or $566 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 $382. Cheapflights users have found deals in the month of August for as cheap as $198. The most expensive prices can be found in the month of December.

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 in the evening, which can drop the price by up to 28% versus a flight in the afternoon.

Cheap Spirit Airlines flights from St. Louis to San Antonio

Check out some of the cheapest Spirit Airlines 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.

Wed 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/42:41 pmSAT - STL

1 stop7h 33mSpirit Airlines

Deal found 6/2$136

Wed 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/43:15 pmSAT - STL

3 stops27h 14mSpirit Airlines

Deal found 6/2$163

Tue 7/93:23 pmSTL - SAT

1 stop25h 42mSpirit Airlines

Tue 7/169:40 pmSAT - STL

1 stop17h 26mSpirit Airlines

Deal found 6/1$165

Wed 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/45:39 pmSAT - STL

2 stops23h 49mSpirit Airlines

Deal found 6/2$175

Tue 7/23:23 pmSTL - SAT

1 stop9h 36mSpirit Airlines

Tue 7/95:21 amSAT - STL

1 stop9h 02mSpirit Airlines

Deal found 6/2$177

Tue 7/2310:11 amSTL - SAT

1 stop14h 48mSpirit Airlines

Thu 7/255:25 amSAT - STL

1 stop12h 04mSpirit Airlines

Deal found 6/1$186

Tue 7/23:23 pmSTL - SAT

1 stop9h 36mSpirit Airlines

Sat 7/65:21 amSAT - STL

1 stop12h 07mSpirit Airlines

Deal found 5/31$202

Tue 7/211:57 amSTL - SAT

2 stops13h 02mSpirit Airlines

Fri 7/56:45 amSAT - STL

1 stop7h 31mSpirit Airlines

Deal found 5/31$236

Sun 6/96:55 pmSTL - SAT

1 stop24h 43mSpirit Airlines

Mon 6/178:28 pmSAT - STL

1 stop14h 29mSpirit Airlines

Deal found 6/1$243

Cheap United Airlines flights from St. Louis to San Antonio

To aid your search, here are some of the cheapest United Airlines flights we've found from St. Louis to San Antonio. Ensure the flight price, dates, time, and airline match your criteria before you book.

Wed 10/236:15 amSTL - SAT

1 stop4h 45mUnited Airlines

Tue 11/512:11 pmSAT - STL

2 stops8h 50mUnited Airlines

Deal found 6/1$339

Wed 10/236:15 amSTL - SAT

1 stop6h 59mUnited Airlines

Fri 11/19:36 amSAT - STL

1 stop7h 00mUnited Airlines

Deal found 6/1$349

Thu 7/48:05 amSTL - SAT

2 stops7h 18mUnited Airlines

Wed 7/1012:05 pmSAT - STL

1 stop4h 23mUnited Airlines

Deal found 6/2$353

Tue 7/211:25 amSTL - SAT

2 stops7h 36mUnited Airlines

Tue 7/99:40 amSAT - STL

1 stop6h 48mUnited Airlines

Deal found 6/2$355

Sat 10/265:34 pmSTL - SAT

1 stop5h 26mUnited Airlines

Fri 11/112:11 pmSAT - STL

1 stop4h 25mUnited Airlines

Deal found 6/1$360

Thu 10/246:15 amSTL - SAT

1 stop6h 59mUnited Airlines

Fri 11/11:18 pmSAT - STL

1 stop7h 43mUnited Airlines

Deal found 6/1$364

Sat 7/275:03 pmSTL - SAT

1 stop3h 50mUnited Airlines

Sat 8/35:30 amSAT - STL

2 stops9h 06mUnited Airlines

Deal found 6/2$367

Thu 10/246:15 amSTL - SAT

1 stop6h 59mUnited Airlines

Fri 11/112:11 pmSAT - STL

2 stops8h 50mUnited Airlines

Deal found 6/1$369

Sun 10/276:15 amSTL - SAT

1 stop6h 53mUnited Airlines

Fri 11/112:11 pmSAT - STL

1 stop4h 25mUnited Airlines

Deal found 6/1$397

Cheap St. Louis to San Antonio flights in June & July 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.

Mon 6/172:41 pmSTL - SAT

1 stop11h 14mMultiple Airlines

Sat 6/223:02 pmSAT - STL

1 stop23h 35mMultiple Airlines

Deal found 6/1$189

Tue 6/187:44 pmSTL - SAT

1 stop23h 50mFrontier

Sat 6/2210:31 amSAT - STL

1 stop28h 06mFrontier

Deal found 6/2$210

Sun 6/303:37 pmSTL - SAT

1 stop16h 45mFrontier

Fri 7/54:09 pmSAT - STL

1 stop24h 29mFrontier

Deal found 5/31$221

Fri 6/75:36 pmSTL - SAT

1 stop20h 26mFrontier

Sun 6/910:58 pmSAT - STL

1 stop10h 31mFrontier

Deal found 6/1$238

Sat 6/298:02 pmSTL - SAT

1 stop25h 55mFrontier

Fri 7/54:09 pmSAT - STL

1 stop24h 29mFrontier

Deal found 5/31$242

Sun 6/96:55 pmSTL - SAT

1 stop24h 43mSpirit Airlines

Mon 6/178:28 pmSAT - STL

1 stop14h 29mSpirit Airlines

Deal found 6/1$243

Sun 6/305:22 pmSTL - SAT

1 stop28h 26mSpirit Airlines

Sat 7/65:21 amSAT - STL

1 stop12h 07mSpirit Airlines

Deal found 5/31$250

Sun 6/97:44 pmSTL - SAT

1 stop22h 31mFrontier

Mon 6/174:19 pmSAT - STL

1 stop18h 23mFrontier

Deal found 6/2$264

Mon 6/102:41 pmSTL - SAT

1 stop11h 14mSpirit Airlines

Sun 6/165:21 amSAT - STL

1 stop11h 11mSpirit Airlines

Deal found 6/1$276

St. Louis to San Antonio 2024 flight deals

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 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/42:41 pmSAT - STL

1 stop7h 33mSpirit Airlines

Deal found 6/2$136

Mon 8/267:29 pmSTL - SAT

1 stop22h 15mFrontier

Mon 9/26:40 pmSAT - STL

1 stop15h 38mFrontier

Deal found 6/2$138

Wed 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/43:15 pmSAT - STL

3 stops27h 14mSpirit Airlines

Deal found 6/2$163

Tue 7/93:23 pmSTL - SAT

1 stop25h 42mSpirit Airlines

Tue 7/169:40 pmSAT - STL

1 stop17h 26mSpirit Airlines

Deal found 6/1$165

Fri 8/167:29 pmSTL - SAT

1 stop22h 15mFrontier

Mon 8/199:19 amSAT - STL

1 stop26h 31mFrontier

Deal found 5/31$171

Wed 8/287:57 amSTL - SAT

1 stop15h 25mSpirit Airlines

Wed 9/45:39 pmSAT - STL

2 stops23h 49mSpirit Airlines

Deal found 6/2$175

Tue 7/23:23 pmSTL - SAT

1 stop9h 36mSpirit Airlines

Tue 7/95:21 amSAT - STL

1 stop9h 02mSpirit Airlines

Deal found 6/2$177

Tue 7/23:23 pmSTL - SAT

1 stop9h 36mMultiple Airlines

Fri 7/54:09 pmSAT - STL

1 stop24h 29mMultiple Airlines

Deal found 5/31$178

Tue 7/2310:11 amSTL - SAT

1 stop14h 48mSpirit Airlines

Thu 7/255:25 amSAT - STL

1 stop12h 04mSpirit Airlines

Deal found 6/1$186

St. Louis to San Antonio flights leaving soon

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.

Fri 6/75:36 pmSTL - SAT

1 stop20h 26mFrontier

Sun 6/910:58 pmSAT - STL

1 stop10h 31mFrontier

Deal found 6/1$238

Sun 6/96:55 pmSTL - SAT

1 stop24h 43mSpirit Airlines

Mon 6/178:28 pmSAT - STL

1 stop14h 29mSpirit Airlines

Deal found 6/1$243

Sun 6/97:44 pmSTL - SAT

1 stop22h 31mFrontier

Mon 6/174:19 pmSAT - STL

1 stop18h 23mFrontier

Deal found 6/2$264

Mon 6/102:41 pmSTL - SAT

1 stop11h 14mSpirit Airlines

Sun 6/165:21 amSAT - STL

1 stop11h 11mSpirit Airlines

Deal found 6/1$276

Wed 6/121:55 pmSTL - SAT

2 stops25h 43mSpirit Airlines

Fri 6/148:28 pmSAT - STL

1 stop14h 06mSpirit Airlines

Deal found 5/31$370

Mon 6/102:00 pmSTL - SAT

3 stops34h 59mMultiple Airlines

Sun 6/165:21 amSAT - STL

1 stop11h 11mMultiple Airlines

Deal found 6/1$406

Wed 6/121:55 pmSTL - SAT

2 stops25h 43mSpirit Airlines

Fri 6/145:21 amSAT - STL

2 stops29h 13mSpirit Airlines

Deal found 5/31$410

Wed 6/121:55 pmSTL - SAT

2 stops25h 43mSpirit Airlines

Fri 6/146:45 amSAT - STL

3 stops27h 49mSpirit Airlines

Deal found 5/31$437

Mon 6/102:41 pmSTL - SAT

1 stop11h 14mSpirit Airlines

Sun 6/164:28 pmSAT - STL

2 stops21h 23mSpirit Airlines

Deal found 6/1$480

One-way flights to San Antonio from St. Louis

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.

Tue 6/113:23 pmSTL - SAT

2 stops28h 16mSpirit Airlines

Deal found 6/1$88

Wed 6/58:02 pmSTL - SAT

1 stop23h 06mFrontier

Deal found 6/1$101

Tue 6/113:23 pmSTL - SAT

1 stop9h 36mSpirit Airlines

Deal found 6/1$107

Tue 6/113:23 pmSTL - SAT

3 stops28h 16mSpirit Airlines

Deal found 6/1$109

Sat 6/228:02 pmSTL - SAT

1 stop25h 55mFrontier

Deal found 6/1$110

Thu 6/203:32 pmSTL - SAT

1 stop16h 50mFrontier

Deal found 6/1$115

Fri 6/215:36 pmSTL - SAT

1 stop16h 05mFrontier

Deal found 6/1$118

Fri 6/217:30 pmSTL - SAT

2 stops21h 20mMultiple Airlines

Deal found 6/1$164

Sat 6/226:22 pmSTL - SAT

2 stops23h 47mSpirit Airlines

Deal found 6/1$180

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

Fly from

Fly to

Budget

$136 - $339

Route

Depart

Return

Price

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 8/28

1 stop15h 25m

San Antonio

Wed 9/4

1 stop7h 33m

$136

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 8/26

1 stop22h 15m

San Antonio

Mon 9/2

1 stop15h 38m

$138

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 8/28

1 stop15h 25m

San Antonio

Wed 9/4

3 stops27h 14m

$163

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 7/9

1 stop25h 42m

San Antonio

Tue 7/16

1 stop17h 26m

$165

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 8/16

1 stop22h 15m

San Antonio

Mon 8/19

1 stop26h 31m

$171

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 7/2

1 stop9h 36m

San Antonio

Fri 7/5

1 stop24h 29m

$178

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 10/23

1 stop8h 32m

San Antonio

Wed 10/30

1 stop5h 54m

$264

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 10/4

1 stop4h 28m

San Antonio

Sun 10/6

1 stop4h 40m

$327

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 10/23

1 stop4h 45m

San Antonio

Tue 11/5

2 stops8h 50m

$339

Flights are sorted by cheapest first

Deals found on 6/2

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

Booking 58 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

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

Morning

Noon

Afternoon

Evening

All times are departure.

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

Search Deals

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

Temperature and rainfall in San Antonio by month

SAT Temperature	51.8 - 84.2 °F

SAT

Temperature

51.8 - 84.2 °F

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Spirit Airlines, United Airlines and Frontier 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

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Alaska Airlines

8.1

Very good

9,197 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Delta

8.0

Very good

10,402 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

United Airlines

7.4

Good

10,755 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

American Airlines

7.3

Good

14,260 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Spirit Airlines

6.4

Okay

8,602 reviews

Alaska Airlines

8.1

Very good

9,197 reviews

Check prices

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

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 5h 50m 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 Spirit Airlines for just $136, but on average you can expect to pay $188.
Are there last-minute flights available from St. Louis to San Antonio for under $300?
There are currently 13+ open flights from St. Louis to San Antonio within the next 7 days for less than $300.
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 Spirit Airlines. Our recent data shows that you can find tickets from as low as $136 on this airline. An additional option worth looking into is Frontier, starting at $138. Spirit Airlines is currently priced 64% 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 $88. Users have also found prices from $101 and $294 on Frontier and American Airlines, respectively.
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.
Can I find deals for flights from St. Louis to San Antonio that include extra baggage allowance?
The amount of baggage you can bring on your St. Louis to San Antonio flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.
Can I find deals on flights from St. Louis to San Antonio with specific airlines?
Yes, Cheapflights allows you to browse and filter St. Louis to San Antonio flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.
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.
Can I find deals for flights from St. Louis to San Antonio that allow pets onboard?
Many airlines flying from St. Louis to San Antonio offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.
Can I find deals on last-minute flights from St. Louis to San Antonio?
Yes, you can often find last-minute deals on St. Louis to San Antonio flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.
How recently were the St. Louis to San Antonio flight deals updated?
The St. Louis to San Antonio flight deals you see on this page were last updated on 6/2.
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 month to book a flight from St. Louis to San Antonio?
Currently, September is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $292). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.

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Other flights to San Antonio
Explore flights to San Antonio departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 2, 2024.

Top 5 airlines flying from St. Louis to San Antonio

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$132	Average$198	FlexibilityNo cancel fee	On-time62%	Search Frontier flights
Spirit Airlines	Cheapest$161	Average$277	FlexibilityNo cancel fee	On-time65%	Search Spirit Airlines flights
United Airlines	Cheapest$174	Average$423	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Delta	Cheapest$176	Average$316	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
American Airlines	Cheapest$257	Average$406	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

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Hourly flight availability from St. Louis to San Antonio

1%of flight departures	Early morningMidnight to 6 am
36%of flight departures	Morning6 am to noon
36%of flight departures	AfternoonNoon to 6 pm
27%of flight departures	Evening6 pm to midnight

Midnight

6 AM

Noon

6 PM

Weekly flight availability from St. Louis to San Antonio

Sunday	2daily flights
Monday	1daily flight
Tuesday	1daily flight
Wednesday	1daily flight
Thursday	1daily flight
Friday	1daily flight
Saturday	2daily flights

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Cheap flights from St. Louis to San Antonio (STL - SAT) from $88

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 6/11. 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.

The best prices from Lambert-St Louis to San Antonio are usually found in August or May, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from St. Louis to San Antonio

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Cheap Spirit Airlines flights from St. Louis to San Antonio

Check out some of the cheapest Spirit Airlines 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.

Cheap United Airlines flights from St. Louis to San Antonio

To aid your search, here are some of the cheapest United Airlines flights we've found from St. Louis to San Antonio. Ensure the flight price, dates, time, and airline match your criteria before you book.

Cheap St. Louis to San Antonio flights in June & July 2024

Find cheap flight options from St. Louis to San Antonio specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Prices were last updated on June 2, 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.

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 2,807,690 searches. Data last updated June 2, 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.

St. Louis to San Antonio flights leaving soon

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.

One-way flights to San Antonio from St. Louis

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.

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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 May 31, 2024.

Booking 58 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 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 May 26, 2024.

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.

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.

Reviews of airlines servicing San Antonio

Peruse reviews from past customers who have flown with Spirit Airlines, United Airlines and Frontier 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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Alternative routes for St. Louis to San AntonioSee prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from St. Louis to San Antonio

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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 June 2, 2024.

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 June 2, 2024.

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User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations

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

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

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

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

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Alternative routes for St. Louis to San Antonio
See prices for flight routes from nearby airports that may be better suited for you.