AUS - STL

$62 Find Cheap Flights from Austin to St. Louis - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Austin to St. Louis departing on 10/7. 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
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$143
Typical prices: $246-$359
Frontier
Fri 10/23Mon 10/26
AUS - STL • 1 stop
Cheapest non-stop
$180
Typical prices: $249-$403
Southwest
Tue 10/6Tue 10/13
AUS - STL • Non-stop
Nonstop flights
You can fly direct with Southwest. Average duration is 2h 05m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $207 (round-trip)
Shortest trip • 3h 35m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 38% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
Good to know
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Flight Deals
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Austin 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Austin to St. Louis

Fri, Oct 23 - Mon, Oct 26
Frontier Logo
12:08 pm - 5:40 pmAUS  Austin Bergstrom-STL Lambert-St Louis
5h 32m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:35 pm - 9:53 amSTL  Lambert-St Louis-AUS Austin Bergstrom
15h 18m1 stop Atlanta Hartsfield-Jackson
$143Frontier
Thu, Sep 10 - Mon, Sep 14
Frontier Logo
6:33 pm - 1:10 pmAUS  Austin Bergstrom-STL Lambert-St Louis
18h 37m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
2:29 pm - 5:48 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
27h 19m1 stop Atlanta Hartsfield-Jackson
$148Frontier
Tue, Sep 15 - Tue, Sep 15
Southwest Logo
12:55 pm - 4:25 pmAUS  Austin Bergstrom-STL Lambert-St Louis
3h 30m1 stop Dallas Love Field
Southwest Logo
8:50 pm - 10:55 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
2h 05mnonstop
$179Southwest
Tue, Oct 6 - Tue, Oct 13
Southwest Logo
7:30 am - 9:35 amAUS  Austin Bergstrom-STL Lambert-St Louis
2h 05mnonstop
Southwest Logo
2:25 pm - 4:30 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
2h 05mnonstop
$180Southwest
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
6:38 pm - 12:27 amAUS  Austin Bergstrom-STL Lambert-St Louis
5h 49m1 stop Chicago O'Hare Intl
American Airlines Logo
5:43 am - 10:44 amSTL  Lambert-St Louis-AUS Austin Bergstrom
5h 01m1 stop Dallas/Fort Worth
$187American Airlines
Tue, Sep 8 - Wed, Sep 9
American Airlines Logo
6:47 pm - 12:14 amAUS  Austin Bergstrom-STL Lambert-St Louis
5h 27m1 stop Chicago O'Hare Intl
American Airlines Logo
8:30 am - 1:28 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
4h 58m1 stop Dallas/Fort Worth
$187American Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
5:30 am - 10:10 amAUS  Austin Bergstrom-STL Lambert-St Louis
4h 40m1 stop Houston George Bush Intcntl
United Airlines Logo
3:32 pm - 11:14 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
7h 42m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$192United Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
9:33 am - 2:15 pmAUS  Austin Bergstrom-STL Lambert-St Louis
4h 42m1 stop Houston George Bush Intcntl
United Airlines Logo
8:00 am - 3:26 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
7h 26m2 stops Chicago O'Hare Intl Houston George Bush Intcntl
$231United Airlines
Tue, Dec 22 - Wed, Jan 6
Delta Logo
6:15 pm - 11:39 pmAUS  Austin Bergstrom-STL Lambert-St Louis
5h 24m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:59 pm - 12:32 amSTL  Lambert-St Louis-AUS Austin Bergstrom
5h 33m1 stop Atlanta Hartsfield-Jackson
$233Delta
Tue, Dec 22 - Wed, Jan 6
Delta Logo
6:45 am - 12:57 pmAUS  Austin Bergstrom-STL Lambert-St Louis
6h 12m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:00 am - 12:46 pmSTL  Lambert-St Louis-AUS Austin Bergstrom
6h 46m1 stop Atlanta Hartsfield-Jackson
$233Delta
Booking Insights

KAYAK's insights & trends for Austin to St. Louis flights

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

How much is a round-trip flight from Austin to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Austin to St. Louis departing in October.

Flight prices are below average for this route right now.

Flights to St. Louis from Austin usually cost between $291 and $367 in October.
The lowest price found in the past 5 days was $143 on Frontier (Oct 23-Oct 26).

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

The average price of all round-trip flights from Austin to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Austin to St. Louis, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from St. Louis, Saturday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Austin 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 Austin to St. Louis is October, where tickets cost $279 (return) on average. On the other hand, the most expensive months are July and March, where the average cost of round-trip tickets is $392 and $381 respectively.

Can I save money by flying with a layover from Austin to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $367 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Austin to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Austin to St. Louis, you should book around 4 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Austin to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Harriet Baskas

Harriet Baskas

Expert on AUS

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Good to know

Low season

October

Cheapest flight

$62
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Austin to St. Louis

When to book flights from Austin to St. Louis

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

  • What are the best hours to arrive at AUS?

    The peak departure travel hours range from 5 am to 11 am and 3:30 pm to 5:30 pm. Don't book your flight from Austin to St. Louis during these peak hours to avoid encountering longer waits at AUS security checkpoints.

  • What are the alternative airports in Saint Louis?

    You can try Marion Williamson County Airport located in Marion or choose Springfield Capital Airport in Springfield. Both airports are located near STL. However, you may opt for the least expensive journey on this route by typically booking flights from AUS to STL in advance other than using nearby airports.

  • Where will I find car rental services at STL?

    Find car rental desks at the main terminal on your way out. There are up to seven car rental agencies at STL and they include Enterprise, Avis, Alamo, Budget, Hertz, Thrifty, and National. All companies offer shuttle services between the passenger drop-off location and the main airport terminal where you can pick up your ride.

  • Where can I find facilities for nursing mothers at STL?

    The three Lactation Suites are located post-security of every concourse next to gates A-10, C-9, and E-33. All suites feature sinks, spacious counters power outlets, full-back club chairs with adjustable arm tables, and seats for other traveling companions. Plus, each Lactation Suite is ADA-compliant. Gain access to these facilities by texting a number shared on digital signage at each location to receive a text indicating a door code.

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

    In the last 5 days, the lowest price for a flight from Austin to St. Louis was $62 for a one-way ticket and $143 for a round-trip.

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

    No, a passport isn't needed to fly from Austin to St. Louis. However, local authorities might ask for an official ID.

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

    Austin airport is called Austin Bergstrom and the only airport in St. Louis is Lambert-St Louis.

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

    Delta, American Airlines, and JetBlue offer inflight Wi-Fi service on the Austin to St. Louis flight route.

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

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

  • Which airline alliances offer flights from Austin to St. Louis?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Austin and St. Louis, with SkyTeam being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from Austin to St. Louis are Southwest and Delta. With an average price for the route of $352 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $248 and an overall rating of 7.8.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Austin 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 Austin 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 Austin with another airline. Booking your flights between Austin 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 Austin 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 Austin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Austin to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $284 or less one-way and $300 or less round-trip.
  • Typically, flights from Austin to St. Louis depart from Austin Bergstrom International Airport (AUS) and arrive at Lambert-Saint Louis International Airport (STL). Dubbed AUS, Austin Bergstrom is located approximately 5 miles southeast of downtown Austin, Texas. AUS is a hub for Allegiant Air and it serves several popular airlines on this route that include American Airlines, Spirit Airlines, and Alaska Airlines. The airport features two passenger terminals; South Terminal and Barbara Jordan Terminal.
  • Make sure to arrive at AUS at least two hours before your scheduled flight departure. Usually, the current wait time at AUS is around 25 minutes on average and this is the time it will take you to go through all the security checkpoints which are located in both terminals.
  • Alternatives to AUS include Austin Executive Airport, Bud Dryden Airport, Breakaway Airport, Georgetown Municipal Airport, and Elgin Intracontinental Airport. All of these are considered smaller airports compared to AUS, where most passenger flights to various destinations happen.
  • If you are traveling through AUS without checked luggage, you can save your time by skipping the airline ticket counters and proceeding to security screening checkpoints. Use the upper curbside and lower curbside for drop-off through elevators and escalators at the Lower Level. You may also take advantage of the self-service flight check-in kiosks inside the terminal to save your boarding time.
  • Choose the most convenient transportation means from Lambert-Saint Louis International Airport (STL) to downtown St. Louis. Remember, STL is about 15 miles from the St. Louis city center, so using a taxi or a bus should be a cheaper option. Ride Share Services, Shuttle Service, Limousine, services, and MetroLink are additional transportation means and you can find them just outside the passenger terminal.

Prefer to fly direct from Austin to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Austin Bergstrom to Lambert-St Louis.
Find which airlines fly direct from Austin Bergstrom Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Austin Bergstrom to Lambert-St Louis

Monday

Southwest

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Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

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Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to Austin Bergstrom

Monday

Southwest

Southwest

Tuesday

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Southwest

Wednesday

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Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

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Sunday

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See more direct flights

Everything you need to know for your flight from Austin to St. Louis

Information on your arrival and departure airports