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Find cheap flights from St. Louis to San Antonio from $59

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to San Antonio departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 5/19
Sun 5/26

Search hundreds of travel sites at once for deals on flights to San Antonio

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Antonio, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to San Antonio, as well as popular online travel agencies
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to San Antonio (STL-SAT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:01 pm - 9:20 pmSTL-SAT
28h 19m1 stop
9:50 pm - 9:39 pmSAT-STL
23h 49m1 stop
$97Frontier
Find Deal
Thu, May 16 - Mon, May 20
7:16 pm - 1:18 pmSTL-SAT
18h 02m1 stop
8:53 pm - 4:25 pmSAT-STL
19h 32m1 stop
$109Frontier
Find Deal
Tue, May 14 - Fri, May 17
10:10 am - 3:35 pmSTL-SAT
5h 25m1 stop
4:00 pm - 9:34 pmSAT-STL
5h 34m1 stop
$193Delta
Find Deal
Sat, May 11 - Wed, May 15
10:34 am - 12:21 amSTL-SAT
13h 47m1 stop
6:30 pm - 4:25 pmSAT-STL
21h 55m2 stops
$215Spirit Airlines
Find Deal
Tue, May 14 - Fri, May 17
10:34 am - 12:21 amSTL-SAT
13h 47m1 stop
6:30 pm - 4:25 pmSAT-STL
21h 55m2 stops
$217Spirit Airlines
Find Deal
Tue, May 14 - Fri, May 17
5:07 pm - 11:11 pmSTL-SAT
6h 04m1 stop
4:00 pm - 9:34 pmSAT-STL
5h 34m1 stop
$269Delta
Find Deal
Sat, May 11 - Wed, May 15
6:20 pm - 11:08 pmSTL-SAT
4h 48m1 stop
7:27 am - 2:24 pmSAT-STL
6h 57m1 stop
$348American Airlines
Find Deal
Sat, Jul 27 - Sat, Aug 3
10:10 am - 8:48 pmSTL-SAT
10h 38m2 stops
5:20 am - 9:55 amSAT-STL
4h 35m1 stop
$406United Airlines
Find Deal
Wed, May 15 - Wed, May 22
11:10 am - 9:30 pmSTL-SAT
10h 20m2 stops
5:50 pm - 10:13 pmSAT-STL
4h 23m1 stop
$441United Airlines
Find Deal
Wed, Sep 4 - Tue, Sep 10
6:08 pm - 10:54 pmSTL-SAT
4h 46m1 stop
5:00 am - 2:26 pmSAT-STL
9h 26m2 stops
$613American Airlines
Find Deal
Sun, Jun 9 - Thu, Jun 13

Flights from St. Louis to San Antonio - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to San Antonio to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to San Antonio?

The average price of all flights from St. Louis to San Antonio clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to San Antonio on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from St. Louis to San Antonio. For your return ticket, we recommend flying on a Tuesday and avoiding Wednesdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to San Antonio is January, where tickets cost $277 on average. On the other hand, the most expensive months are March and July, where the average cost of tickets is $457 and $399 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to San Antonio, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 47 days before departure.

Which airlines provide the cheapest flights from St. Louis to San Antonio?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to San Antonio found on KAYAK was with Frontier for $59. Frontier proposed a round-trip connection from $97 and Delta from $193.

How many flights are there between St. Louis and San Antonio per day?

Each day, there are between 1 and 2 nonstop flights that take off from St. Louis and land in San Antonio, with an average flight time of 2h 17m. The most common departure time is 4:00 pm and most flights take off in the afternoon. Each week, there are 13 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

What’s the earliest departure time from St. Louis to San Antonio?

Early birds can take the earliest flight from St. Louis at 10:35 am and will be landing in San Antonio at 12:55 pm.

What’s the latest departure time from St. Louis to San Antonio?

If you prefer to fly at night, the latest flight from St. Louis to San Antonio jets off at 7:35 pm and lands at 9:45 pm.

Good to know

Low season

May

High season

December

Cheapest flight

$59
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from St. Louis to San Antonio

When to book flights from St. Louis to San Antonio

Are your dates flexible? Find out the best times to travel from St. Louis to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to San Antonio

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

    In the last 3 days, the lowest price for a flight from St. Louis to San Antonio was $59 for a one-way ticket and $97 for a round-trip.

  • Do I need a passport to fly between St. Louis and San Antonio?

    A passport is not required to fly from St. Louis to San Antonio.

  • Which aircraft models fly most regularly from St. Louis to San Antonio?

    We unfortunately don’t have that data for this specific route.

  • On which days can I fly direct from St. Louis to San Antonio?

    There are nonstop flights from St. Louis to San Antonio on a daily basis.

  • Which is the best airline for flights from St. Louis to San Antonio, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to San Antonio are Delta and United Airlines. With an average price for the route of $309 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $415 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from St. Louis to San Antonio?

Find which airlines fly direct from Lambert-St Louis to San Antonio, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to San Antonio

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Nonstop returns

San Antonio to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11104 reviews
7.9comfort
8.0entertainment
8.2boarding
8.6crew
7.5food
Airline reviews

Everything was great except for the seat. The backrest would not stay in the upright position.

8.0 ExcellentEddie, Apr 2024SEA - PHX
Read more about Delta reviews

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

It was a crowded flight. They did the best they could.

Service was good for such a short flight. Small plane but smooth flight.

Worst flight in my life. Only was scheduled for a 45 min flight to get our connection flight. It was late by 40 minutes and we missed our connection. Delta was totally useless trying to help and unable to get my family on the next flight because they overbooked it Thus had to get a hotel at my expense and lost a day at Disney as a result. Cost me about a $1000 if you add 2 hotels meals shuttles etc to get thru the day Awful customer service by Delta in Detroit totally useless people

The experience was good and the flight departed on time and landed early

The flight was delayed but we got to our final destination.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

The customer service was excellent! Check-in, baggage check-in, boarding, the flight went very smooth.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

It was delayed several hours which delayed our connection in Denver. Not happy.

Ok, but comfort was lacking as the seats were way to small

All good except paid for wifi that did not work

Some of these FA’s need attitude check. Snarky bitches

The plane boarded and deplaned twice before the crew timed out. Flight was 7 hours late departing. Horrible experience!

Got automatically assigned middle seats unless you fork out extra money for a seat assignment, not impressed.

Flight was canceled 12 hours before take-off due to “weather”

American Airlines continues to price it can provide the least comfortable passenger experience in the air. This legacy carrier rivals the budgets for both terrible seats and inadequate amenities. I am a 5’7” woman who is not wider than a coach seat (even on these narrow bodied aircraft). My 3.5 hour flight was terribly uncomfortable because the leg room is inadequate (my knees hit the seat on front of me even when it was not reclined); the seat barely reclines; and the foam padding is worn thin to the extent one can feel the metal supports of the seat. Add to this the fact that the aisle is super narrow, so that the drink cart literally scrapes the arm rest of the aisle seat. It’s basically torture.

Good flights. Departure and arrivals were on time. DFW was a little problematic in that the Skytrain without prior notice bypassed the Echo terminal so that delayed my arrival at my connecting flight.

Late boarding to clean plane from previous flight; initial boarding announcement not loud enough; fantastic cabin attendant front of plane

Delayed flight, few announcements with information, no comps, cluster f boarding because zones weren’t spread out and announced loud and repeatedly, staff did their job -nothing more nothing less, annoying kids were speaking and kicking the heck out of the back of my seat and parents weren’t willing to parent… so another typical day of air travel in the US.,

Gossipy flight attendants talked the whole flight about bar hopping and dating.

Turbulence was bad and flight attendants gossiped about going to the bar and dating. Could have better awareness.

Didn't like the 6 hour delay as it caused me to miss all of my connections. Still, I did get home safely 14 hours late but exhausted.

Flight attendants had no personality! The looked miserable! My seat was broken in first class. I can’t believe how American Airlines changed. 😞

pleased with overall experienced, but seats in coach are tight.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

On time and fast. Overall it was a pleasant experience.

3 hour delay was brutal though not Spirit Airlines fault. the control tower would not let us take off because of weather

Beware of all the extras. Nickel and dimed. Everything was extra. It turns a $90 fare in to a $400 fair quite easily.

It would have been nice to have been on the flight

Delayed several times. Flight was to arrive at midnight and it arrive at 3 am. A 3 hour delay is already bad but one that has you arriving in the wee hour is just disruptive and overall unacceptable. The complete lack of restitution is a joke in keeping with Spirit’s reputation of ranking bottom-low in the pecking order.

It wasn’t as horrible as I would have expected, however, to not provide water and change so much for bags is a ripoff to say the least.

Cancelled my flight , currently stuck in Houston and will likely miss my cruise

The flight attendants were very personable, extremely friendly, and had a very good feeling of the energy around them not to mention they’re very funny and engaging. What made up for the discomfort of the seats and the fact that the plane sat for a long time on the Turmac. Not sure if the pilot was new, but the landing was very rough sort of like I was at a magic mountain theme park ride that was built in 1959

Unfortunately not great, my flight was canceled with no notice given. I attempted to reach out to spirit airlines and have yet to receive any correspondence. I then had to book a new flight at two times the cost of the original.

Good except my suitcase was completely broken when it arrived on belt. Now I have to go through a process to try to get ANY back. Not happy

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Terrible. Seats are bad and the baggage policy is inconsistent

Flight delayed 3 times, resulting in late arrival, rental car place gave car away resulting in increased BS charges because I was late. Frontier blows.

I paid for extra leg room. The flimsy plastic seat underneath the floatation seat did not line up with the arm rests. It seemed as if the plastic part was zip tied on but immovable. This caused severe uncomfortable for the duration of the flight.

Left Denver late, then sat on tarmac 30 min after arrival

Better than I expected but I did pay for a seat and carry on bags ahead of time.

Crew members are very rude and not cooperate with passengers.

30 minute delay due to boarding and settling of a family.

Book cheap flights from St. Louis to San Antonio

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to San Antonio found on KAYAK in the last 72 hours.
5/16Thu
1 stopFrontier
28h 19mSTL-SAT
$59
5/19Sun
1 stopFrontier
9h 01mSTL-SAT
$85
5/25Sat
1 stopSpirit Airlines
7h 05mSTL-SAT
$90
7/1Mon
1 stopAmerican Airlines
8h 13mSTL-SAT
$135
5/25Sat
2 stopsSpirit Airlines
25h 29mSTL-SAT
$136
5/19Sun
2 stopsSpirit Airlines
23h 21mSTL-SAT
$185
5/25Sat
3 stopsSpirit Airlines
25h 29mSTL-SAT
$187
5/19Sun
3 stops
28h 55mSTL-SAT
$199
7/1Mon
3 stops
22h 59mSTL-SAT
$331
5/16Thu
3 stopsUnited Airlines
16h 53mSTL-SAT
$416

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Last minute flights from St. Louis to San Antonio

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to San Antonio that are departing in the next 10 days.
4/24Wed
multi-stopSpirit Airlines
9h 19mSTL-SAT
4/27Sat
multi-stopSpirit Airlines
28h 34mSAT-STL
$393
4/24Wed
multi-stopSpirit Airlines
9h 19mSTL-SAT
4/27Sat
multi-stopSpirit Airlines
11h 47mSAT-STL
$410
4/24Wed
multi-stop
9h 19mSTL-SAT
4/27Sat
multi-stop
25h 19mSAT-STL
$436
4/24Wed
multi-stop
10h 24mSTL-SAT
4/27Sat
multi-stop
25h 19mSAT-STL
$480

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St. Louis - San Antonio Flights

Departure:

St. Louis (STL)United States

Destination:

San Antonio (SAT)United States

Return flight deals:

San Antonio - St. Louis

Cabin classes: