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Cheap flights from San Antonio to St. Louis (SAT - STL) from $105

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 5/6. 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.
SAT — STL
mai 3 — mai 101
From?
To?
sex 5/3
sex 5/10
1 adult, Economy
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The best prices from San Antonio to Lambert-St Louis are usually found in February or September, booked 50 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from San Antonio to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated abril 28, 2024.

Popular in

August

Cheapest in

February

Round-trip from

$323

One-way from

$140
High demand for flights, 32% potential price rise
Search Deals
Best time to find cheap flights, 27% potential price drop
Search Deals
From San Antonio to Lambert-St Louis
Search Deals
One-way flight from San Antonio to Lambert-St Louis
Search Deals

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 Tuesday. 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 50 days before your planned departure. Booking around this time can save you about 111% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $228 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $375.

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 August. Prices are generally better when you fly from San Antonio to St. Louis in February, with the cheapest ticket starting at $107.

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 40% versus a flight in the afternoon.

Cheap United Airlines flights from San Antonio to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between San Antonio and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
Find some of the cheapest United Airlines flights traveling from San Antonio to St. Louis. Make sure to double check the flight details before booking.
qua 5/159:45 amSAT - STL
1 stop6h 38mUnited Airlines
sáb 5/188:47 amSTL - SAT
2 stops14h 36mUnited Airlines
Deal found 4/27$510
sex 6/285:50 pmSAT - STL
1 stop4h 24mUnited Airlines
seg 7/110:19 amSTL - SAT
2 stops10h 34mUnited Airlines
Deal found 4/27$564
qui 5/29:45 amSAT - STL
1 stop6h 38mUnited Airlines
sáb 5/48:05 amSTL - SAT
2 stops12h 53mUnited Airlines
Deal found 4/27$576
qua 5/87:30 amSAT - STL
2 stops13h 39mUnited Airlines
dom 5/125:35 pmSTL - SAT
1 stop5h 32mUnited Airlines
Deal found 4/27$664
sex 6/285:30 amSAT - STL
2 stops10h 10mUnited Airlines
seg 7/110:19 amSTL - SAT
2 stops10h 34mUnited Airlines
Deal found 4/27$755

Cheap Spirit Airlines flights from San Antonio to St. Louis

Explore cheap flight options specifically provided by Spirit Airlines for the route between San Antonio and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
Have a look at some of the cheapest available Spirit Airlines flights departing from San Antonio and landing in St. Louis. Deals are refreshing constantly so come back soon for more options.
qui 5/1611:26 amSAT - STL
1 stop7h 14mSpirit Airlines
sáb 5/185:15 pmSTL - SAT
1 stop7h 06mSpirit Airlines
Deal found 4/28$191
qua 5/152:31 pmSAT - STL
2 stops26h 58mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$224
qua 5/156:45 amSAT - STL
3 stops35h 55mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$240
sáb 5/255:10 pmSAT - STL
2 stops24h 19mSpirit Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$295
qui 5/1611:26 amSAT - STL
1 stop7h 14mSpirit Airlines
sáb 5/185:15 pmSTL - SAT
2 stops25h 29mSpirit Airlines
Deal found 4/28$314
sáb 5/255:10 pmSAT - STL
2 stops24h 19mSpirit Airlines
seg 6/34:05 pmSTL - SAT
3 stops29h 58mSpirit Airlines
Deal found 4/26$327
sáb 5/258:00 pmSAT - STL
3 stops21h 29mSpirit Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$339
qua 5/156:45 amSAT - STL
3 stops35h 55mSpirit Airlines
sáb 5/185:15 pmSTL - SAT
3 stops31h 00mSpirit Airlines
Deal found 4/27$371
qua 5/158:59 pmSAT - STL
2 stops21h 41mSpirit Airlines
sáb 5/185:15 pmSTL - SAT
3 stops31h 00mSpirit Airlines
Deal found 4/27$382

Cheap San Antonio to St. Louis flights in April & May 2024

Find cheap flight options from San Antonio to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Prices were last updated on abril 28, 2024.
These are some of the most attractive deals on flights from San Antonio to St. Louis in 2024. Check back in a little while for more flight options.
qua 5/159:54 pmSAT - STL
1 stop18h 17mMultiple Airlines
sáb 5/185:15 pmSTL - SAT
1 stop7h 06mMultiple Airlines
Deal found 4/27$161
qua 5/159:54 pmSAT - STL
1 stop12h 19mMultiple Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mMultiple Airlines
Deal found 4/26$187
sáb 5/2512:06 pmSAT - STL
1 stop19h 02mMultiple Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mMultiple Airlines
Deal found 4/26$212
qua 5/152:31 pmSAT - STL
2 stops26h 58mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$224
qua 5/156:45 amSAT - STL
3 stops35h 55mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$240
qua 5/82:18 pmSAT - STL
1 stop6h 35mMultiple Airlines
dom 5/127:30 pmSTL - SAT
1 stop22h 10mMultiple Airlines
Deal found 4/27$241
qua 5/152:31 pmSAT - STL
2 stops26h 58mMultiple Airlines
seg 5/205:00 pmSTL - SAT
3 stops31h 21mMultiple Airlines
Deal found 4/26$290
sáb 5/255:10 pmSAT - STL
2 stops24h 19mSpirit Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$295
qua 5/156:45 amSAT - STL
3 stops35h 55mMultiple Airlines
seg 5/205:00 pmSTL - SAT
3 stops31h 21mMultiple Airlines
Deal found 4/26$305

San Antonio to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between San Antonio and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
These are some of the most attractive deals on flights from San Antonio to St. Louis in 2024. Check back in a little while for more flight options.
qua 5/159:54 pmSAT - STL
1 stop18h 17mMultiple Airlines
sáb 5/185:15 pmSTL - SAT
1 stop7h 06mMultiple Airlines
Deal found 4/27$161
qua 5/159:54 pmSAT - STL
1 stop12h 19mMultiple Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mMultiple Airlines
Deal found 4/26$187
sáb 5/2512:06 pmSAT - STL
1 stop19h 02mMultiple Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mMultiple Airlines
Deal found 4/26$212
qua 5/152:31 pmSAT - STL
2 stops26h 58mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$224
qua 5/156:45 amSAT - STL
3 stops35h 55mSpirit Airlines
seg 5/204:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$240
qua 5/82:18 pmSAT - STL
1 stop6h 35mMultiple Airlines
dom 5/127:30 pmSTL - SAT
1 stop22h 10mMultiple Airlines
Deal found 4/27$241
sex 6/287:07 pmSAT - STL
1 stop16h 06mMultiple Airlines
seg 7/12:41 pmSTL - SAT
1 stop29h 00mMultiple Airlines
Deal found 4/27$282
qua 5/152:31 pmSAT - STL
2 stops26h 58mMultiple Airlines
seg 5/205:00 pmSTL - SAT
3 stops31h 21mMultiple Airlines
Deal found 4/26$290
sáb 5/255:10 pmSAT - STL
2 stops24h 19mSpirit Airlines
seg 6/34:05 pmSTL - SAT
1 stop8h 36mSpirit Airlines
Deal found 4/26$295

San Antonio to St. Louis flights leaving soon

Find last-minute flight options from San Antonio to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
Check out these flights departing soon from San Antonio to St. Louis. Users should examine the flight details to ensure there are no surprises.
qui 5/211:28 amSAT - STL
1 stop7h 12mMultiple Airlines
sáb 5/47:51 pmSTL - SAT
1 stop15h 05mMultiple Airlines
Deal found 4/27$418
qui 5/29:45 amSAT - STL
1 stop6h 38mUnited Airlines
sáb 5/48:05 amSTL - SAT
2 stops12h 53mUnited Airlines
Deal found 4/27$576
qui 5/211:28 amSAT - STL
2 stops26h 30mSpirit Airlines
sáb 5/411:39 amSTL - SAT
2 stops26h 01mSpirit Airlines
Deal found 4/27$900

One-way flights to St. Louis from San Antonio

Search for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
Users traveling one-way from San Antonio to St. Louis can select one of these great deals. Users needing a return flight from San Antonio to St. Louis should utilize the search form above.
seg 5/69:36 pmSAT - STL
1 stop12h 42mFrontier
Deal found 4/27$105
sex 6/74:19 pmSAT - STL
1 stop18h 25mFrontier
Deal found 4/27$140
seg 5/62:20 pmSAT - STL
2 stops19h 24mSpirit Airlines
Deal found 4/27$228
seg 5/68:02 pmSAT - STL
3 stops34h 58mMultiple Airlines
Deal found 4/27$279
sex 6/75:55 pmSAT - STL
2 stops21h 46mUnited Airlines
Deal found 4/27$407
sex 6/79:40 amSAT - STL
3 stops10h 02mUnited Airlines
Deal found 4/27$916

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

Customize your flight search to find flights from San Antonio to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$161 - $510

Route

Depart

Return

Price

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/15

1 stop18h 17m

Lambert-St Louis

sáb 5/18

1 stop7h 06m

$161

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/15

1 stop12h 19m

Lambert-St Louis

seg 5/20

1 stop8h 36m

$187

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qui 5/16

1 stop7h 14m

Lambert-St Louis

sáb 5/18

1 stop7h 06m

$191

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

sáb 5/25

1 stop19h 02m

Lambert-St Louis

seg 6/3

1 stop8h 36m

$212

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/15

2 stops26h 58m

Lambert-St Louis

seg 5/20

1 stop8h 36m

$224

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/15

3 stops35h 55m

Lambert-St Louis

seg 5/20

1 stop8h 36m

$240

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/8

1 stop6h 35m

Lambert-St Louis

dom 5/12

1 stop22h 10m

$241

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

sáb 5/25

2 stops24h 19m

Lambert-St Louis

seg 6/3

1 stop8h 36m

$295

San AntonioLambert-St Louis

SAT - STL

SATSTL

San Antonio

qua 5/15

1 stop6h 38m

Lambert-St Louis

sáb 5/18

2 stops14h 36m

$510

Flights are sorted by cheapest first

Deals found on 4/27

When is the best time to 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 January 28, 2024.
To ensure you get the cheapest price possible for a flight from San Antonio to St. Louis, you should look to book at least 49 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.
Search Deals

When is the cheapest time 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 April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their San Antonio to St. Louis flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from San Antonio to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from San Antonio to St. Louis is currently $346 while a round-trip flight costs $251. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $323). Flying from San Antonio to St. Louis in July is currently the most expensive (average of $378). 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.

January

$326

February

$331

March

$357

April

$337

May

$350

June

$373

July

$378

August

$336

September

$323

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated abril 28, 2024.
Peruse reviews from past customers who have flown with United Airlines and Spirit 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.
Alaska Airlines
8.1
Very good
9,117 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,117 reviews
Alaska Airlines
8.1
Very good
9,117 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
11,221 reviews
Alaska Airlines
8.1
Very good
9,117 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Spirit Airlines
6.4
Okay
8,739 reviews
Alaska Airlines
8.1
Very good
9,117 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Frontier
6.3
Okay
4,129 reviews
Alaska Airlines
8.1
Very good
9,117 reviews
Check prices

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Entertainment

7.3

Food

7.3

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

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.

  • 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 4 different airlines have flights from San Antonio (SAT) to Lambert-St Louis (STL) on a regular basis. There is 1 flight 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 7h 44m.

  • 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 Multiple Airlines for just $161, but on average you can expect to pay $299.

  • Are there last-minute flights available from San Antonio to St. Louis for under $500?

    There are currently 3+ open flights from San Antonio to St. Louis within the next 7 days for less than $500.

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

    Spirit Airlines, at $191, was found to be the cheapest airline from San Antonio to St. Louis.Alternate airlines to your destination round-trip include United Airlines and Alaska Airlines. Users have found that Spirit Airlines is 55% 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 $105. Spirit Airlines flights start at $228 while deals on United Airlines start at $407 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 does SAT to STL mean?

    SAT stands for San Antonio Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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

    The amount of baggage you can bring on your San Antonio to St. Louis 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 San Antonio to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter San Antonio to St. Louis 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 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.

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

    Many airlines flying from San Antonio to St. Louis 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 San Antonio to St. Louis?

    Yes, you can often find last-minute deals on San Antonio to St. Louis 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 San Antonio to St. Louis flight deals updated?

    The San Antonio to St. Louis flight deals you see on this page were last updated on 4/27.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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

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Top 4 airlines flying from San Antonio to St. Louis

Discover the top 4 airlines that operate flights from San Antonio to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,991,349 searches. Data last updated abril 28, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$123Average$225FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$214Average$364FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$268Average$406FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$277Average$482FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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Search flights from San Antonio to St. Louis by cabin class

Find flights from San Antonio to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from San Antonio to St. Louis

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 abril 28, 2024.
50%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
50%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

Explore weekly flight availability from San Antonio to St. Louis. 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 abril 28, 2024.
Sunday3daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday2daily flights

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