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$69+ Cheap flights from St. Louis to San Antonio (STL - SAT)

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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAT
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Lambert-St Louis to San Antonio are usually found in August or September, booked 29 days in advance, depart on a Wednesday or Saturday and return on a Monday

Cheap flight deals from St. Louis to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Antonio (SAT). 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 November 20, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

April

Cheapest in

August

Round-trip from

$128
(CheapOair)

One-way from

$69
(CheapOair)
Provider with most accurate pricing for Lambert-St Louis-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-San Antonio flights.
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High demand for flights, 17% potential price rise
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Best time to find cheap flights, 24% potential price drop
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From Lambert-St Louis to San Antonio
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One-way flight from Lambert-St Louis to San Antonio
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Find flight deals from St. Louis to San Antonio

Cheapest flights from St. Louis to San Antonio
Explore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This CheapOair deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/135:02 pmSTL - SAT
1 stop25h 08mFrontier
Tue 12/1710:27 pmSAT - STL
1 stop9h 46mFrontier
Deal found 11/20$148
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/115:45 amSTL - SAT
1 stop7h 48mAmerican Airlines
Sun 12/155:00 amSAT - STL
1 stop5h 47mAmerican Airlines
Deal found 11/20$218
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1110:21 amSTL - SAT
1 stop6h 59mDelta
Sun 12/155:24 amSAT - STL
1 stop6h 39mDelta
Deal found 11/19$238
This CheapOair deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/55:02 pmSTL - SAT
1 stop25h 08mMultiple Airlines
Wed 1/87:37 pmSAT - STL
1 stop19h 06mMultiple Airlines
Deal found 11/19$266
This United Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/134:45 pmSTL - SAT
1 stop4h 33mUnited Airlines
Tue 12/177:18 amSAT - STL
2 stops9h 11mUnited Airlines
Deal found 11/20$297
This Southwest deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1711:50 amSTL - SAT
Nonstop2h 20mSouthwest
Tue 12/2412:45 pmSAT - STL
Nonstop2h 05mSouthwest
Deal found 11/19$393
This Mytrip deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/245:21 pmSTL - SAT
2 stops16h 14mSpirit Airlines
Mon 11/251:18 pmSAT - STL
2 stops27h 08mSpirit Airlines
Deal found 11/19$519
This Alaska Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/117:00 amSTL - SAT
2 stops16h 07mAlaska Airlines
Sun 12/157:00 amSAT - STL
2 stops25h 54mAlaska Airlines
Deal found 11/20$677

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

Customize your flight search to find flights from St. Louis to San Antonio 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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 1/17

5:05 pm-6:15 pm

1 stop25h 10m

San Antonio

Mon 1/20

7:15 pm-11:31 pm

1 stop28h 16m

$128

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 1/9

6:00 pm-11:51 pm

1 stop5h 51m

San Antonio

Sun 1/12

5:45 am-10:48 am

1 stop5h 03m

$158

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 12/11

10:21 am-5:20 pm

1 stop6h 59m

San Antonio

Sun 12/15

5:24 am-12:03 pm

1 stop6h 39m

$238

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 2/4

6:30 am-3:42 pm

2 stops9h 12m

San Antonio

Sun 2/9

5:48 pm-10:20 pm

1 stop4h 32m

$243

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 12/5

5:02 pm-6:10 pm

1 stop25h 08m

San Antonio

Wed 1/8

7:37 pm-2:43 pm

1 stop19h 06m

$266

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 2/4

10:20 am-6:15 pm

1 stop7h 55m

San Antonio

Sun 2/9

12:10 pm-2:15 pm

Nonstop2h 05m

$296

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Tue 5/6

7:57 am-11:26 am

2 stops27h 29m

San Antonio

Thu 5/8

12:16 pm-7:07 am

2 stops18h 51m

$532

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 12/11

7:00 am-11:07 pm

2 stops16h 07m

San Antonio

Sun 12/15

7:00 am-8:54 am

2 stops25h 54m

$677

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 12/18

3:53 pm-5:42 pm

1 stop25h 49m

$69

St. LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 1/20

1:40 pm-7:41 pm

1 stop6h 01m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 15 results
1
2

Compare providers for flights from St. Louis to San Antonio

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 St. Louis to San Antonio in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust 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 St. Louis-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-San Antonio flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-San Antonio 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 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
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.

Travel insights for flights from St. Louis to San Antonio

Get recent, data-driven insights about flights from St. Louis to San Antonio including ideal travel times, pricing trends, and more.

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 November 15, 2024.

Booking 29 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 month to book a flight from St. Louis to San Antonio?

Currently, August is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $295). 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 is the cheapest time of day to fly from STL to SAT?

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 November 20, 2024.

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 morning, which can drop the price by up to 8% versus a flight at noon.

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 November 18, 2024.

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

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Antonio, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated November 20, 2024.
Peruse reviews from past customers who have flown with American Airlines, Southwest 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.
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,461 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Crew

8.7

Overall

8.1

Food

7.2

Entertainment

7.7

Comfort

8.1

Boarding

8.2

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

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.

  • 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 Frontier. Our recent data shows that you can find tickets from as low as $128 on this airline. Additional options worth looking into are American Airlines and Delta, starting at $158 and $238 round-trip. Frontier 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 Frontier. According to our data, you can fly for as low as $69. Users have also found prices from $109 and $114 on American Airlines and Delta, 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 $460, our data indicates the cheapest price to be $248. The most popular route (Lambert-St Louis - San Antonio), is priced around $188.

  • 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.

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

    Currently, August is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $295). 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.

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Top 5 airlines flying from St. Louis to San Antonio

Discover the top 5 airlines that operate flights from St. Louis to San Antonio. 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$202FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$218Average$341FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$221Average$374FlexibilityNo cancel feeOn-time71%
DeltaCheapest$238Average$291FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$322Average$407FlexibilityNo cancel feeOn-time63%
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