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Cheap flights from San Antonio to St. Louis from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to St. Louis departing on 2/22. 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 San Antonio to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from San Antonio to St. Louis 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 San Antonio to St. Louis.

Cheap last minute flights

Planning a quick getaway from San Antonio to St. Louis? 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 St. Louis, so you can enjoy a seamless trip without layovers.

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

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

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
7:10 pm - 7:12 amSAT-STL
12h 02m1 stop
7:09 pm - 12:02 pmSTL-SAT
16h 53m1 stop
$110Frontier
Find Deal
Sat, Jan 11 - Sat, Jan 18
1:02 pm - 9:06 amSAT-STL
20h 04m1 stop
5:05 pm - 6:09 pmSTL-SAT
25h 04m1 stop
$118Frontier
Find Deal
Thu, Jan 9 - Sun, Jan 12
1:02 pm - 9:16 amSAT-STL
20h 14m1 stop
11:08 pm - 4:58 pmSTL-SAT
17h 50m1 stop
$125Frontier
Find Deal
Fri, Feb 7 - Thu, Feb 13
6:48 am - 10:45 amSAT-STL
3h 57m1 stop
5:03 am - 10:07 amSTL-SAT
5h 04m1 stop
$228American Airlines
Find Deal
Wed, Jan 1 - Tue, Jan 7
9:40 am - 2:37 pmSAT-STL
4h 57m1 stop
9:44 am - 7:22 pmSTL-SAT
9h 38m2 stops
$233United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
7:00 am - 11:47 amSAT-STL
4h 47m1 stop
2:00 pm - 9:54 pmSTL-SAT
7h 54m1 stop
$238Delta
Find Deal
Tue, Jan 21 - Fri, Jan 31
11:59 am - 5:32 pmSAT-STL
5h 33m1 stop
5:27 pm - 9:48 pmSTL-SAT
4h 21m1 stop
$263American Airlines
Find Deal
Fri, Feb 14 - Tue, Feb 18
2:27 pm - 9:45 pmSAT-STL
7h 18m2 stops
11:30 am - 7:22 pmSTL-SAT
7h 52m2 stops
$266United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
11:30 am - 1:35 pmSAT-STL
2h 05mnonstop
9:35 am - 3:40 pmSTL-SAT
6h 05m1 stop
$352Southwest
Find Deal
Fri, Feb 7 - Thu, Feb 13
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
7:55 pm - 10:20 pmSTL-SAT
2h 25mnonstop
$353Southwest
Find Deal
Tue, Feb 11 - Fri, Feb 14
7:55 pm - 11:43 pmSAT-STL
27h 48m1 stop
$61Frontier
Find Deal
Sat, Feb 22
5:58 pm - 5:26 pmSAT-STL
23h 28m1 stop
$65Frontier
Find Deal
Mon, Mar 3
7:00 am - 11:47 amSAT-STL
4h 47m1 stop
$114Delta
Find Deal
Sat, Feb 1
5:30 am - 11:47 amSAT-STL
6h 17m1 stop
$124Delta
Find Deal
Mon, Jan 6
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
$144Southwest
Find Deal
Tue, Feb 4
6:55 pm - 11:59 pmSAT-STL
5h 04m1 stop
$149United Airlines
Find Deal
Wed, Jan 1
7:21 am - 5:36 pmSAT-STL
10h 15m2 stops
$154United Airlines
Find Deal
Sat, Feb 1
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
$163Southwest
Find Deal
Wed, Jan 29
7:37 pm - 3:21 pmSAT-STL
19h 44m1 stop
$203Spirit Airlines
Find Deal
Fri, Dec 13
11:04 am - 3:21 pmSAT-STL
28h 17m3 stops
$213Spirit Airlines
Find Deal
Mon, Dec 9
7:10 pm - 11:24 pmSAT-STL
28h 14m1 stop
5:02 pm - 6:10 pmSTL-SAT
25h 08m1 stop
$261Frontier
Find Deal
Sat, Dec 7 - Thu, Dec 12
7:37 pm - 3:21 pmSAT-STL
19h 44m1 stop
5:02 pm - 6:10 pmSTL-SAT
25h 08m1 stop
Mon, Dec 9 - Thu, Dec 12
7:37 pm - 3:21 pmSAT-STL
19h 44m1 stop
5:02 pm - 6:10 pmSTL-SAT
25h 08m1 stop
Fri, Dec 6 - Sun, Dec 8
6:32 pm - 3:21 pmSAT-STL
20h 49m2 stops
4:26 pm - 10:09 amSTL-SAT
17h 43m2 stops
$559Spirit Airlines
Find Deal
Fri, Dec 6 - Sun, Dec 8
5:15 am - 12:19 pmSAT-STL
7h 04m2 stops
8:30 am - 1:09 pmSTL-SAT
28h 39m1 stop
$845United Airlines
Find Deal
Sat, Dec 7 - Thu, Dec 12
7:18 am - 3:34 pmSAT-STL
8h 16m2 stops
1:39 pm - 1:09 pmSTL-SAT
23h 30m1 stop
$865United Airlines
Find Deal
Mon, Dec 9 - Thu, Dec 12
9:40 am - 11:40 amSAT-STL
2h 00mnonstop
1:00 pm - 6:35 pmSTL-SAT
5h 35m1 stop
$878Southwest
Find Deal
Sat, Dec 7 - Thu, Dec 12
9:40 am - 11:40 amSAT-STL
2h 00mnonstop
11:50 am - 2:10 pmSTL-SAT
2h 20mnonstop
$889Southwest
Find Deal
Sat, Dec 7 - Thu, Dec 12
9:19 am - 1:24 pmSAT-STL
28h 05m2 stops
7:00 am - 8:57 pmSTL-SAT
13h 57m2 stops
$1,302Alaska Airlines
Find Deal
Sat, Dec 7 - Thu, Dec 12
7:00 am - 1:24 pmSAT-STL
30h 24m1 stop
2:20 pm - 4:55 pmSTL-SAT
26h 35m2 stops
$1,417Alaska Airlines
Find Deal
Fri, Dec 6 - Sun, Dec 8
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
7:55 pm - 10:20 pmSTL-SAT
2h 25mnonstop
$353Southwest
Find Deal
Tue, Feb 11 - Fri, Feb 14
12:45 pm - 2:50 pmSAT-STL
2h 05mnonstop
11:15 am - 1:40 pmSTL-SAT
2h 25mnonstop
$363Southwest
Find Deal
Wed, Jan 1 - Tue, Jan 7
12:10 pm - 2:15 pmSAT-STL
2h 05mnonstop
12:30 pm - 2:55 pmSTL-SAT
2h 25mnonstop
$372Southwest
Find Deal
Thu, Jan 9 - Sun, Jan 12
9:45 am - 11:50 amSAT-STL
2h 05mnonstop
7:55 pm - 10:20 pmSTL-SAT
2h 25mnonstop
$418Southwest
Find Deal
Mon, Feb 17 - Mon, Feb 17
12:45 pm - 2:50 pmSAT-STL
2h 05mnonstop
11:50 am - 2:10 pmSTL-SAT
2h 20mnonstop
$588Southwest
Find Deal
Tue, Dec 31 - Mon, Jan 6

Frontier flights from San Antonio to St. Louis

Our best Frontier deals on San Antonio to St. Louis flight tickets
Frontier
Jan 11
SAT7:10 pmSan Antonio
12h 02m
1 stop
STL7:12 amLambert-St Louis
Jan 18
STL7:09 pmLambert-St Louis
16h 53m
1 stop
SAT12:02 pmSan Antonio
Frontier
Jan 9
SAT1:02 pmSan Antonio
20h 04m
1 stop
STL9:06 amLambert-St Louis
Jan 12
STL5:05 pmLambert-St Louis
25h 04m
1 stop
SAT6:09 pmSan Antonio
Frontier
Feb 7
SAT1:02 pmSan Antonio
20h 14m
1 stop
STL9:16 amLambert-St Louis
Feb 13
STL11:08 pmLambert-St Louis
17h 50m
1 stop
SAT4:58 pmSan Antonio

Delta flights from San Antonio to St. Louis

Our best Delta deals on San Antonio to St. Louis flight tickets
Delta
Jan 21
SAT7:00 amSan Antonio
4h 47m
1 stop
STL11:47 amLambert-St Louis
Jan 31
STL2:00 pmLambert-St Louis
7h 54m
1 stop
SAT9:54 pmSan Antonio
Delta
Dec 18
SAT7:10 amSan Antonio
4h 53m
1 stop
STL12:03 pmLambert-St Louis
Dec 31
STL7:15 amLambert-St Louis
8h 15m
1 stop
SAT3:30 pmSan Antonio

See travel insights to St. Louis from

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

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 St. Louis?

In general, September is the cheapest month to fly from San Antonio to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $308. The month of April is another great option to travel to St. Louis, with average flight prices from San Antonio averaging around $318.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Monday when prices can be found for as low as $338. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $386. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from San Antonio in the evening is the least expensive time of day to depart. momondo users have found prices as low as $200 when looking at flights departing in the evening. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $378 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

The best time to book a flight to St. Louis from San Antonio is 54 days out, which is when prices tend to be around $378. In the past 72 hours, momondo users found flights from San Antonio to St. Louis for as low as $134.

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

There are 1 cabin classes available to choose from on San Antonio to Lambert-St Louis 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 San Antonio to St. Louis flights?

You could potentially save up to 57% on your flight if you consider stops on a San Antonio to St. Louis flight.

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

As of December 2024, prices for San Antonio to St. Louis flights are approximately 10% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to St. Louis

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

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

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

Best Price Found

$61

Fastest flight time

2h 00m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from San Antonio in the past 72 hours is $61. The best round-trip flight deal from San Antonio to St. Louis found on momondo in the last 72 hours is $110.
The fastest flight from San Antonio to St. Louis takes 2h 00m
Direct flights go from San Antonio to St. Louis on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

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

    San Antonio and Lambert-St Louis are 792.4 mi apart from one another. By plane, this route typically takes 2h 05m.

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

    Prices for flights from San Antonio Airport to Lambert-St Louis Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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


Best airlines flying from San Antonio to St. Louis

Compare and see reviews for airlines that fly from San Antonio to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $127Free CancellationRating
6.1
3,508 reviews
Search Frontier flights
DeltaPriceFrom $134Free CancellationRating
8.0
8,687 reviews
Search Delta flights
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,137 reviews
Search United Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.1
4,944 reviews
Search Southwest flights
  • Southwest Flights From San Antonio to St. Louis

    Southwest flies from San Antonio to St. Louis around 5 times per week, with 4,944 momondo users rating the airline 8.1/10. The cheapest Southwest deal from San Antonio to St. Louis in the last 72 hours was $291 (round-trip), much lower than the average airfare cost of $461 for Southwest flights on this route.


Why use momondo?

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

It is quick and easy to find San Antonio to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from San Antonio with this policy.

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

Once all potential San Antonio to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for San Antonio to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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