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STL - AUS

Find cheap flights from St. Louis to Austin from $73

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 5/28. 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 5/26
Sun 6/2

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 44,335,567 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
5:35 pm - 8:21 amSTL-AUS
14h 46m1 stop
10:58 pm - 10:09 amAUS-STL
11h 11m1 stop
$117Frontier
Find Deal
Fri, May 10 - Mon, May 13
8:04 pm - 8:16 amSTL-AUS
12h 12m1 stop
8:23 pm - 10:13 amAUS-STL
13h 50m1 stop
$124Frontier
Find Deal
Sat, May 18 - Mon, May 20
5:37 am - 10:58 amSTL-AUS
5h 21m1 stop
6:05 pm - 11:20 pmAUS-STL
5h 15m1 stop
$208American Airlines
Find Deal
Tue, Aug 6 - Sat, Aug 10
5:04 am - 11:22 amSTL-AUS
6h 18m1 stop
6:30 pm - 10:59 pmAUS-STL
4h 29m1 stop
$209American Airlines
Find Deal
Tue, May 21 - Sat, May 25
6:06 am - 11:54 amSTL-AUS
5h 48m1 stop
8:30 am - 4:20 pmAUS-STL
7h 50m1 stop
$218Delta
Find Deal
Wed, Jul 3 - Tue, Jul 9
4:57 pm - 11:05 pmSTL-AUS
6h 08m1 stop
7:48 pm - 3:41 pmAUS-STL
19h 53m2 stops
$346United Airlines
Find Deal
Tue, May 21 - Sat, May 25
10:10 am - 9:23 pmSTL-AUS
11h 13m2 stops
5:50 pm - 10:45 pmAUS-STL
4h 55m1 stop
$442United Airlines
Find Deal
Sat, May 18 - Mon, May 20
11:51 am - 5:01 pmSTL-AUS
5h 10m1 stop
5:30 am - 12:58 pmAUS-STL
7h 28m1 stop
$692Delta
Find Deal
Fri, Aug 30 - Sun, Sep 8
7:32 pm - 3:19 pmSTL-AUS
19h 47m2 stops
6:00 am - 11:59 pmAUS-STL
17h 59m1 stop
$777Alaska Airlines
Find Deal
Wed, Jul 24 - Wed, Jul 31
7:32 pm - 3:19 pmSTL-AUS
19h 47m2 stops
4:19 pm - 1:20 pmAUS-STL
21h 01m2 stops
$807Alaska 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 Friday, as it's usually the priciest day. When flying back from Austin, Saturday 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 July, where tickets cost $224 on average. On the other hand, the most expensive months are May and October, where the average cost of tickets is $371 and $366 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 76 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 $117 on Frontier, followed by Spirit Airlines ($160). One-way flight deals have also been found from as low as $73 on Spirit Airlines and from $85 on Frontier.

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

Each day, there are between 2 and 4 nonstop flights that take off from St. Louis and land in Austin, with an average flight time of 2h 04m. The most common departure time is 2:00 pm and most flights take off in the morning. Each week, there are 21 flights. The most frequent day of departure is Sunday, 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 7:05 am and will be landing in Austin at 9:10 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 8:20 pm and lands at 10:20 pm.

Good to know

Low season

July

High season

March

Cheapest flight

$73
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 4% lower on average.
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 $73 for a one-way ticket and $117 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 $278 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 9115 reviews
7.9comfort
8.2boarding
7.3food
7.3entertainment
8.6crew
Airline reviews

I usually choose Alaska Airlines over any other airline. They try the hardest to make flying a great experience.

10.0 ExcellentAnonymous, Apr 2024SEA - ORD
Read more about Alaska Airlines reviews

I usually choose Alaska Airlines over any other airline. They try the hardest to make flying a great experience.

Staff being friendly would have help since the flight was delayed, again. Folks answered questions but no one seemed happy to be working today and if showed.

It was our baby’s first flight and everything went perfect. The flight attendant gave him his first set of wings and we were smooth flying from there.

Quick easy boarding. Airport was unprepared for early landing and we were waiting in the plane for 20 minutes before getting a gate.

It was a full flight without any issues or stress. Really surprised with how so many flights seem to have issues nowadays.

My flight went off without any hitch or issue. I anticipate issues every time I fly, luckily, I was wrong on this trip.

I was seated at the back of the plane and the flight attendants were fantastic. I did not get food so can’t say. Thought the movie selection was lean.

Flight was good. Glad it was delayed or I may have missed the connection since I got to Seattle at about the same time my connection was to leave. The snack was a small bag of pretzels and a small soda. Can’t really call that food. There was no entertainment available on the flight.

It was much better than expected. Short flight and smaller plane so no entertainment or food.

It was so easy to board using my boarding pass on my iPhone, and I liked what I was given on the plane for food and drink, and everyone was very friendly.

Delta is one of the best airlines I have flown

Made the Atlanta to Pittsburgh trip many times, with Delta no issues

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

I'm a larger, athletic guy (6'2", 260lbs powerlifter) and I found the seats incredibly uncomfortable with minimal leg room, especially in a window seat. Now, I full understand that being smaller may change my view but even if I was 80lbs less, my legs would be the same size and I was sandwiched between my seat and the seat in front of me.

Horrible. This was not first class. This was a connecting flight whi h was late. My original flight never came. I hated the fact that delta gave me a connecting flight from New York to Orlando Florida. No meals and the television screens were not working. There wasn't even any power to charge your phones. This is NOT FIRST CLASS DELTA!!! Do better next time!

This flight was ridiculous. I had to have a connecting flight from New York to orlando Florida??? The flight left late and because it was a short flight there was no first class amenities. I had one alcohol drink. The flight crew was fine, but it sure did not feel like first class. Delta to me dropped the ball by giving me a connecting flight. By the time we got to Raleigh we would have missed the next flight. Lucky for me the flight never came so now I was stuck waiting for a later flight that came in late also.

Our flight was delayed in Atlanta. The staff could have gave us an explanation for the delay and how long it would be.

I liked the ease of checking in, luggage check in, wheel chair assistance, boarding and flight.

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

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

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.

this is starting to seem like an american airlines standard. delayed flights and fake apologies… getting tired of it

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

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

Delayd flight out of atl as always miss my conection in dfw no flight untill next day

No problems with flight. Even though I had a short layover in DFW, I was still able to easily make my connection.

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.

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.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

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.

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.
5/28Tue
1 stopSpirit Airlines
21h 32mSTL-AUS
$73
5/8Wed
1 stopSpirit Airlines
7h 11mSTL-AUS
$82
5/11Sat
1 stopFrontier
26h 02mSTL-AUS
$85
5/25Sat
1 stopFrontier
12h 12mSTL-AUS
$86
5/10Fri
1 stopFrontier
14h 46mSTL-AUS
$89
5/26Sun
1 stopDelta
5h 25mSTL-AUS
$118
9/18Wed
1 stopUnited Airlines
7h 02mSTL-AUS
$264
5/1Wed
2 stopsAmerican Airlines
11h 04mSTL-AUS
$284
6/2Sun
2 stopsAmerican Airlines
6h 39mSTL-AUS
$334
9/18Wed
2 stopsUnited Airlines
8h 46mSTL-AUS
$854

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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.
5/1Wed
multi-stopSpirit Airlines
24h 48mSTL-AUS
5/7Tue
multi-stopSpirit Airlines
17h 57mAUS-STL
$182
5/1Wed
multi-stop
13h 10mSTL-AUS
5/7Tue
multi-stop
17h 57mAUS-STL
$198
4/30Tue
multi-stopFrontier
15h 26mSTL-AUS
5/5Sun
multi-stopFrontier
22h 43mAUS-STL
$227
4/30Tue
multi-stopDelta
5h 27mSTL-AUS
5/1Wed
multi-stopDelta
7h 12mAUS-STL
$425
5/1Wed
multi-stopUnited Airlines
9h 26mSTL-AUS
5/7Tue
multi-stopUnited Airlines
4h 48mAUS-STL
$460
4/30Tue
multi-stopDelta
6h 36mSTL-AUS
5/1Wed
multi-stopDelta
7h 54mAUS-STL
$462
4/30Tue
multi-stopUnited Airlines
9h 26mSTL-AUS
5/1Wed
multi-stopUnited Airlines
4h 48mAUS-STL
$490
4/30Tue
multi-stopAmerican Airlines
6h 50mSTL-AUS
5/5Sun
multi-stopAmerican Airlines
6h 10mAUS-STL
$561
5/1Wed
multi-stopUnited Airlines
9h 26mSTL-AUS
5/7Tue
multi-stopUnited Airlines
7h 31mAUS-STL
$717
4/30Tue
multi-stopUnited Airlines
9h 26mSTL-AUS
5/5Sun
multi-stopUnited Airlines
9h 13mAUS-STL
$1,064

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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:

Compare transportation modes for St. Louis to Austin

Average priceAverage duration
Flights5h 15m
Trains$2160h 00m