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Cheap flights from Austin to St. Louis from $96

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 5/20. 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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Find the cheapest flights from Austin to St. Louis

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Austin to St. Louis.
Frontier Logo
10:32 am - 12:06 amAUS-STL
13h 34m1 stop
Frontier Logo
8:15 pm - 12:05 pmSTL-AUS
15h 50m1 stop
$191Frontier
Find Deal
lun., may. 5 - mié., may. 7
Southwest Logo
6:20 am - 8:25 amAUS-STL
2h 05mnonstop
Southwest Logo
5:20 pm - 7:25 pmSTL-AUS
2h 05mnonstop
$199Southwest
Find Deal
mié., may. 21 - mié., may. 28
Delta Logo
12:03 pm - 4:35 pmAUS-STL
4h 32m1 stop
Delta Logo
3:40 pm - 9:14 pmSTL-AUS
5h 34m1 stop
$219Delta
Find Deal
mié., may. 21 - mié., may. 28
 Logo
6:00 am - 10:09 amAUS-STL
28h 09m1 stop
 Logo
10:10 am - 11:03 pmSTL-AUS
12h 53m1 stop
vie., may. 23 - dom., may. 25
United Airlines Logo
11:39 am - 3:49 pmAUS-STL
4h 10m1 stop
United Airlines Logo
4:50 pm - 10:45 pmSTL-AUS
5h 55m1 stop
$245United Airlines
Find Deal
sáb., may. 17 - lun., may. 19
Spirit Airlines Logo
7:14 am - 9:15 amAUS-STL
26h 01m1 stop
Spirit Airlines Logo
10:10 am - 11:03 pmSTL-AUS
12h 53m1 stop
$259Spirit Airlines
Find Deal
mié., may. 7 - sáb., may. 10
Delta Logo
1:29 pm - 9:34 pmAUS-STL
8h 05m1 stop
Delta Logo
10:48 am - 5:13 pmSTL-AUS
6h 25m1 stop
$262Delta
Find Deal
mar., jun. 24 - vie., jun. 27
United Airlines Logo
11:17 am - 4:53 pmAUS-STL
5h 36m1 stop
United Airlines Logo
5:55 pm - 11:04 pmSTL-AUS
5h 09m1 stop
$267United Airlines
Find Deal
jue., jun. 12 - dom., jun. 15
 Logo
6:00 am - 10:09 amAUS-STL
28h 09m1 stop
 Logo
10:10 am - 11:03 pmSTL-AUS
12h 53m1 stop
vie., may. 23 - dom., may. 25
Spirit Airlines Logo
7:14 am - 9:15 amAUS-STL
26h 01m1 stop
Spirit Airlines Logo
10:10 am - 1:10 pmSTL-AUS
27h 00m2 stops
$289Spirit Airlines
Find Deal
mié., may. 7 - sáb., may. 10

Frontier flights from Austin to St. Louis

Our best Frontier deals on Austin to St. Louis flight tickets
Frontier
Apr 29
AUS6:00 amAustin Bergstrom
28h 01m
1 stop
STL10:01 amLambert-St Louis
Apr 30
STL5:41 pmLambert-St Louis
25h 44m
1 stop
AUS7:25 pmAustin Bergstrom
Frontier
May 5
AUS10:32 amAustin Bergstrom
13h 34m
1 stop
STL12:06 amLambert-St Louis
May 7
STL8:15 pmLambert-St Louis
15h 50m
1 stop
AUS12:05 pmAustin Bergstrom
Frontier
Apr 24
AUS6:00 amAustin Bergstrom
28h 01m
1 stop
STL10:01 amLambert-St Louis
Apr 30
STL6:58 pmLambert-St Louis
28h 22m
1 stop
AUS11:20 pmAustin Bergstrom

United Airlines flights from Austin to St. Louis

Our best United Airlines deals on Austin to St. Louis flight tickets
United Airlines
May 17
AUS11:39 amAustin Bergstrom
4h 10m
1 stop
STL3:49 pmLambert-St Louis
May 19
STL4:50 pmLambert-St Louis
5h 55m
1 stop
AUS10:45 pmAustin Bergstrom
United Airlines
Jun 12
AUS11:17 amAustin Bergstrom
5h 36m
1 stop
STL4:53 pmLambert-St Louis
Jun 15
STL5:55 pmLambert-St Louis
5h 09m
1 stop
AUS11:04 pmAustin Bergstrom
United Airlines
May 21
AUS5:05 amAustin Bergstrom
9h 42m
2 stops
STL2:47 pmLambert-St Louis
May 28
STL8:10 amLambert-St Louis
7h 12m
2 stops
AUS3:22 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, July 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 $299. The month of August is another great option to travel to St. Louis, with average flight prices from Austin averaging around $300.

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 $322. 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 $475. 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. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $420 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 17 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $328 when searching 17 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 $223 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 April 2025, prices for Austin to St. Louis flights are approximately 31% 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

$96

Fastest flight time

2h 05m

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 $96. The best round-trip flight deal from Austin to St. Louis found on momondo in the last 72 hours is $191.
The fastest flight from Austin to St. Louis takes 2h 05m
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 05m 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 $136Free CancellationRating
5.9
3,283 reviews
Search Frontier flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
DeltaPriceFrom $198Free CancellationRating
8.0
7,920 reviews
Search Delta flights
American AirlinesPriceFrom $198Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $235Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
  • Southwest Flights From Austin to St. Louis

    Southwest flight deals from Austin to St. Louis start from $235 round-trip. Over the 18 Southwest flights for this route in a normal week, average airfare is usually $331 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
Florissant
Maryland Heights
Hermann
Fairview Heights
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Wentzville
Alton
Glencoe
Eureka
Edwardsville
Festus
Clayton
Grafton
Litchfield

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
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lun. 4/28
lun. 5/5

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