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SAT - STL

$81 Find cheap flights from San Antonio to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to St. Louis departing on 5/15. 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
Sat 6/8
Sat 6/15

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Antonio to St. Louis, 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 San Antonio to St. Louis, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to St. Louis 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
12:50 pm - 8:10 pmSAT-STL
7h 20m1 stop
11:36 am - 11:43 pmSTL-SAT
12h 07m1 stop
Wed, May 22 - Wed, May 29
8:34 pm - 7:07 amSAT-STL
10h 33m1 stop
8:02 pm - 7:08 pmSTL-SAT
23h 06m1 stop
$148Frontier
Find Deal
Wed, Jun 5 - Wed, Jun 12
10:34 pm - 2:32 pmSAT-STL
15h 58m1 stop
8:02 pm - 9:57 pmSTL-SAT
25h 55m1 stop
$153Frontier
Find Deal
Wed, Jun 12 - Sat, Jun 15
11:26 am - 6:40 pmSAT-STL
7h 14m1 stop
5:15 pm - 12:21 amSTL-SAT
7h 06m1 stop
$164Spirit Airlines
Find Deal
Thu, May 30 - Sat, Jun 1
6:40 pm - 10:18 amSAT-STL
15h 38m1 stop
7:29 pm - 5:44 pmSTL-SAT
22h 15m1 stop
$198Frontier
Find Deal
Sat, Aug 17 - Thu, Aug 22
7:06 pm - 7:07 amSAT-STL
12h 01m1 stop
8:16 am - 7:34 pmSTL-SAT
11h 18m1 stop
$210Frontier
Find Deal
Mon, Jun 24 - Wed, Jun 26
8:29 pm - 5:28 pmSAT-STL
20h 59m2 stops
1:55 pm - 8:50 pmSTL-SAT
6h 55m1 stop
$238Spirit Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 12
4:48 pm - 12:28 pmSAT-STL
19h 40m3 stops
5:15 pm - 12:21 amSTL-SAT
7h 06m1 stop
Thu, May 30 - Sat, Jun 1
7:30 am - 5:03 pmSAT-STL
9h 33m2 stops
6:15 am - 11:05 amSTL-SAT
4h 50m1 stop
$461United Airlines
Find Deal
Sat, Aug 17 - Thu, Aug 22
7:20 am - 4:30 pmSAT-STL
9h 10m2 stops
6:15 am - 11:00 amSTL-SAT
4h 45m1 stop
$599United Airlines
Find Deal
Thu, Oct 10 - Sun, Oct 13

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

Get data-powered insights and trends into flights from San Antonio to St. Louis 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 San Antonio to St. Louis?

The average price of all flights from San Antonio to St. Louis clicked on KAYAK for each day over the last 12 months.
When flying from San Antonio to St. Louis, you should consider leaving on a Tuesday and avoid Wednesdays if you are looking for the best rates. For your return to San Antonio, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Antonio to St. Louis, 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 San Antonio to St. Louis is April, where tickets cost $334 on average. On the other hand, the most expensive months are August and March, where the average cost of tickets is $633 and $501 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Antonio to St. Louis, 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 San Antonio to St. Louis, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 32 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $81. KAYAK users also found San Antonio to St. Louis round-trip flights on Frontier from $148 and on Spirit Airlines from $164.

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

Each day, there are between 2 and 5 nonstop flights that take off from San Antonio and land in St. Louis, with an average flight time of 2h 05m. The most common departure time is 5:00 am and most flights take off in the afternoon. Each week, there are 27 flights. The most frequent day of departure is Tuesday, when 19% of all weekly flights depart. The fewest flights depart on a Saturday.

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

Early birds can take the earliest flight from San Antonio at 5:00 am and will be landing in St. Louis at 7:05 am.

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

If you prefer to fly at night, the latest flight from San Antonio to St. Louis jets off at 5:45 pm and lands at 7:50 pm.

Good to know

Low season

August

High season

October

Cheapest flight

$81
Best time to beat the crowds but there is an average 48% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from San Antonio to St. Louis

When to book flights from San Antonio to St. Louis

Are your dates flexible? Find out the best times to travel from San Antonio to St. Louis 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 San Antonio to St. Louis

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

    In the last 3 days, the lowest price for a flight from San Antonio to St. Louis was $81 for a one-way ticket and $118 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from San Antonio to St. Louis?

    San Antonio airport is called San Antonio and the only airport in St. Louis is Lambert-St Louis.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Antonio to St. Louis are United Airlines and American Airlines. With an average price for the route of $482 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $409 and an overall rating of 7.3.

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

    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 San Antonio to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from San Antonio 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 San Antonio to St. Louis?

    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 St. Louis with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and STL 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 San Antonio to St. Louis?

    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 St. Louis from San Antonio 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 San Antonio to St. Louis?

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 4 airlines serving from San Antonio to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from San Antonio to St. Louis. 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 San Antonio to St. Louis? 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 10789 reviews
8.0Entertainment
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

There was a group of school age passengers that were very loud and unruly with their chaperones were no where to be found.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

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

I liked everything about the flight. The service was excellent!

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

Delayed a day due to snow storm. Was upgraded. That kind of made up for significant delays from FLL to COS with no compensation or acknowledgement.

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Missed the flight because of them and up geting a rental car

Flight was fine. It took an unusually long time to have baggage delivered to the carousel in ORD.

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Flight from SBP to DFW 1. They rerouted us through PHX 2. Delayed flight out of SBP for 3 hrs so we missed our connection Downgrade on rerouted flight. Back of the plane, center seats, didn't sit together 4. Return flight out of DFW same exact thing. Delayed, missed connection, Downgrade + they lost our luggage! A complete mess.

Do not eat the bagel! Otherwise, good albeit late, breakfast in first. Boarding downgrade only because flight was delayed due to plane change due to undisclosed problem with original aircraft. I did not use entertainment.

Was as expected. Good leg room on planes - much appreciated.

Fight crew was not very attentive and the bastions were gross!

I checked a bag because it was $5 less than carry on. They managed to lose my bag on a 2.5 hr direct flight! Frontier has no airport staff at baggage claim to help. As soon as I got home around 11 pm I tried to use their online system to file the claim for lost bag - system wouldn't take the # on my baggage claim ticket - said it was not the correct number. Also said that I had not checked a bag, which wasn't true - even my online boarding pass showed that I had checked a bag. Wasted about an hour on that process with no luck. Tried again in the morning - same thing. So tried online chat with Frontier bot - waited 35-40" twice to be connected to a baggage agent and it never happened. Eventually drove to PDX after work and waited 2 hrs for the Frontier ticket agents to arrive prior to the next Frontier flight out of PDX and FINALLY got some help from one of them, to take me to lost luggage area where I was able to retrive my bag. Probably took 4-5 hrs. of my time and endless frustration to get my bag. This was my first -- and LAST -- experience flying Frontier Airlines. Check-in was also extremely difficult and time consuming. The flight itself (and staff) were fine but everything else about the experience was a total disaster! The fact that Frontier literally has NO WAY to connect to a human voice for customer service (in this case for lost luggage) is the WORST!!!!!

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Book cheap flights from San Antonio to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Antonio to St. Louis found on KAYAK in the last 72 hours.
5/15Wed
1 stopFrontier
12h 19mSAT-STL
$81
5/18Sat
1 stopFrontier
20h 22mSAT-STL
$85
6/10Mon
1 stopSpirit Airlines
14h 29mSAT-STL
$86
6/26Wed
1 stopFrontier
10h 33mSAT-STL
$106
5/23Thu
1 stopSpirit Airlines
7h 14mSAT-STL
$121
7/7Sun
1 stopAmerican Airlines
4h 24mSAT-STL
$180
5/18Sat
3 stops
41h 00mSAT-STL
$247
5/23Thu
3 stops
24h 39mSAT-STL
$248
5/16Thu
2 stopsUnited Airlines
26h 44mSAT-STL
$414
5/16Thu
3 stopsUnited Airlines
15h 23mSAT-STL
$594

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Last minute flights from San Antonio to St. Louis

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 San Antonio to St. Louis that are departing in the next 10 days.
5/14Tue
multi-stopSpirit Airlines
14h 05mSAT-STL
5/22Wed
multi-stopSpirit Airlines
12h 07mSTL-SAT
$277
5/14Tue
multi-stop
41h 52mSAT-STL
5/22Wed
multi-stop
12h 07mSTL-SAT
$415
5/11Sat
multi-stopDelta
8h 07mSAT-STL
5/14Tue
multi-stopDelta
8h 02mSTL-SAT
$546
5/14Tue
multi-stopSpirit Airlines
14h 05mSAT-STL
5/22Wed
multi-stopSpirit Airlines
23h 00mSTL-SAT
$574
5/11Sat
multi-stopUnited Airlines
4h 58mSAT-STL
5/14Tue
multi-stopUnited Airlines
10h 38mSTL-SAT
$586
5/11Sat
multi-stopDelta
6h 40mSAT-STL
5/14Tue
multi-stopDelta
5h 57mSTL-SAT
$598
5/11Sat
multi-stopUnited Airlines
6h 38mSAT-STL
5/14Tue
multi-stopUnited Airlines
10h 38mSTL-SAT
$603
5/14Tue
multi-stop
36h 37mSAT-STL
5/22Wed
multi-stop
34h 06mSTL-SAT
$639
5/11Sat
multi-stopUnited Airlines
9h 44mSAT-STL
5/13Mon
multi-stopUnited Airlines
7h 11mSTL-SAT
$856
5/11Sat
multi-stopAlaska Airlines
26h 19mSAT-STL
5/13Mon
multi-stopAlaska Airlines
18h 36mSTL-SAT
$1,612

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San Antonio - St. Louis Flights

Departure:

San Antonio (undefined)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - San Antonio

Cabin classes: