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STL - AUS

Find cheap flights from St. Louis to Austin from $81

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 5/15. 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 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 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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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
7:29 pm - 6:28 pmSTL-AUS
22h 59m1 stop
7:18 pm - 10:18 amAUS-STL
15h 00m1 stop
$165Frontier
Find Deal
Fri, Sep 27 - Sun, Sep 29
7:29 pm - 6:28 pmSTL-AUS
22h 59m1 stop
9:14 am - 2:53 pmAUS-STL
5h 39m1 stop
$166Frontier
Find Deal
Fri, Aug 16 - Sun, Aug 18
3:27 pm - 10:20 pmSTL-AUS
6h 53m1 stop
5:59 pm - 11:54 pmAUS-STL
5h 55m1 stop
$203American Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10
6:11 am - 11:36 amSTL-AUS
5h 25m1 stop
2:32 pm - 8:37 pmAUS-STL
6h 05m1 stop
$206Delta
Find Deal
Tue, Jun 4 - Wed, Jun 12
5:07 pm - 10:50 pmSTL-AUS
5h 43m1 stop
5:36 am - 11:48 amAUS-STL
6h 12m1 stop
$221Delta
Find Deal
Sat, Jun 1 - Wed, Jun 5
5:37 am - 10:58 amSTL-AUS
5h 21m1 stop
4:10 pm - 11:20 pmAUS-STL
7h 10m1 stop
$233American Airlines
Find Deal
Sat, Sep 28 - Sat, Sep 28
6:15 am - 11:38 amSTL-AUS
5h 23m1 stop
6:03 pm - 10:15 pmAUS-STL
4h 12m1 stop
$302United Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 5
6:15 am - 11:38 amSTL-AUS
5h 23m1 stop
6:03 pm - 10:15 pmAUS-STL
4h 12m1 stop
$368United Airlines
Find Deal
Tue, May 28 - Tue, May 28
2:36 pm - 3:54 pmSTL-AUS
25h 18m2 stops
6:12 pm - 11:59 pmAUS-STL
29h 47m1 stop
$532Alaska Airlines
Find Deal
Mon, Jun 3 - Fri, Jun 7
7:00 am - 10:38 pmSTL-AUS
15h 38m2 stops
4:19 pm - 1:20 pmAUS-STL
21h 01m2 stops
$612Alaska Airlines
Find Deal
Wed, Jun 12 - Sat, Jun 15

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, 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 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 28 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 $165 on Frontier, followed by Spirit Airlines ($169). One-way flight deals have also been found from as low as $81 on Frontier and from $113 on Spirit Airlines.

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

Each day, there are between 4 and 7 nonstop flights that take off from St. Louis and land in Austin, with an average flight time of 2h 01m. The most common departure time is 2:00 pm and most flights take off in the morning. Each week, there are 41 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

How long does a flight from St. Louis to Austin take?

The duration of a nonstop flight to Austin from St. Louis is typically 1h 55m. The journey crosses a distance of 722 miles.

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 9:00 pm and lands at 10:55 pm.

Good to know

Low season

May

High season

March

Cheapest flight

$81
Best time to beat the crowds with an average 7% 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 $81 for a one-way ticket and $165 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 $276 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 9141 reviews
7.9Comfort
7.3Food
8.2Boarding
7.3Entertainment
8.6Crew
Airline reviews

Ashley - the flight attendant from OMA to SEA - was phenomenal. I was traveling alone with my 4 month old and she made every accommodation possible and went out of her way to make sure my experience was as comfortable as possible. Give this woman a massive raise!

10.0 ExcellentAdam, May 2024OMA - SEA
Read more about Alaska Airlines reviews

Ashley - the flight attendant from OMA to SEA - was phenomenal. I was traveling alone with my 4 month old and she made every accommodation possible and went out of her way to make sure my experience was as comfortable as possible. Give this woman a massive raise!

No tv, movies for a 6 hour flight! Worst airline I have ever travelled!

boarding was easy and the 737 Max was comfortable and roomy but that was the only good.. there was a child screaming at the top of his lungs for the entire loading, taxiing and part of the flight and no one in the crew said anything or offered any assistance.

Delayed an hour and sat without updates. Ended up an hour late to destination

It was great; it was on time, everything went smoothly, the crew was excellent. It was just uncomfortable for the usual reasons; completely full fight, could barely move because the space was so small. The expected stuff with every airline.

The flight was decent again if there was a place that you could put crying children that would be great. Or maybe make a rule against allowing infants on the plane.

The flight was great. The pilot was great. It was really annoying that the staff had facemasks on. Hard to hear what they’re saying when a mask is covering their mouth. I enjoyed the flight, but there was a crying baby in front of me. You guys should offer flights baby free. I would be very into that me and the person next to me discussed how they should make free flights for all of us that don’t have kids. I wouldn’t mind paying extra to not have to deal with the smell of a dirty diaper or screaming of a child. Also, if they had a separate room, the babies could be sent to the back with a curtain or something muddle the horrible sounds.

Smooth. Courteous. Fun. One problem: the wheels on my checked roller back were broken when I picked up baggage at destination. Must have happened during flight baggage handling but I don’t know where.

Staff very helpful and friendly, in flight entertainment poor. Flight left late and thus arrived 20 minutes late to final destination.

Ground crew was great in Austin, flight crew left a lot to be desired. Not particularly friendly, helpful or nice.

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.

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

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

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.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

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.

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 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.
5/15Wed
1 stopFrontier
12h 12mSTL-AUS
$81
5/21Tue
1 stopFrontier
20h 04mSTL-AUS
$99
6/2Sun
1 stopSpirit Airlines
13h 47mSTL-AUS
$113
7/6Sat
1 stopAmerican Airlines
5h 57mSTL-AUS
$125
5/21Tue
2 stopsSpirit Airlines
17h 31mSTL-AUS
$126
5/17Fri
1 stopSpirit Airlines
17h 49mSTL-AUS
$133
5/23Thu
nonstopSouthwest
2h 05mSTL-AUS
$163
5/23Thu
1 stopSouthwest
4h 30mSTL-AUS
$185
5/15Wed
2 stopsAmerican Airlines
11h 07mSTL-AUS
$285
10/3Thu
1 stopUnited Airlines
4h 54mSTL-AUS
$401

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.
5/11Sat
multi-stopFrontier
14h 00mSTL-AUS
5/16Thu
multi-stopFrontier
11h 56mAUS-STL
$253
5/11Sat
multi-stopFrontier
14h 00mSTL-AUS
5/14Tue
multi-stopFrontier
17h 52mAUS-STL
$255
5/10Fri
multi-stopDelta
5h 19mSTL-AUS
5/16Thu
multi-stopDelta
6h 43mAUS-STL
$395
5/12Sun
multi-stopDelta
5h 19mSTL-AUS
5/13Mon
multi-stopDelta
6h 39mAUS-STL
$472
5/11Sat
multi-stopUnited Airlines
6h 28mSTL-AUS
5/11Sat
multi-stopUnited Airlines
4h 55mAUS-STL
$542
5/11Sat
multi-stopSpirit Airlines
20h 27mSTL-AUS
5/16Thu
multi-stopSpirit Airlines
6h 31mAUS-STL
$564
5/11Sat
multi-stopSpirit Airlines
20h 27mSTL-AUS
5/14Tue
multi-stopSpirit Airlines
24h 49mAUS-STL
$649
5/10Fri
multi-stopAmerican Airlines
5h 10mSTL-AUS
5/10Fri
multi-stopAmerican Airlines
6h 05mAUS-STL
$701
5/10Fri
multi-stopAmerican Airlines
6h 08mSTL-AUS
5/12Sun
multi-stopAmerican Airlines
10h 02mAUS-STL
$710
5/10Fri
multi-stopUnited Airlines
6h 08mSTL-AUS
5/14Tue
multi-stopUnited Airlines
6h 23mAUS-STL
$802

Search by stops

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Search by price

St. Louis - Austin Flights

Departure:

St. Louis (undefined)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 21m
Trains$2650h 00m
Buses$17621h 50m