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Cheap flights from St. Louis to San Antonio from $75

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Antonio departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to San Antonio

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to San Antonio that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to San Antonio.

Cheap last minute flights

Planning a quick getaway from St. Louis to San Antonio? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to San Antonio, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to San Antonio

Find recent round-trip train or bus tickets from St. Louis to San Antonio.

All round-trip flight deals to San Antonio

The cheapest plane tickets to San Antonio found on KAYAK recently.
5:05 pm - 6:15 pmSTL-SAT
25h 10m1 stop
7:15 pm - 11:31 pmSAT-STL
28h 16m1 stop
$128Frontier
Find Deal
Fri, Jan 17 - Mon, Jan 20
5:05 pm - 6:15 pmSTL-SAT
25h 10m1 stop
1:02 pm - 9:16 amSAT-STL
20h 14m1 stop
$138Frontier
Find Deal
Fri, Jan 17 - Sun, Jan 19
11:55 am - 8:34 pmSTL-SAT
8h 39m1 stop
12:33 pm - 4:33 pmSAT-STL
4h 00m1 stop
$218American Airlines
Find Deal
Tue, Feb 18 - Sat, Feb 22
9:15 am - 1:35 pmSTL-SAT
4h 20m1 stop
12:33 pm - 4:33 pmSAT-STL
4h 00m1 stop
$223American Airlines
Find Deal
Wed, Feb 26 - Sat, Mar 1
6:30 am - 3:42 pmSTL-SAT
9h 12m2 stops
5:48 pm - 10:20 pmSAT-STL
4h 32m1 stop
$243United Airlines
Find Deal
Tue, Feb 4 - Sun, Feb 9
4:00 pm - 12:01 amSTL-SAT
8h 01m1 stop
8:00 am - 3:58 pmSAT-STL
7h 58m1 stop
$248Delta
Find Deal
Mon, Apr 14 - Fri, Apr 18
4:36 pm - 9:18 pmSTL-SAT
4h 42m1 stop
5:30 am - 2:14 pmSAT-STL
8h 44m2 stops
$253United Airlines
Find Deal
Fri, Jan 17 - Sun, Jan 19
10:20 am - 6:15 pmSTL-SAT
7h 55m1 stop
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
$296Southwest
Find Deal
Tue, Feb 4 - Sun, Feb 9
11:15 am - 1:40 pmSTL-SAT
2h 25mnonstop
7:20 am - 12:40 pmSAT-STL
5h 20m1 stop
$330Southwest
Find Deal
Wed, Feb 5 - Sun, Feb 9
5:34 pm - 12:55 amSTL-SAT
7h 21m1 stop
12:27 pm - 5:59 pmSAT-STL
5h 32m1 stop
$638Delta
Find Deal
Mon, Dec 2 - Fri, Dec 6
6:53 pm - 1:18 pmSTL-SAT
18h 25m1 stop
$75Frontier
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Fri, Feb 21
6:46 pm - 11:56 amSTL-SAT
17h 10m1 stop
$85Frontier
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Wed, Dec 11
1:40 pm - 7:41 pmSTL-SAT
6h 01m1 stop
$109American Airlines
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Mon, Jan 20
3:26 pm - 11:59 pmSTL-SAT
8h 33m1 stop
$114Delta
Find Deal
Wed, Dec 18
6:04 pm - 11:56 pmSTL-SAT
5h 52m1 stop
$124Delta
Find Deal
Thu, Dec 19
5:59 pm - 11:00 pmSTL-SAT
5h 01m1 stop
$149United Airlines
Find Deal
Sat, Dec 21
12:41 pm - 11:14 pmSTL-SAT
10h 33m2 stops
$154United Airlines
Find Deal
Sat, Jan 18
10:25 am - 12:50 pmSTL-SAT
2h 25mnonstop
$172Southwest
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Fri, Feb 21
11:15 am - 1:40 pmSTL-SAT
2h 25mnonstop
$179Southwest
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Tue, Jan 21
7:08 am - 1:44 pmSTL-SAT
6h 36m1 stop
$239American Airlines
Find Deal
Fri, Dec 6
5:38 pm - 3:10 pmSTL-SAT
21h 32m1 stop
8:06 pm - 4:26 pmSAT-STL
20h 20m1 stop
Fri, Nov 22 - Sat, Nov 30
11:20 am - 11:10 pmSTL-SAT
11h 50m2 stops
6:56 pm - 11:30 pmSAT-STL
4h 34m1 stop
$882United Airlines
Find Deal
Fri, Nov 22 - Sat, Nov 30
5:00 pm - 1:01 amSTL-SAT
32h 01m3 stops
6:25 am - 4:25 pmSAT-STL
34h 00m3 stops
Fri, Nov 22 - Sat, Nov 30
4:54 pm - 9:18 pmSTL-SAT
4h 24m1 stop
12:08 pm - 4:38 pmSAT-STL
4h 30m1 stop
$1,016United Airlines
Find Deal
Fri, Nov 22 - Mon, Nov 25
4:54 pm - 9:18 pmSTL-SAT
4h 24m1 stop
12:08 pm - 4:38 pmSAT-STL
4h 30m1 stop
$1,360United Airlines
Find Deal
Fri, Nov 22 - Mon, Nov 25
11:51 am - 5:30 amSTL-SAT
17h 39m2 stops
5:00 am - 11:59 pmSAT-STL
18h 59m2 stops
$1,617Alaska Airlines
Find Deal
Fri, Nov 22 - Sat, Nov 30
11:15 am - 1:40 pmSTL-SAT
2h 25mnonstop
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
$331Southwest
Find Deal
Tue, Feb 4 - Sun, Feb 9
11:15 am - 1:40 pmSTL-SAT
2h 25mnonstop
5:05 pm - 7:10 pmSAT-STL
2h 05mnonstop
$344Southwest
Find Deal
Sun, Feb 9 - Sun, Feb 16
12:30 pm - 2:55 pmSTL-SAT
2h 25mnonstop
11:30 am - 1:35 pmSAT-STL
2h 05mnonstop
$388Southwest
Find Deal
Mon, Jan 20 - Sun, Jan 26
11:50 am - 2:10 pmSTL-SAT
2h 20mnonstop
12:45 pm - 2:50 pmSAT-STL
2h 05mnonstop
$393Southwest
Find Deal
Tue, Dec 17 - Tue, Dec 24
10:50 pm - 1:15 amSTL-SAT
2h 25mnonstop
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
$398Southwest
Find Deal
Thu, Dec 26 - Wed, Jan 29
2:10 pm - 4:30 pmSTL-SAT
2h 20mnonstop
5:00 am - 7:05 amSAT-STL
2h 05mnonstop
$408Southwest
Find Deal
Thu, Dec 19 - Thu, Dec 26
7:55 pm - 10:20 pmSTL-SAT
2h 25mnonstop
9:45 am - 11:50 amSAT-STL
2h 05mnonstop
$418Southwest
Find Deal
Fri, Feb 14 - Mon, Feb 17
10:50 pm - 1:15 amSTL-SAT
2h 25mnonstop
12:45 pm - 2:50 pmSAT-STL
2h 05mnonstop
$423Southwest
Find Deal
Mon, Dec 23 - Wed, Jan 1
10:50 pm - 1:15 amSTL-SAT
2h 25mnonstop
5:00 am - 7:05 amSAT-STL
2h 05mnonstop
$439Southwest
Find Deal
Fri, Dec 20 - Sun, Dec 29
11:50 am - 2:10 pmSTL-SAT
2h 20mnonstop
5:00 am - 7:05 amSAT-STL
2h 05mnonstop
$441Southwest
Find Deal
Mon, Dec 16 - Mon, Dec 30

Frontier flights from St. Louis to San Antonio

Our best Frontier deals on St. Louis to San Antonio flight tickets
Frontier
Jan 17
STL5:05 pmLambert-St Louis
25h 10m
1 stop
SAT6:15 pmSan Antonio
Jan 20
SAT7:15 pmSan Antonio
28h 16m
1 stop
STL11:31 pmLambert-St Louis
Frontier
Jan 17
STL5:05 pmLambert-St Louis
25h 10m
1 stop
SAT6:15 pmSan Antonio
Jan 19
SAT1:02 pmSan Antonio
20h 14m
1 stop
STL9:16 amLambert-St Louis
Frontier
Dec 13
STL5:02 pmLambert-St Louis
25h 08m
1 stop
SAT6:10 pmSan Antonio
Dec 17
SAT10:27 pmSan Antonio
9h 46m
1 stop
STL8:13 amLambert-St Louis

American Airlines flights from St. Louis to San Antonio

Our best American Airlines deals on St. Louis to San Antonio flight tickets
American Airlines
Feb 18
STL11:55 amLambert-St Louis
8h 39m
1 stop
SAT8:34 pmSan Antonio
Feb 22
SAT12:33 pmSan Antonio
4h 00m
1 stop
STL4:33 pmLambert-St Louis
American Airlines
Feb 26
STL9:15 amLambert-St Louis
4h 20m
1 stop
SAT1:35 pmSan Antonio
Mar 1
SAT12:33 pmSan Antonio
4h 00m
1 stop
STL4:33 pmLambert-St Louis
American Airlines
Jan 4
STL7:04 amLambert-St Louis
4h 36m
1 stop
SAT11:40 amSan Antonio
Jan 11
SAT9:10 amSan Antonio
3h 50m
1 stop
STL1:00 pmLambert-St Louis

See travel insights to San Antonio from

How to get the cheapest flight ticket from St. Louis to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of August, then book flights to San Antonio from St. Louis during September instead. Flights to San Antonio in September, while not as cheap as those in August, still average around $328.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Wednesday when prices can be found for as low as $317. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Friday is $406.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the morning. momondo users have found flights departing from St. Louis to San Antonio in the morning for as low as $349. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly at noon, with an average ticket price of $378. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to San Antonio flight route?

Fly from Lambert-St Louis to San Antonio for the best Lambert-St Louis - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

In general, most travelers find the cheapest time to book a flight to San Antonio is about 29 days prior to their departure date when tickets on average are $361. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from St. Louis for as low as $224 on momondo.

What cabin class options are available on Lambert-St Louis to San Antonio flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to San Antonio flights?

You could potentially save up to 62% on your flight if you consider stops on a St. Louis to San Antonio flight.

How have St. Louis to San Antonio flight prices changed over time?

As of November 2024, prices for St. Louis to San Antonio flights are approximately 94% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to San Antonio (STL to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to San Antonio

Best Price Found

$75

Fastest flight time

2h 15m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from St. Louis in the past 72 hours is $75. The best round-trip flight deal from St. Louis to San Antonio found on momondo in the last 72 hours is $128.
The fastest flight from St. Louis to San Antonio takes 2h 15m
Direct flights go from St. Louis to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)

  • How far is Lambert-St Louis to San Antonio by plane?

    There are 792.4 mi between Lambert-St Louis and San Antonio. 2h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to San Antonio Airport?

    Prices for flights from Lambert-St Louis Airport to San Antonio Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to San Antonio Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to San Antonio Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The travel and health documents you'll need for your trip to San Antonio Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Antonio Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to San Antonio?

  • What is the most popular airline from St. Louis to San Antonio?


Best airlines flying from St. Louis to San Antonio

Compare and see reviews for airlines that fly from St. Louis to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $128Free CancellationRating
6.1
3,536 reviews
Search Frontier flights
United AirlinesPriceFrom $218Free CancellationRating
7.4
9,172 reviews
Search United Airlines flights
American AirlinesPriceFrom $221Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $238Free CancellationRating
8.0
8,755 reviews
Search Delta flights
SouthwestPriceFrom $322Free CancellationRating
8.1
5,005 reviews
Search Southwest flights
  • Southwest Flights From St. Louis to San Antonio

    The lowest priced Southwest flight from St. Louis to San Antonio from the last 72 hours was $322. Generally, Southwest has 4 flights on this route every week with an average price of $407. Southwest is rated 8.1/10 by our users.


Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to San Antonio?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Antonio from St. Louis.

Can I find flights from St. Louis to San Antonio with flexible booking policies on momondo?

Flights from St. Louis to San Antonio with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to San Antonio?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Antonio from St. Louis.

I’m not ready to book a flight from St. Louis to San Antonio right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to San Antonio flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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