$85+ Cheap flights from San Antonio to St. Louis (SAT - STL)
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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Antonio to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.The best prices from San Antonio to Lambert-St Louis are usually found in April or September, booked 54 days in advance, depart on a Thursday or Wednesday and return on a Saturday
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 March 3, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $170 (Frontier) |
One-way from | $85 (Frontier) |
Popular in | November |
Cheapest in | April |
Average price | $391 |
Good round-trip deal | $328 or less |
Good one-way deal | $204 or less |
Find flight deals from San Antonio to St. Louis
Cheapest flights from San Antonio to St. LouisExplore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.
Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 3, 2025.
This Frontier deal was found by Cheapflights users on 3/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 3/2. 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.
This American Airlines deal was found by Cheapflights users on 3/2. 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.
This United Airlines deal was found by Cheapflights users on 3/2. 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.
This Mytrip deal was found by Cheapflights users on 3/2. 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.
This Delta deal was found by Cheapflights users on 3/2. 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.
This Mytrip deal was found by Cheapflights users on 3/2. 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.
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 2,558,603 searches. Data last updated March 3, 2025.
Fly from
Fly to
Route
Depart
Return
Price
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 4/3
2:18 pm-9:06 am
1 stop18h 48m
Lambert-St Louis
Mon 4/7
6:51 pm-1:54 pm
1 stop19h 03m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 4/3
3:40 pm-10:00 pm
1 stop6h 20m
Lambert-St Louis
Mon 4/7
6:15 pm-8:35 pm
Nonstop2h 20m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Wed 3/26
5:54 am-11:24 am
1 stop5h 30m
Lambert-St Louis
Sat 3/29
5:37 pm-12:04 am
1 stop6h 27m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 3/27
6:45 am-12:12 pm
1 stop5h 27m
Lambert-St Louis
Sun 3/30
6:15 am-11:15 am
1 stop5h 00m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 4/3
9:35 pm-8:10 pm
3 stops22h 35m
Lambert-St Louis
Sun 4/6
6:47 pm-10:03 am
1 stop15h 16m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 8/25
6:45 am-2:35 pm
1 stop7h 50m
Lambert-St Louis
Sat 9/6
11:51 am-5:07 pm
1 stop5h 16m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 5/1
1:43 pm-9:05 pm
1 stop7h 22m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 4/1
5:30 am-1:08 pm
1 stop7h 38m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 4/3
5:00 am-7:05 am
Nonstop2h 05m
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 4/1
11:00 am-10:18 pm
2 stops11h 18m
Compare providers for flights from San Antonio to St. Louis
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 San Antonio to St. Louis in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Antonio-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-St. Louis 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 San Antonio-St. Louis 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 San Antonio to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Antonio with our price prediction graph.
Travel insights for flights from San Antonio to St. Louis
Get recent, data-driven insights about flights from San Antonio to St. Louis including ideal travel times, pricing trends, and more.
How far ahead should I 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 February 28, 2025.
To ensure you get the cheapest price possible for a flight from San Antonio to St. Louis, you should look to book at least 54 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.
What is the cheapest month to book a flight from San Antonio to St. Louis?
Currently, August is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $311). Flying from San Antonio to St. Louis in March is currently the most expensive (average of $356). 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 SAT to STL?
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 March 3, 2025.
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 64% versus a flight at noon.
What is the cheapest day 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 February 23, 2025.
Travelers seeking maximum savings on their San Antonio to St. Louis flight should consider departing on Monday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in St. Louis by month
Plan your trip to St. Louis by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.
Temperature in St. Louis by month
Plan your trip to St. Louis by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 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 March 3, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta 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.
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
Crew
Overall
Comfort
Boarding
Entertainment
Food
Reviews
Ila,Mar 2025
HOU - DAL
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.
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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.
Top 5 airlines flying from San Antonio to St. Louis
Discover the top 5 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 2,558,603 searches. Data last updated March 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$127 | Average$185 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$134 | Average$260 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$216 | Average$364 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$227 | Average$426 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$248 | Average$361 | FlexibilityNo cancel fee | On-time69% |