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

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The best prices from Lambert-St Louis to San Antonio are usually found in January or February, booked 36 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

How to find the cheapest flight from
St. Louis (STL) to San Antonio (SAT)

All the information you need to plan the best STL to SAT flight in 2022: compare St. Louis to San Antonio flight prices with the expected peak season, weather and rainfall in San Antonio.
STL - SAT
Price
$248 - $449
SAT
Temperature
51.8 - 84.2 °F
SAT
Rainfall
1.6 - 3.7 inches

Popular in

May

High demand for flights, 27% potential price rise

Cheapest in

January

Best time to find cheap flights, 24% potential price drop

Round-trip from

$248

From Lambert-St Louis to San Antonio

One-way from

$129

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
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 evening, which can drop the price by up to 20% versus a flight in the morning.

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

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 50% 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 37 days in advance to save up to 37% 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 37 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 $359, or $446 for flights within the next 24 hours.

Cheap flights from St. Louis to San Antonio in June, July 2022

The best prices found for STL to SAT flights for June, July
25 Jun - 29 Jun
$176pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis
23 Jun - 29 Jun
$196pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis
23 Jun - 29 Jun
$212pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to San Antonio 2022 flight deals

Cheap flights to San Antonio from St. Louis found for this year
25 Jun - 29 Jun
$176pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis
23 Jun - 29 Jun
$196pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis
22 Jun - 29 Jun
$212pp
STL
Lambert-St Louis
Frontier
 
1 STOP
SAT
San Antonio
SAT
San Antonio
Frontier
 
1 STOP
STL
Lambert-St Louis

Last minute flights from St. Louis to San Antonio

Late deals on round-trip flights to San Antonio from St. Louis, departing today and this week
28 Jun - 3 Jul
$329pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
SAT
San Antonio
SAT
San Antonio
American Airlines
 
1 STOP
STL
Lambert-St Louis
3 Jul - 3 Jul
$358pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
SAT
San Antonio
SAT
San Antonio
American Airlines
 
1 STOP
STL
Lambert-St Louis
28 Jun - 4 Jul
$390pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
SAT
San Antonio
SAT
San Antonio
United Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to San Antonio from St. Louis

The cheapest one-way flights from St. Louis to San Antonio
2:20 am - 7:59 am
Delta
1 Stop
5h 39m
STL - SAT
Delta
$129
Delta
2:20 am - 7:08 am
United Airlines
1 Stop
4h 48m
STL - SAT
United Airlines
$242
United
7:28 am - 6:51 pm
Frontier
2 Stops
11h 23m
STL - SAT
Frontier
$334
Kiwi.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">San Antonio</span> flights.

Flight FAQs

From St. Louis to San Antonio

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 19m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Lambert-St Louis to San Antonio.

Which airlines flying from Lambert-St Louis to San Antonio have flexible cancellations due to COVID-19?

Some of our airline partners flying from Lambert-St Louis to San Antonio have new flexible policies in place due to COVID-19. American Airlines, United Airlines, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

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 Multiple Airlines for just $196, but on average you can expect to pay $325.

Are there last-minute flights available from St. Louis to San Antonio for under $400?

There are currently 14+ open flights from St. Louis to San Antonio within the next 7 days for less than $400.

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

Within the past month, 57 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 Delta. Our recent data shows that you can find tickets from as low as $224 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $298 and $351 round-trip. Delta is currently priced 31% 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 $88. Users have also found prices from $112 and $182 on Delta and American 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 $476, our data indicates the cheapest price to be $206. The most popular route (Lambert-St Louis - San Antonio), is priced around $196.

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

Consider Major Airline, American Airlines or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to San Antonio.

COVID Restrictions

View COVID Travel Restrictions for San Antonio, TX

Do I need a COVID test to fly to San Antonio from St. Louis?

Information is based on travel restrictions for travel to San Antonio within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter San Antonio.

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering San Antonio.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering San Antonio.

Do I need a test to fly back to St. Louis from San Antonio?

Returning to Lambert-St Louis from San Antonio

COVID-19 testing requirements
Visitors from San Antonio are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from San Antonio are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for San Antonio, TX

Alternative routes for St. Louis to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Antonio

Things to know before you go - useful duration and weather info for your trip from St. Louis to San Antonio.

Airports servicing St. Louis

Airports servicing San Antonio

Top 4 airlines flying from Lambert-St Louis to San Antonio

The chart below displays the airlines Cheapflights users traveling from St. Louis to San Antonio choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$97 $152 No cancel fee 62%
Delta
$137 $247 No cancel fee N/A
United Airlines
$182 $368 No cancel fee 69%
American Airlines
$182 $352 No cancel fee 71%

Hourly flight availability from St. Louis to San Antonio

See what time of day planes typically take off from St. Louis towards San Antonio.
Early morning Midnight to 6 AM 50% of STL to SAT departures
Evening 6 PM to midnight 50% of STL to SAT departures
Morning 6 AM to noon 0% of STL to SAT departures
Afternoon Noon to 6 PM 0% of STL to SAT departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to San Antonio
See how many times per day planes take to the skies headed from St. Louis to San Antonio.
Sunday
2 daily flights
Monday
2 daily flights
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
2 daily flights
Friday
2 daily flights
Saturday
0 flights
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