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Cheap flights from Austin to St. Louis from $76

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to St. Louis departing on 10/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Southwest Logo
3:00 pm - 5:10 pmAUS-STL
2h 10mnonstop
Southwest Logo
9:40 pm - 11:40 pmSTL-AUS
2h 00mnonstop
$151Southwest
Find Deal
Sat, Aug 23 - Thu, Aug 28
Southwest Logo
3:00 pm - 5:10 pmAUS-STL
2h 10mnonstop
Southwest Logo
5:10 am - 9:40 amSTL-AUS
4h 30m1 stop
$156Southwest
Find Deal
Sat, Aug 23 - Thu, Aug 28
American Airlines Logo
5:53 pm - 11:55 pmAUS-STL
6h 02m1 stop
American Airlines Logo
5:15 am - 9:28 amSTL-AUS
4h 13m1 stop
$159American Airlines
Find Deal
Sat, Aug 23 - Thu, Aug 28
American Airlines Logo
12:25 pm - 4:46 pmAUS-STL
4h 21m1 stop
American Airlines Logo
9:23 am - 1:43 pmSTL-AUS
4h 20m1 stop
$160American Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
Delta Logo
6:09 pm - 11:22 pmAUS-STL
5h 13m1 stop
Delta Logo
5:30 pm - 10:38 pmSTL-AUS
5h 08m1 stop
$197Delta
Find Deal
Fri, Aug 15 - Wed, Aug 20
United Airlines Logo
7:05 am - 2:27 pmAUS-STL
7h 22m2 stops
United Airlines Logo
8:25 am - 1:08 pmSTL-AUS
4h 43m1 stop
$202United Airlines
Find Deal
Sat, Sep 27 - Mon, Sep 29
Delta Logo
8:00 am - 2:37 pmAUS-STL
6h 37m1 stop
Delta Logo
1:26 pm - 6:54 pmSTL-AUS
5h 28m1 stop
$207Delta
Find Deal
Thu, Sep 4 - Wed, Sep 10
Frontier Logo
7:00 am - 9:11 amAUS-STL
26h 11m1 stop
Frontier Logo
7:29 pm - 11:44 pmSTL-AUS
28h 15m1 stop
$248Frontier
Find Deal
Tue, Jul 22 - Wed, Jul 23
United Airlines Logo
5:30 am - 10:01 amAUS-STL
4h 31m1 stop
United Airlines Logo
4:40 pm - 11:58 pmSTL-AUS
7h 18m1 stop
$256United Airlines
Find Deal
Fri, Aug 22 - Fri, Aug 22
Frontier Logo
7:00 am - 9:11 amAUS-STL
26h 11m1 stop
Frontier Logo
7:29 pm - 11:44 pmSTL-AUS
28h 15m1 stop
$261Frontier
Find Deal
Tue, Jul 22 - Wed, Jul 30

Spirit Airlines flights from Austin to St. Louis

Our best Spirit Airlines deals on Austin to St. Louis flight tickets
Spirit Airlines
Jul 29
AUS7:30 amAustin Bergstrom
9h 01m
1 stop
STL4:31 pmLambert-St Louis
Aug 2
STL10:45 amLambert-St Louis
25h 38m
2 stops
AUS12:23 pmAustin Bergstrom
Spirit Airlines
Oct 16
AUS8:25 amAustin Bergstrom
23h 24m
2 stops
STL7:49 amLambert-St Louis
Oct 20
STL8:44 amLambert-St Louis
6h 52m
1 stop
AUS3:36 pmAustin Bergstrom
Spirit Airlines
Jul 31
AUS7:30 amAustin Bergstrom
9h 01m
1 stop
STL4:31 pmLambert-St Louis
Aug 3
STL10:47 amLambert-St Louis
26h 05m
1 stop
AUS12:52 pmAustin Bergstrom

Delta flights from Austin to St. Louis

Our best Delta deals on Austin to St. Louis flight tickets
Delta
Aug 15
AUS6:09 pmAustin Bergstrom
5h 13m
1 stop
STL11:22 pmLambert-St Louis
Aug 20
STL5:30 pmLambert-St Louis
5h 08m
1 stop
AUS10:38 pmAustin Bergstrom
Delta
Sep 4
AUS8:00 amAustin Bergstrom
6h 37m
1 stop
STL2:37 pmLambert-St Louis
Sep 10
STL1:26 pmLambert-St Louis
5h 28m
1 stop
AUS6:54 pmAustin Bergstrom
Delta
Oct 14
AUS5:40 amAustin Bergstrom
6h 45m
1 stop
STL12:25 pmLambert-St Louis
Oct 18
STL7:20 amLambert-St Louis
6h 31m
1 stop
AUS1:51 pmAustin Bergstrom

See travel insights to St. Louis from

How to get the cheapest flight ticket from Austin to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, August is the cheapest month to fly from Austin to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. The month of July is another great option to travel to St. Louis, with average flight prices from Austin averaging around $301.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $301. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $468. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Austin in the evening is the least expensive time of day to depart. momondo users have found prices as low as $238 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $392 per ticket.

What is the cheapest Austin Bergstrom to Lambert-St Louis flight route?

Fly from Austin Bergstrom to Lambert-St Louis for the best Austin Bergstrom - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $327 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Austin for as low as $216 on momondo.

What cabin class options are available on Austin Bergstrom to Lambert-St Louis flights?

There are 1 cabin classes available to choose from on Austin Bergstrom to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Austin to St. Louis flight prices changed over time?

As of July 2025, prices for Austin to St. Louis flights are approximately 40% more expensive when compared to flights at the same time last year.

When to book flights from Austin to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Austin to St. Louis (AUS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to St. Louis

Best Price Found

$76

Fastest flight time

2h 00m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Austin in the past 72 hours is $76. The best round-trip flight deal from Austin to St. Louis found on momondo in the last 72 hours is $151.
The fastest flight from Austin to St. Louis takes 2h 00m
Direct flights go from Austin to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Austin Bergstrom to Lambert-St Louis by plane?

    The distance between Austin Bergstrom and Lambert-St Louis is about 718.3 mi. Typically, this will take 2h 00m by plane in normal conditions.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to Lambert-St Louis Airport?

    Prices for flights from Austin Bergstrom Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Austin Bergstrom Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Austin Bergstrom Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Austin to St. Louis?

  • What is the most popular airline from Austin to St. Louis?


Best airlines flying from Austin to St. Louis

Compare and see reviews for airlines that fly from Austin to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $139Free CancellationRating
5.9
3,273 reviews
Search Frontier flights
DeltaPriceFrom $145Free CancellationRating
8.0
7,958 reviews
Search Delta flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
8,844 reviews
Search United Airlines flights
American AirlinesPriceFrom $216Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $223Free CancellationRating
8.0
4,256 reviews
Search Southwest flights
  • Southwest Flights From Austin to St. Louis

    Southwest flight deals from Austin to St. Louis start from $223 round-trip. Over the 15 Southwest flights for this route in a normal week, average airfare is usually $326 round-trip - but some users have found much cheaper deals with momondo.


Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Alton
Wentzville
Glencoe
Festus
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Austin to St. Louis?

Finding the right flight to St. Louis from Austin is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Austin to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Austin with this policy.

How can momondo help me find flights from Austin to St. Louis?

momondo provides multiple filters to help you find the best flight to St. Louis from Austin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Austin to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Austin to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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1 adult
Sun 7/13
Sun 7/20

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