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STL - AUS

$75 Find cheap flights from St. Louis to Austin

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 Austin departing on 7/16. 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
Fri 7/12
Fri 7/19

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Austin, 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 Austin, as well as popular online travel agencies
In the last 7 days travelers have searched 44,148,666 times on KAYAK, and here is why:

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Cheap flight deals from St. Louis to Austin (STL-AUS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Austin 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
8:00 pm - 8:14 amSTL-AUS
12h 14m1 stop
9:14 am - 9:37 amAUS-STL
24h 23m1 stop
$148Frontier
Find Deal
Sat, Aug 17 - Tue, Aug 20
8:00 pm - 8:14 amSTL-AUS
12h 14m1 stop
7:18 pm - 10:18 amAUS-STL
15h 00m1 stop
$150Frontier
Find Deal
Fri, Aug 16 - Mon, Aug 19
5:46 pm - 12:20 amSTL-AUS
6h 34m1 stop
5:00 am - 9:29 amAUS-STL
4h 29m1 stop
$162American Airlines
Find Deal
Tue, Jul 16 - Sat, Jul 20
10:04 am - 3:47 pmSTL-AUS
5h 43m1 stop
6:33 am - 11:38 amAUS-STL
5h 05m1 stop
$176Delta
Find Deal
Wed, Aug 14 - Wed, Aug 21
5:26 pm - 12:36 amSTL-AUS
7h 10m1 stop
10:40 am - 4:20 pmAUS-STL
5h 40m1 stop
$213Delta
Find Deal
Sun, Aug 18 - Thu, Aug 22
8:01 am - 12:42 pmSTL-AUS
4h 41m1 stop
6:40 pm - 10:52 pmAUS-STL
4h 12m1 stop
$233American Airlines
Find Deal
Mon, Jul 1 - Mon, Jul 8
3:43 pm - 10:56 pmSTL-AUS
7h 13m2 stops
6:08 pm - 10:17 pmAUS-STL
4h 09m1 stop
$369United Airlines
Find Deal
Sat, Jul 13 - Tue, Jul 16
8:58 am - 3:21 pmSTL-AUS
6h 23m1 stop
4:23 pm - 8:28 pmAUS-STL
4h 05m1 stop
$388United Airlines
Find Deal
Thu, Jun 27 - Mon, Jul 1
7:32 pm - 3:19 pmSTL-AUS
19h 47m2 stops
7:15 am - 11:59 pmAUS-STL
16h 44m2 stops
$716Alaska Airlines
Find Deal
Thu, Jul 11 - Tue, Jul 16
7:32 pm - 3:19 pmSTL-AUS
19h 47m2 stops
7:59 pm - 11:59 pmAUS-STL
28h 00m2 stops
$775Alaska Airlines
Find Deal
Wed, Jul 24 - Wed, Jul 31

Flights from St. Louis to Austin - Travel Insights & Trends

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

The average price of all flights from St. Louis to Austin clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from St. Louis to Austin, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Austin, Tuesday is the cheapest day to fly and Monday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Austin, 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 Austin is January, where tickets cost $238 on average. On the other hand, the most expensive months are April and March, where the average cost of tickets is $344 and $335 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Austin, 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 Austin, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 29 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from St. Louis to Austin found by KAYAK users in the last 72 hours was for $148 on Frontier, followed by American Airlines ($162). One-way flight deals have also been found from as low as $75 on Frontier and from $79 on American Airlines.

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

Each day, there are between 2 and 5 nonstop flights that take off from St. Louis and land in Austin, with an average flight time of 1h 58m. The most common departure time is 7:00 pm and most flights take off in the morning. Each week, there are 27 flights. The most frequent day of departure is Wednesday, when 19% of all weekly flights depart. The fewest flights depart on a Saturday.

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

Early birds can take the earliest flight from St. Louis at 7:40 am and will be landing in Austin at 9:40 am.

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

If you prefer to fly at night, the latest flight from St. Louis to Austin jets off at 9:00 pm and lands at 10:55 pm.

Good to know

Low season

January

High season

March

Cheapest flight

$75
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Austin

When to book flights from St. Louis to Austin

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

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

    In the last 3 days, the lowest price for a flight from St. Louis to Austin was $75 for a one-way ticket and $148 for a round-trip.

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

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

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Austin?

    Only American Airlines offers inflight Wi-Fi service on the St. Louis to Austin flight route.

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

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the St. Louis to Austin flight route.

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

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

  • Which is the best airline for flights from St. Louis to Austin, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Austin are Delta and Alaska Airlines. With an average price for the route of $248 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $279 and an overall rating of 8.0.

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

    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 Austin.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin 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 Austin?

    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 Austin with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and AUS 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 Austin?

    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 Austin 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 Austin?

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

Nonstop departures

Lambert-St Louis to Austin Bergstrom

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

Austin Bergstrom 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 Austin

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Austin. 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 Austin? 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
Alaska AirlinesOverall score based on 9269 reviews
7.3Entertainment
7.3Food
8.2Boarding
8.6Crew
7.9Comfort
Airline reviews

First class only upgrades seat width. The bottom cushion of the seat sloped forward so much that I was constantly sliding out of my seat. The meal was awful, granola and dried fruit? Seriously, for what I paid to upgrade? I can bring my own sawdust and rotten fruit for a whole lot less. Priority boarding is great except when you have a hundred economy passengers stranding in the aisle slamming you in the face with their enormous carry ons and smelly asses right under your nose. I want my money back for that leg of my trip. It wasn’t worth the money for such a minimal upgrade.

4.0 OkayAnonymous, Jun 2024MKE - SEA
Read more about Alaska Airlines reviews

First class only upgrades seat width. The bottom cushion of the seat sloped forward so much that I was constantly sliding out of my seat. The meal was awful, granola and dried fruit? Seriously, for what I paid to upgrade? I can bring my own sawdust and rotten fruit for a whole lot less. Priority boarding is great except when you have a hundred economy passengers stranding in the aisle slamming you in the face with their enormous carry ons and smelly asses right under your nose. I want my money back for that leg of my trip. It wasn’t worth the money for such a minimal upgrade.

I had never flown Alaska Airlines before. I’ll definitely use them again. Seats were comfortable and roomier than expected.

Seats lack shoulder and elbow room. The lady next to me was short and slightly heavy with knee problems, she kept jabbing me with her elbow while playing her game on her phone for 2 hours, the duration of the whole flight. It was frustrating and annoying! I was in the middle seat, there was no space to adjust to avoid her arm jabbing me.

I was in second from last seat. My luggage was in row 15. I asked the stewardess if I could move up before the plane lands. There were 3 empty rows. She went on to explain to me, how no one was sitting there when the plane took off and there was no education on the exit doors. Blah, blah, blah. I said ok, S he kept over explaining to me. So whatever if that’s the rules. She went in the back to the other 2 stewards to tell them the entire conversation I just had with her. Not only could I hear her so could all the back rows of the plane. This was very unprofessional and inappropriate.

Soda cans were mini-size; snacks were teeny. Options for entertainment on trans-continent flights were bad - no seat screens and no way to support device (as seen on other airlines) so had to hold device in position. Just overall, not good (compared to United)

I like the big picture of the Eskimo on the tail of the plane.

The crew members were wonderful. When we encountered a little turbulence, the pilots let us know and provided an estimate of how long it would last. Another nice amenity: every seat has AC power outlets and USB ports. It was a 6-hour flight, which seems a bit much for a single-aisle jet: over 200 passengers with access to only 3 restrooms (assuming you time it right and won't be blocked in by beverage carts); food is mediocre, over-priced, and (if you failed to reserve a meal ahead of time) the flight attendants have to process food/meal sales in the aisle. To access any entertainment, you must use your own device to log on to the plane's wi-fi (or bring your own entertainment).

The crews on Alaska Airlines are really wonderful. They clearly know how to treat passengers with kindness and respect. During my trip, I discovered that my upgraded seat had been changed when reviewing my electronic boarding pass. When I questioned the change at the gate, the two staff members acknowledged that the change was odd, checked on their computer, and confirmed that I still had my upgraded seat (i.e., the electronic boarding pass was incorrect). I was impressed by how they seemed to be "in my corner" from the start, quickly investigated, and provided me with a paper boarding pass with the correct information "just in case." All that said, I was a bit disappointed that Alaska Airlines uses single-aisle jets with only four restrooms (3 at the back of the plane, one at the front (ostensibly reserved for crew and first class travelers). I would understand for short flights, but for a 6-hour flight from Seattle to Honolulu...really? I will stick with Hawaiian Airlines from now on.

Seats are more spacious than other airlines that have you packed like sardines.

Barbara at JFK terminal for Alaska was very helpful in retrieving our boarding passes for our connecting and quite pleasant!! Thanks

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

Flew first class so everything was great. But maybe because the flights were red eye, no meals were served, just chips. I flew Alaska Air 1st class at 9PM (2 hour flight) and they served beef short rib sliders!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

Boarding was unorganized. They expected passengers to ask people to move their assigned seat they paid for in order to sit together. The seats even in comfort are smaller than other airlines and the flight attendants appeared not to be well prepared

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

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

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

They cancelled two flight and got us onto another airline, which was also delayed.

Nothing, terrible travel experience due to weather and maintenance delays and was left stranded in Austin.

28 hour delay at Fort Worth/Dallas airport, part due to weather which was unavoidable, but various other reasons - no pilot, no fa, mechanical problem, plane too small, too big, crew out of flying time, seat configuration problems.... endless and hourly updates with a different excuse. Finally told us about 3.00 am, that the flight was delayed to hours later.

Delayed so that missed connecting flight. Connecting flight was also delayed on the tarmac but they closed the gate before the rescheduled time.

Took off over an hour late with multiple mechanical issues. Gate agent in Dallas was lazy and was slow as molasses. Had a line 10 people long. Spirit bad..

LIT to DFW - 3 hours late; the entire plane had been boarded before they told us there was a delay due to a weather-related ground stop in Dallas. DFW to MAY - 2+ hours late due to A/C needing to be repaired after everyone had boarded, then when we finally reach the runway, the First Officer timed out and we had to taxi all the way back to the gate and wait for a new one. I arrived in New Orleans 5+ hours later than I should have. Return flights were completely cancelled; rebooked through the app to fly through CLT instead of DFW. MSY to CLT had no issues, but CLT to LIT was delayed 1.25 hrs because flight attendants had not arrived to the airport yet. At least they didn’t make us all sit on the plane to wait for them. I should have driven.

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

Even though we left CMI late, we mostly made up the time.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Did not realize seats did not recline. Best to travel in an exit row... No question

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

Book cheap flights from St. Louis to Austin

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Austin found on KAYAK in the last 72 hours.
7/16Tue
1 stopFrontier
16h 26mSTL-AUS
$75
8/31Sat
1 stopAmerican Airlines
5h 15mSTL-AUS
$79
7/23Tue
1 stopAmerican Airlines
3h 48mSTL-AUS
$81
7/15Mon
1 stopFrontier
12h 22mSTL-AUS
$82
7/27Sat
1 stopFrontier
19h 49mSTL-AUS
$103
7/18Thu
1 stopFrontier
11h 16mSTL-AUS
$105
6/30Sun
1 stopSpirit Airlines
15h 17mSTL-AUS
$115
7/16Tue
2 stopsSpirit Airlines
21h 44mSTL-AUS
$120
8/31Sat
2 stopsUnited Airlines
11h 18mSTL-AUS
$189
9/1Sun
2 stopsUnited Airlines
11h 18mSTL-AUS
$232

Search by stops

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Last minute flights from St. Louis to Austin

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 Austin that are departing in the next 10 days.
6/14Fri
multi-stopAmerican Airlines
4h 31mSTL-AUS
6/14Fri
multi-stopAmerican Airlines
6h 05mAUS-STL
$310
6/15Sat
multi-stopAmerican Airlines
5h 13mSTL-AUS
6/16Sun
multi-stopAmerican Airlines
3h 54mAUS-STL
$330
6/13Thu
multi-stopFrontier
26h 22mSTL-AUS
6/17Mon
multi-stopFrontier
11h 56mAUS-STL
$335
6/14Fri
multi-stopFrontier
14h 39mSTL-AUS
6/17Mon
multi-stopFrontier
11h 56mAUS-STL
$376
6/16Sun
multi-stop
15h 17mSTL-AUS
6/23Sun
multi-stop
13h 30mAUS-STL
$406
6/15Sat
multi-stopUnited Airlines
9h 12mSTL-AUS
6/16Sun
multi-stopUnited Airlines
6h 06mAUS-STL
$415
6/16Sun
multi-stop
15h 17mSTL-AUS
6/23Sun
multi-stop
25h 38mAUS-STL
$427
6/14Fri
multi-stopUnited Airlines
4h 59mSTL-AUS
6/16Sun
multi-stopUnited Airlines
10h 26mAUS-STL
$547
6/14Fri
multi-stopAlaska Airlines
23h 42mSTL-AUS
6/17Mon
multi-stopAlaska Airlines
28h 00mAUS-STL
$1,169
6/14Fri
multi-stopAlaska Airlines
23h 42mSTL-AUS
6/16Sun
multi-stopAlaska Airlines
27h 33mAUS-STL
$1,579

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St. Louis - Austin Flights

Departure:

St. Louis (STL)United States

Destination:

Austin (AUS)United States

Return flight deals:

Austin - St. Louis

Cabin classes:

$399

Browse destinations: