HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

$81+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAT
Jul 31 — Aug 71
From?
To?
Wed 7/31
Wed 8/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Leverage Cheapflights for Your Next Trip

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 Lambert-St Louis to San Antonio are usually found in August or September, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

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 July 26, 2024.

Popular in

December

Cheapest in

August

Round-trip from

$139
(mytrip.com)

One-way from

$81
(CheapOair)
High demand for flights, 20% potential price rise
Search Deals
Best time to find cheap flights, 21% potential price drop
Search Deals
From Lambert-St Louis to San Antonio
Search Deals
One-way flight from Lambert-St Louis to San Antonio
Search Deals

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

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 52% 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 59 days in advance to save up to 219% 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 59 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 $178, or $563 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to San Antonio?

August can be a great time to fly to San Antonio from St. Louis with a flight ticket averaging about $370. Cheapflights users have found deals in the month of August for as cheap as $182. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from STL to 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 36% versus a flight in the afternoon.

Cheap St. Louis to San Antonio flights in July & August 2024

Find cheap flight options from St. Louis to San Antonio specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,751,780 searches. Prices were last updated on July 26, 2024.
These are some of the most attractive deals on flights from St. Louis to San Antonio in 2024. Check back in a little while for more flight options.
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/277:48 pmSTL - SAT
1 stop25h 05mFrontier
Fri 8/304:59 pmSAT - STL
1 stop15h 44mFrontier
Deal found 7/26$144
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/277:48 pmSTL - SAT
1 stop25h 05mFrontier
Thu 8/298:32 pmSAT - STL
1 stop22h 16mFrontier
Deal found 7/26$145
This CheapOair deal was found by Cheapflights users on 7/26. 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.
Wed 8/147:48 pmSTL - SAT
1 stop23h 44mFrontier
Wed 8/215:36 pmSAT - STL
1 stop15h 07mFrontier
Deal found 7/26$157
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/910:32 pmSTL - SAT
1 stop21h 01mFrontier
Sun 8/1110:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/25$171
This Frontier deal was found by Cheapflights users on 7/26. 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.
Thu 8/811:00 pmSTL - SAT
1 stop9h 15mFrontier
Sun 8/1110:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/26$208
This mytrip.com deal was found by Cheapflights users on 7/26. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2612:27 pmSTL - SAT
1 stop27h 18mFrontier
Sun 9/18:32 pmSAT - STL
1 stop23h 52mFrontier
Deal found 7/26$234
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/19:44 pmSTL - SAT
1 stop17h 23mFrontier
Sat 8/310:44 pmSAT - STL
1 stop13h 24mFrontier
Deal found 7/25$240
This mytrip.com deal was found by Cheapflights users on 7/26. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/257:48 pmSTL - SAT
1 stop25h 29mFrontier
Sun 9/18:32 pmSAT - STL
1 stop23h 52mFrontier
Deal found 7/26$247
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/19:44 pmSTL - SAT
1 stop17h 23mFrontier
Sun 8/410:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/25$249

St. Louis to San Antonio 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and San Antonio in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,751,780 searches. Data last updated July 26, 2024.
These are some of the most attractive deals on flights from St. Louis to San Antonio in 2024. Check back in a little while for more flight options.
This mytrip.com deal was found by Cheapflights users on 7/26. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/163:53 pmSTL - SAT
1 stop19h 02mFrontier
Thu 9/199:40 amSAT - STL
1 stop13h 39mFrontier
Deal found 7/26$139
This mytrip.com deal was found by Cheapflights users on 7/26. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/29:24 pmSTL - SAT
1 stop21h 36mFrontier
Sat 9/711:10 amSAT - STL
1 stop12h 23mFrontier
Deal found 7/26$143
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/277:48 pmSTL - SAT
1 stop25h 05mFrontier
Fri 8/304:59 pmSAT - STL
1 stop15h 44mFrontier
Deal found 7/26$144
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/277:48 pmSTL - SAT
1 stop25h 05mFrontier
Thu 8/298:32 pmSAT - STL
1 stop22h 16mFrontier
Deal found 7/26$145
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/55:23 pmSTL - SAT
1 stop28h 19mFrontier
Sun 9/810:22 pmSAT - STL
1 stop23h 43mFrontier
Deal found 7/25$153
This Frontier deal was found by Cheapflights users on 7/26. 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.
Fri 9/207:53 amSTL - SAT
1 stop11h 34mFrontier
Mon 9/231:16 pmSAT - STL
1 stop11h 20mFrontier
Deal found 7/26$154
This CheapOair deal was found by Cheapflights users on 7/26. 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.
Wed 8/147:48 pmSTL - SAT
1 stop23h 44mFrontier
Wed 8/215:36 pmSAT - STL
1 stop15h 07mFrontier
Deal found 7/26$157
This Booking.com deal was found by Cheapflights users on 7/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/15:30 pmSTL - SAT
1 stop16h 50mFrontier
Wed 10/26:46 pmSAT - STL
1 stop21h 37mFrontier
Deal found 7/26$170
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/910:32 pmSTL - SAT
1 stop21h 01mFrontier
Sun 8/1110:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/25$171

St. Louis to San Antonio flights leaving soon

Find last-minute flight options from St. Louis to San Antonio 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 2,751,780 searches. Data last updated July 26, 2024.
Users seeking a last-minute flight from St. Louis to San Antonio should consider booking one of these fares. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/910:32 pmSTL - SAT
1 stop21h 01mFrontier
Sun 8/1110:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/25$171
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/19:44 pmSTL - SAT
1 stop17h 23mFrontier
Sat 8/310:44 pmSAT - STL
1 stop13h 24mFrontier
Deal found 7/25$240
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/19:44 pmSTL - SAT
1 stop17h 23mFrontier
Sun 8/410:58 pmSAT - STL
1 stop10h 27mFrontier
Deal found 7/25$249
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/54:02 pmSTL - SAT
2 stops22h 48mSpirit Airlines
Tue 8/69:40 pmSAT - STL
1 stop17h 26mSpirit Airlines
Deal found 7/25$252
This CheapOair deal was found by Cheapflights users on 7/26. 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 8/19:44 pmSTL - SAT
1 stop17h 23mFrontier
Tue 8/69:39 pmSAT - STL
1 stop11h 46mFrontier
Deal found 7/26$264
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/54:02 pmSTL - SAT
2 stops22h 48mSpirit Airlines
Tue 8/610:53 pmSAT - STL
2 stops16h 13mSpirit Airlines
Deal found 7/25$286
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3010:32 pmSTL - SAT
1 stop19h 37mFrontier
Sat 8/310:44 pmSAT - STL
1 stop13h 24mFrontier
Deal found 7/25$293
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3110:32 pmSTL - SAT
1 stop22h 20mFrontier
Sat 8/310:44 pmSAT - STL
1 stop13h 24mFrontier
Deal found 7/25$294
This Gotogate deal was found by Cheapflights users on 7/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/3110:32 pmSTL - SAT
1 stop22h 20mFrontier
Fri 8/29:15 amSAT - STL
1 stop24h 10mFrontier
Deal found 7/24$299

One-way flights to San Antonio from St. Louis

Search for one-way flight options from St. Louis to San Antonio. 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 2,751,780 searches. Data last updated July 26, 2024.
If you're seeking multiple options on one-way flights from St. Louis to San Antonio, be sure to check out these deals, which are updated often. Those seeking round-trip flights from St. Louis to San Antonio should utilize the search form at the the top of the page.
This CheapOair deal was found by Cheapflights users on 7/25. 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.
Tue 8/209:36 pmSTL - SAT
1 stop14h 32mFrontier
Deal found 7/25$81
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/811:00 pmSTL - SAT
1 stop9h 15mFrontier
Deal found 7/25$82
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/610:32 pmSTL - SAT
1 stop19h 42mFrontier
Deal found 7/25$103
This United deal was found by Cheapflights users on 7/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2011:10 amSTL - SAT
2 stops10h 20mUnited Airlines
Deal found 7/26$149
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/86:19 pmSTL - SAT
2 stops20h 31mSpirit Airlines
Deal found 7/25$163
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/88:49 pmSTL - SAT
3 stops26h 27mSpirit Airlines
Deal found 7/25$177
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/612:15 pmSTL - SAT
3 stops25h 27mMultiple Airlines
Deal found 7/25$183
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Tue 8/66:30 amSTL - SAT
2 stops11h 16mUnited Airlines
Deal found 7/25$293
This Delta deal was found by Cheapflights users on 7/26. 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.
Thu 8/296:06 amSTL - SAT
1 stop5h 54mDelta
Deal found 7/26$294

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 2,751,780 searches. Data last updated July 26, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$139 - $263

Route

Depart

Return

Price

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 9/2

1 stop21h 36m

San Antonio

Sat 9/7

1 stop14h 10m

$139

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 9/5

1 stop28h 19m

San Antonio

Sun 9/8

1 stop23h 43m

$153

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 9/20

1 stop11h 34m

San Antonio

Mon 9/23

1 stop11h 20m

$154

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 8/9

1 stop21h 01m

San Antonio

Sun 8/11

1 stop10h 27m

$171

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 9/13

1 stop18h 17m

San Antonio

Sun 9/15

1 stop23h 43m

$178

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Wed 1/1

1 stop6h 31m

San Antonio

Wed 1/8

1 stop6h 09m

$218

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Thu 9/5

3 stops31h 44m

San Antonio

Sun 9/8

2 stops14h 21m

$245

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Fri 8/30

1 stop15h 15m

San Antonio

Mon 9/2

1 stop20h 31m

$260

Lambert-St LouisSan Antonio

STL - SAT

STLSAT

Lambert-St Louis

Mon 8/26

1 stop6h 53m

San Antonio

Sun 9/1

2 stops7h 07m

$263

Flights are sorted by cheapest first

Deals found on 7/26

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 July 25, 2024.
Booking 58 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.
Search Deals

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 July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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.
Search Deals

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.

Temperature and rainfall in San Antonio by month

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

SAT

Temperature

51.8 - 84.2 °F

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 July 26, 2024.
Peruse reviews from past customers who have flown with Frontier, United Airlines and Spirit Airlines 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.
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Alaska Airlines
8.1
Very good
9,364 reviews
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Delta
8.0
Very good
9,615 reviews
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

United Airlines
7.4
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Spirit Airlines
6.4
Okay
8,411 reviews
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

Frontier
6.2
Okay
3,835 reviews
Alaska Airlines
8.1
Very good
9,364 reviews

Food

7.2

Comfort

7.9

Crew

8.6

Entertainment

7.2

Boarding

8.2

Overall

8.1

Reviews

1 / 10

A/C was not working on the ground so it was 110 degrees on the plane when we boarded and we sat there for almost 40 minutes because Austin’s gate system has not kept up with growth. Not Alaska’s fault 100% but it was miserable.

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 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 15m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Lambert-St Louis to San Antonio.

  • 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 Frontier for just $139, but on average you can expect to pay $223.

  • Are there last-minute flights available from St. Louis to San Antonio for under $200?

    There are currently 20+ open flights from St. Louis to San Antonio within the next 7 days for less than $200.

  • 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 $139 on this airline. Additional options worth looking into are Delta and Spirit Airlines, starting at $218 and $245 round-trip. Frontier is currently priced 62% 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 $81. Users have also found prices from $149 and $163 on United Airlines and Spirit Airlines, respectively.

  • What does STL to SAT mean?

    This is defined as Lambert-St Louis Airport (STL) and San Antonio Airport (SAT). Codes like San Antonio Airport are often used to just call airports uniquely.

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

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

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

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

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

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

    The St. Louis to San Antonio flight deals you see on this page were last updated on 7/26.

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

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

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

    Currently, September 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

St. Louis to Dallas/Fort Worth flights
St. Louis to Hobby flights
Kansas City to Dallas/Fort Worth flights
Kansas City to Hobby flights
St. Louis to George Bush Intcntl flights
Kansas City to George Bush Intcntl flights
St. Louis to Austin flights
Springfield to Hobby flights
Springfield to Dallas/Fort Worth flights
St. Louis to Love Field flights
Kansas City to Love Field flights
Kansas City to Austin flights
Springfield to George Bush Intcntl flights
Kansas City to San Antonio flights
St. Louis to McAllen flights
Kansas City to El Paso flights
Springfield to Austin flights
St. Louis to El Paso flights
Springfield to San Antonio flights
Columbia to Dallas/Fort Worth flights
St. Louis to Corpus Christi flights
Joplin to Dallas/Fort Worth flights
St. Louis to Killeen flights
Kansas City to Harlingen flights
Kansas City to Corpus Christi flights
St. Louis to Lubbock flights
Kansas City to Brownsville flights
Columbia to Austin flights
Joplin to Hobby flights
Kansas City to McAllen flights
Kansas City to Lubbock flights
Springfield to Love Field flights
Springfield to McAllen flights
St. Louis to Brownsville flights
Joplin to San Antonio flights
Columbia to Hobby flights
St. Louis to Harlingen flights
St. Louis to Amarillo flights
St. Louis to Longview flights
Columbia to George Bush Intcntl flights
St. Louis to Waco flights
Kansas City to Killeen flights
Joplin to Austin flights
Springfield to El Paso flights
Columbia to San Antonio flights
Branson to Hobby flights

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 2,751,780 searches. Data last updated July 26, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$198FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$161Average$277FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$166Average$450FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$323FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$211Average$386FlexibilityNo cancel feeOn-time71%
New York to Salt Lake City flights
Denver to San Francisco flights
Austin to Hawaii flights
Cincinnati to Miami flights
St. Louis to Los Angeles flights
Orlando to Phoenix flights
Austin to Houston flights
Phoenix to Atlanta flights
USA to Bali flights
New York to London flights
Los Angeles to El Salvador flights
St. Louis to Savannah flights

Search flights from St. Louis to San Antonio by cabin class

Find flights from St. Louis to San Antonio, 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 St. Louis to San Antonio

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 July 26, 2024.
0%of flight departuresEarly morningMidnight to 6 am
50%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
50%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to San Antonio

Explore weekly flight availability from St. Louis to San Antonio. 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 July 26, 2024.
Sunday2daily flights
Monday1daily flight
Tuesday1daily flight
Wednesday1daily flight
Thursday1daily flight
Friday1daily flight
Saturday2daily flights

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Abha
Flights to Komatsu
Flights to Skardu
Flights to Laayoune Hassan I
Flights to Aqaba King Hussein Intl
Flights to Nampula
Flights to Bourgas
Flights to Riverton
Flights to Alpena Phelps/Collins
Flights to Palmas
Flights to Newport State
Flights to Antofagasta Cerro Moreno
Flights to Nuku‘alofa Fua'Amotu Intl
Flights to Ndola
Flights to Fort Dodge
Flights to Miri
Flights to Rhinelander Oneida County
Flights to Seattle Lake Union Spb
Flights to Portsmouth Pease Intl
Flights to Tumbes
Flights to Jigiga
Flights to Diyarbakir
Flights to Akureyri
Flights to Brainerd Crow Wing County
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines