Which layover airport offers the lowest fares from Austin to St. Louis?

Flights via Dallas (DFW) offer the lowest average round-trip price of $260.

Which airport is the most popular layover for flights between Austin and St. Louis?

Dallas (DFW) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Austin to St. Louis on average per week?

As of September 2025, 14 flights take off from Austin and land in St. Louis each week. The most common flight departure day for this route is Sun, with 29% of weekly flights taking off on this day.

What is the cheapest airline that flies from Austin Bergstrom to Lambert-St Louis?

Southwest, United Airlines, and American Airlines are the most popular carriers operating from Austin Bergstrom to Lambert-St Louis

Which layover airport has the shortest connection time from Austin to St. Louis?

Houston (HOU) has the shortest average layover time for this route: 0h 40m.

How many flights depart from Austin to St. Louis on average per day?

As of September 2025, there are 2 flights per day flying from Austin to St. Louis. The most common time of day flights depart is 5:00AM, with 71% of flights taking off in the afternoon.

What airlines fly to St. Louis?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from Austin according to our data. Southwest is the first choice among our users, with 56% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Austin to St. Louis?

Flights connecting via Houston (HOU) have the shortest average one-way travel time: 3h 40m.

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?

The number of operators available for flights from Austin Bergstrom Airport to Lambert-St Louis Airport is 4 as of September 2025.

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.

$69 Cheap Flights from Austin to St. Louis in 2025/26

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Find the cheapest flights from Austin to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:00 am - 8:05 amAUS-STL

2h 05mnonstop

10:15 am - 12:20 pmSTL-AUS

2h 05mnonstop

$137Southwest

Find Deal

Tue, Oct 14 - Tue, Oct 21

5:10 pm - 10:00 pmAUS-STL

4h 50m1 stop

10:15 am - 12:20 pmSTL-AUS

2h 05mnonstop

$147Southwest

Find Deal

Tue, Oct 14 - Tue, Oct 21

5:15 am - 9:52 amAUS-STL

4h 37m1 stop

11:06 am - 3:20 pmSTL-AUS

4h 14m1 stop

$151United Airlines

Find Deal

Sun, Oct 19 - Wed, Oct 22

4:48 pm - 9:07 amAUS-STL

16h 19m1 stop

7:52 pm - 12:32 amSTL-AUS

28h 40m1 stop

$153Frontier

Find Deal

Thu, Oct 23 - Mon, Oct 27

5:30 am - 12:15 pmAUS-STL

6h 45m2 stops

9:57 am - 3:46 pmSTL-AUS

5h 49m1 stop

$156United Airlines

Find Deal

Sat, Dec 13 - Sun, Jan 18

4:00 pm - 8:53 pmAUS-STL

4h 53m1 stop

5:20 am - 11:52 amSTL-AUS

6h 32m1 stop

$159American Airlines

Find Deal

Tue, Oct 14 - Sat, Oct 18

9:23 pm - 9:06 amAUS-STL

11h 43m1 stop

7:55 pm - 11:32 pmSTL-AUS

27h 37m1 stop

$167Frontier

Find Deal

Mon, Sep 29 - Thu, Oct 2

5:00 am - 8:53 amAUS-STL

3h 53m1 stop

5:20 am - 11:52 amSTL-AUS

6h 32m1 stop

$168American Airlines

Find Deal

Tue, Oct 14 - Sat, Oct 18

9:23 pm - 9:06 amAUS-STL

11h 43m1 stop

10:57 am - 4:59 pmSTL-AUS

6h 02m1 stop

$187

Find Deal

Fri, Oct 3 - Sun, Oct 5

5:56 pm - 4:01 pmAUS-STL

22h 05m1 stop

12:20 pm - 11:12 pmSTL-AUS

10h 52m1 stop

$189

Find Deal

Thu, Nov 6 - Sun, Nov 9

Southwest flights from Austin to St. Louis

Our best Southwest deals on Austin to St. Louis flight tickets

Southwest

Oct 14

AUS6:00 amAustin Bergstrom

2h 05m

STL8:05 amLambert-St Louis

Oct 21

STL10:15 amLambert-St Louis

2h 05m

AUS12:20 pmAustin Bergstrom

$137

Find similar

Southwest

Oct 14

AUS5:10 pmAustin Bergstrom

4h 50m

1 stop

STL10:00 pmLambert-St Louis

Oct 21

STL10:15 amLambert-St Louis

2h 05m

AUS12:20 pmAustin Bergstrom

$147

Find similar

Southwest

Oct 14

AUS1:05 pmAustin Bergstrom

6h 05m

2 stops

STL7:10 pmLambert-St Louis

Oct 21

STL10:15 amLambert-St Louis

2h 05m

AUS12:20 pmAustin Bergstrom

$152

Find similar

United Airlines flights from Austin to St. Louis

Our best United Airlines deals on Austin to St. Louis flight tickets

United Airlines

Oct 19

AUS5:15 amAustin Bergstrom

4h 37m

1 stop

STL9:52 amLambert-St Louis

Oct 22

STL11:06 amLambert-St Louis

4h 14m

1 stop

AUS3:20 pmAustin Bergstrom

$151

Find similar

United Airlines

Dec 13

AUS5:30 amAustin Bergstrom

6h 45m

2 stops

STL12:15 pmLambert-St Louis

Jan 18

STL9:57 amLambert-St Louis

5h 49m

1 stop

AUS3:46 pmAustin Bergstrom

$156

Find similar

United Airlines

Oct 11

AUS5:37 pmAustin Bergstrom

4h 21m

1 stop

STL9:58 pmLambert-St Louis

Oct 18

STL9:20 amLambert-St Louis

8h 10m

2 stops

AUS5:30 pmAustin Bergstrom

$186

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 10/14

6:00 am-8:05 am

Nonstop2h 05m

Lambert-St Louis

Tue 10/21

10:15 am-12:20 pm

Nonstop2h 05m

$137

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 10/14

5:10 pm-10:00 pm

1 stop4h 50m

Lambert-St Louis

Tue 10/21

10:15 am-12:20 pm

Nonstop2h 05m

$147

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sun 10/19

5:15 am-9:52 am

1 stop4h 37m

Lambert-St Louis

Wed 10/22

11:06 am-3:20 pm

1 stop4h 14m

$151

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 10/23

4:48 pm-9:07 am

1 stop16h 19m

Lambert-St Louis

Mon 10/27

7:52 pm-12:32 am

1 stop28h 40m

$153

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 12/13

5:30 am-12:15 pm

2 stops6h 45m

Lambert-St Louis

Sun 1/18

9:57 am-3:46 pm

1 stop5h 49m

$156

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 10/14

4:00 pm-8:53 pm

1 stop4h 53m

Lambert-St Louis

Sat 10/18

5:20 am-11:52 am

1 stop6h 32m

$159

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Mon 9/29

9:23 pm-9:06 am

1 stop11h 43m

Lambert-St Louis

Thu 10/2

7:55 pm-11:32 pm

1 stop27h 37m

$167

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 10/14

5:00 am-8:53 am

1 stop3h 53m

Lambert-St Louis

Sat 10/18

5:20 am-11:52 am

1 stop6h 32m

$168

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 10/3

9:23 pm-9:06 am

1 stop11h 43m

Lambert-St Louis

Sun 10/5

10:57 am-4:59 pm

1 stop6h 02m

$187

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 11/6

5:56 pm-4:01 pm

1 stop22h 05m

Lambert-St Louis

Sun 11/9

12:20 pm-11:12 pm

1 stop10h 52m

$189

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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

Prices

Airlines

Layovers

Other information

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

In general, April 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 $303. The month of August is another great option to travel to St. Louis, with average flight prices from Austin averaging around $305.

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 $436. 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 $332 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 is only 1 cabin class 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.

Can stopping save me money on Austin to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Austin to St. Louis.

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

As of September 2025, prices for Austin to St. Louis flights are approximately 82% 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	$194
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 $194. The best round-trip flight deal from Austin to St. Louis found on momondo in the last 72 hours is $272.

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)

Search flight deals

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?
The number of operators available for flights from Austin Bergstrom Airport to Lambert-St Louis Airport is 4 as of September 2025.
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?
Based on momondo bookings for flights between Austin and St. Louis, the leading plane model is Boeing 737 MAX 8, making up 32.12% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 17.88%, Boeing 737-700 Passenger/BBJ1 (winglets) with 11.73%, and Airbus A320-100/200 with 10.06%.
What is the most popular airline from Austin to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Austin to St. Louis is Southwest, representing 73% of all bookings. The subsequent popular airlines are American Airlines at 20%, United Airlines at 4%, and Frontier at 3%.

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
Frontier	PriceFrom $150	Free Cancellation	Rating 5.8 3,173 reviews	Search Frontier flights
United Airlines	PriceFrom $194	Free Cancellation	Rating 7.4 8,931 reviews	Search United Airlines flights
Southwest	PriceFrom $199	Free Cancellation	Rating 8.0 4,245 reviews	Search Southwest flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Southwest Flights From Austin to St. Louis
Southwest flight deals from Austin to St. Louis start from $199 round-trip. Over the 14 Southwest flights for this route in a normal week, average airfare is usually $327 round-trip - but some users have found much cheaper deals with momondo.

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Fenton

Collinsville

Wentzville

Alton

St. Peters

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

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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Cheap flights from Austin to St. Louis from $69

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 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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?

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

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

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?

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

There is only 1 cabin class 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.

Can stopping save me money on Austin to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Austin to St. Louis.

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

As of September 2025, prices for Austin to St. Louis flights are approximately 82% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Austin Bergstrom to Lambert-St Louis?

Southwest, United Airlines, and American Airlines are the most popular carriers operating from Austin Bergstrom to Lambert-St Louis

What airlines fly to St. Louis?

Which airport is the most popular layover for flights between Austin and St. Louis?

Dallas (DFW) was the most common stop: 33% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Austin to St. Louis?

Flights via Dallas (DFW) offer the lowest average round-trip price of $260.

Which layover airport has the shortest travel time from Austin to St. Louis?

Flights connecting via Houston (HOU) have the shortest average one-way travel time: 3h 40m.

Which layover airport has the shortest connection time from Austin to St. Louis?

Houston (HOU) has the shortest average layover time for this route: 0h 40m.

How many flights depart from Austin to St. Louis on average per day?

As of September 2025, there are 2 flights per day flying from Austin to St. Louis. The most common time of day flights depart is 5:00AM, with 71% of flights taking off in the afternoon.

How many flights depart from Austin to St. Louis on average per week?

As of September 2025, 14 flights take off from Austin and land in St. Louis each week. The most common flight departure day for this route is Sun, with 29% of weekly flights taking off on this day.

When to book flights from Austin to St. Louis

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

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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?

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

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

Southwest Flights From Austin to St. Louis

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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