St. Louis

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

The best prices from San Antonio to Lambert-St Louis are usually found in August or April, booked 37 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

How to find the cheapest flight from San Antonio to St. Louis

All the information you need to plan the best SAT to STL flight in 2022: compare San Antonio to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

SAT - STL

Price

$177 - $366

STL

Temperature

32 - 80.6 °F

STL

Precipitation

2.2 - 4.7 inches

Popular in

January

High demand for flights, 27% potential price rise

Cheapest in

August

Best time to find cheap flights, 34% potential price drop

Round-trip from

$177

From San Antonio to Lambert-St Louis

One-way from

$128

One-way flight from San Antonio to Lambert-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 36 days before your planned departure. Booking around this time can save you about 50% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $293 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $388.

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 January. Prices are generally better when you fly from San Antonio to St. Louis in August, with the cheapest ticket starting at $174.

When is the cheapest time to fly from San Antonio to St. Louis (SAT - 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 45% versus a flight in the afternoon.

Cheap flights from San Antonio to St. Louis in January, February 2022

The best prices found for SAT to STL flights for January, February
Feb 11 - Feb 14
SAT

San Antonio

STL

Lambert-St Louis

1 stop

13h 56m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$127

Frontier

View Deal

Deal found 1/21/22

Feb 4 - Feb 7
SAT

San Antonio

STL

Lambert-St Louis

1 stop

19h 17m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$129

Frontier

View Deal

Deal found 1/22/22

Feb 12 - Feb 14
SAT

San Antonio

STL

Lambert-St Louis

1 stop

16h 17m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$147

Frontier

View Deal

Deal found 1/21/22

San Antonio to St. Louis 2022 flight deals

Cheap flights to St. Louis from San Antonio found for this year
Feb 11 - Feb 14
SAT

San Antonio

STL

Lambert-St Louis

1 stop

13h 56m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$127

Frontier

View Deal

Deal found 1/21/22

Feb 4 - Feb 7
SAT

San Antonio

STL

Lambert-St Louis

1 stop

19h 17m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$129

Frontier

View Deal

Deal found 1/22/22

Feb 12 - Feb 14
SAT

San Antonio

STL

Lambert-St Louis

1 stop

16h 17m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 26m
$147

Frontier

View Deal

Deal found 1/21/22

Last minute flights from San Antonio to St. Louis

Late deals on return flights to St. Louis from San Antonio, departing today and this week
Jan 29 - Jan 31
SAT

San Antonio

STL

Lambert-St Louis

1 stop

5h 44m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 10m
$260

Multiple Airlines

View Deal

Deal found 1/23/22

Jan 29 - Jan 31
SAT

San Antonio

STL

Lambert-St Louis

2 stops

11h 39m
STL

Lambert-St Louis

SAT

San Antonio

1 stop

7h 10m
$266

Frontier

View Deal

Deal found 1/23/22

Jan 29 - Jan 31
SAT

San Antonio

STL

Lambert-St Louis

2 stops

11h 39m
STL

Lambert-St Louis

SAT

San Antonio

2 stops

12h 17m
$453

United Airlines

View Deal

Deal found 1/23/22

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

The cheapest one-way flights from San Antonio to St. Louis
Feb 4
SAT

San Antonio

STL

Lambert-St Louis

1 stop

19h 17m
$70

Frontier

View Deal

Deal found 1/22/22

Feb 5
SAT

San Antonio

STL

Lambert-St Louis

1 stop

16h 17m
$91

Frontier

View Deal

Deal found 1/22/22

Feb 5
SAT

San Antonio

STL

Lambert-St Louis

2 stops

21h 15m
$106

Multiple Airlines

View Deal

Deal found 1/22/22

Related info for your journey

Useful info, stats and facts about San Antonio to St. Louis flights.

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

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, United Airlines, and Frontier flying from San Antonio to Lambert-St Louis have implemented new flexible cancellation policies.

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

Yes, there are multiple flights from San Antonio to St. Louis for under $200. The cheapest flight booked recently is on Frontier for just $127, but on average you can expect to pay $181.

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

There are currently 5+ open flights from San Antonio to St. Louis within the next 7 days for less than $300.

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

Frontier, at $127, was found to be the cheapest airline from San Antonio to St. Louis. An alternate airline flying to your destination would be American Airlines. Users have found that Frontier is 52% 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 $70. United Airlines flights start at $132 while deals on Sun Country Air start at $147 one-way.

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

On average you can expect to pay $195 for a flight from San Antonio to St. Louis. The cheapest flight overall is $99 while the most popular route, (San Antonio - Lambert-St Louis) is currently priced at $181.

Can I fly to Lambert-St Louis from San Antonio right now?

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

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

COVID-19 testing requirements
Visitors from San Antonio must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Lambert-St Louis.

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

Can I fly back to San Antonio from Lambert-St Louis?

Returning to San Antonio from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to San Antonio.

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

Alternative routes for San Antonio to St. Louis

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

Top 4 airlines flying from San Antonio to St. Louis

The chart below displays the airlines Cheapflights users traveling from San Antonio to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Delta
Cheapest$106
Average$267
FlexibilityNo cancel fee
On-timeN/A
COVID-19 safety
United Airlines
Cheapest$114
Average$287
FlexibilityNo cancel fee
On-time69%
COVID-19 safety
Frontier
Cheapest$121
Average$246
FlexibilityNo cancel fee
On-time62%
COVID-19 safety
American Airlines
Cheapest$138
Average$321
FlexibilityNo cancel fee
On-time71%
COVID-19 safety

Hourly flight availability from San Antonio to St. Louis

See what time of day planes typically take off from San Antonio to St. Louis
1%of flight departuresEarly morningMidnight to 6 am
33%of flight departuresMorning6 am to noon
66%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from San Antonio to St. Louis

See how many times per day planes take to the skies headed from San Antonio to St. Louis
Sunday1daily flight
Monday1daily flight
Tuesday0daily flights
Wednesday0daily flights
Thursday1daily flight
Friday1daily flight
Saturday1daily flight