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

As of October 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 47% of flights taking off in the afternoon.

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

As of October 2025, 18 flights take off from Austin and land in St. Louis each week. The most common flight departure day for this route is Mon, with 22% of weekly flights taking off on this day.

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

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

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 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 connection time from Austin to St. Louis?

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

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.

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 59% 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.

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 October 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.

$68 Cheap Flights from Austin to St. Louis in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Austin to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:45 am - 9:07 amAUS-STL

25h 22m1 stop

7:45 pm - 8:42 pmSTL-AUS

24h 57m1 stop

$122Frontier

Find Deal

mar., nov. 4 - mar., nov. 11

7:45 am - 9:07 amAUS-STL

25h 22m1 stop

11:07 am - 5:01 pmSTL-AUS

5h 54m1 stop

$133Frontier

Find Deal

mar., nov. 11 - jue., nov. 13

5:00 am - 10:12 amAUS-STL

29h 12m2 stops

7:45 pm - 2:40 pmSTL-AUS

18h 55m1 stop

$170Multiple Airlines

Find Deal

mié., nov. 12 - mié., nov. 19

5:30 am - 7:35 amAUS-STL

2h 05mnonstop

8:25 pm - 10:35 pmSTL-AUS

2h 10mnonstop

$187Southwest

Find Deal

lun., nov. 17 - mar., nov. 18

5:00 am - 5:16 pmAUS-STL

12h 16m1 stop

10:53 am - 10:58 pmSTL-AUS

12h 05m1 stop

$189Spirit Airlines

Find Deal

dom., nov. 16 - jue., nov. 20

10:37 am - 9:07 amAUS-STL

22h 30m1 stop

10:53 am - 10:58 pmSTL-AUS

12h 05m1 stop

$193Multiple Airlines

Find Deal

lun., nov. 17 - jue., nov. 20

3:45 pm - 10:10 pmAUS-STL

6h 25m1 stop

10:15 am - 12:30 pmSTL-AUS

2h 15mnonstop

$197Southwest

Find Deal

lun., nov. 17 - mar., nov. 18

5:30 am - 10:04 amAUS-STL

4h 34m1 stop

3:19 pm - 10:44 pmSTL-AUS

7h 25m1 stop

$264United Airlines

Find Deal

dom., dic. 14 - lun., dic. 15

5:59 pm - 9:55 pmAUS-STL

3h 56m1 stop

6:00 am - 11:10 amSTL-AUS

5h 10m1 stop

$268United Airlines

Find Deal

vie., dic. 26 - mié., dic. 31

8:48 pm - 11:01 amAUS-STL

14h 13m2 stops

12:20 pm - 12:07 amSTL-AUS

11h 47m1 stop

$272Spirit Airlines

Find Deal

sáb., ene. 31 - dom., mar. 1

Frontier flights from Austin to St. Louis

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

Frontier

Nov 4

AUS7:45 amAustin Bergstrom

25h 22m

1 stop

STL9:07 amLambert-St Louis

Nov 11

STL7:45 pmLambert-St Louis

24h 57m

1 stop

AUS8:42 pmAustin Bergstrom

$122

Find similar

Frontier

Nov 11

AUS7:45 amAustin Bergstrom

25h 22m

1 stop

STL9:07 amLambert-St Louis

Nov 13

STL11:07 amLambert-St Louis

5h 54m

1 stop

AUS5:01 pmAustin Bergstrom

$133

Find similar

Frontier

Nov 17

AUS10:37 amAustin Bergstrom

22h 30m

1 stop

STL9:07 amLambert-St Louis

Nov 18

STL7:45 pmLambert-St Louis

24h 57m

1 stop

AUS8:42 pmAustin Bergstrom

$137

Find similar

Spirit Airlines flights from Austin to St. Louis

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

Spirit Airlines

Nov 16

AUS5:00 amAustin Bergstrom

12h 16m

1 stop

STL5:16 pmLambert-St Louis

Nov 20

STL10:53 amLambert-St Louis

12h 05m

1 stop

AUS10:58 pmAustin Bergstrom

$189

Find similar

Spirit Airlines

Jan 31

AUS8:48 pmAustin Bergstrom

14h 13m

2 stops

STL11:01 amLambert-St Louis

Mar 1

STL12:20 pmLambert-St Louis

11h 47m

1 stop

AUS12:07 amAustin Bergstrom

$272

Find similar

Fly from

Fly to

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

mar. 11/4

7:45 am-9:07 am

1 stop25h 22m

Lambert-St Louis

mar. 11/11

7:45 pm-8:42 pm

1 stop24h 57m

$122

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

mar. 11/11

7:45 am-9:07 am

1 stop25h 22m

Lambert-St Louis

jue. 11/13

11:07 am-5:01 pm

1 stop5h 54m

$133

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

mié. 11/12

5:00 am-10:12 am

2 stops29h 12m

Lambert-St Louis

mié. 11/19

7:45 pm-2:40 pm

1 stop18h 55m

$170

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

lun. 11/17

5:30 am-7:35 am

Nonstop2h 05m

Lambert-St Louis

mar. 11/18

8:25 pm-10:35 pm

Nonstop2h 10m

$187

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

dom. 11/16

5:00 am-5:16 pm

1 stop12h 16m

Lambert-St Louis

jue. 11/20

10:53 am-10:58 pm

1 stop12h 05m

$189

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

lun. 11/17

10:37 am-9:07 am

1 stop22h 30m

Lambert-St Louis

jue. 11/20

10:53 am-10:58 pm

1 stop12h 05m

$193

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

lun. 11/17

3:45 pm-10:10 pm

1 stop6h 25m

Lambert-St Louis

mar. 11/18

10:15 am-12:30 pm

Nonstop2h 15m

$197

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

dom. 12/14

5:30 am-10:04 am

1 stop4h 34m

Lambert-St Louis

lun. 12/15

3:19 pm-10:44 pm

1 stop7h 25m

$264

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

vie. 12/26

5:59 pm-9:55 pm

1 stop3h 56m

Lambert-St Louis

mié. 12/31

6:00 am-11:10 am

1 stop5h 10m

$268

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

sáb. 1/31

8:48 pm-11:01 am

2 stops14h 13m

Lambert-St Louis

dom. 3/1

12:20 pm-12:07 am

1 stop11h 47m

$272

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 January 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 $303. 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 $466. 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 $373 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 $330 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 October 2025, prices for Austin to St. Louis flights are approximately 10% cheaper 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	$125
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 $125. The best round-trip flight deal from Austin to St. Louis found on momondo in the last 72 hours is $278.

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 October 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 31.30% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 16.81%, Airbus A320-100/200 with 9.57%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 8.12%.
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 75% of all bookings. The subsequent popular airlines are American Airlines at 18%, Frontier at 4%, and United Airlines 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
United Airlines	PriceFrom $194	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
Frontier	PriceFrom $195	Free Cancellation	Rating 5.8 3,137 reviews	Search Frontier flights
Southwest	PriceFrom $198	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights
American Airlines	PriceFrom $230	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights

Southwest Flights From Austin to St. Louis
Southwest flight deals from Austin to St. Louis start from $198 round-trip. Over the 18 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

Wentzville

Collinsville

Fenton

St. Peters

Alton

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

sáb. 11/15

sáb. 11/22

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Missouri

Branson Airport

Cape Girardeau Airport

Columbia Regional Airport

Kirksville Cannon Memorial Airport

Joplin Airport

Kansas City Airport

Springfield-Branson Airport

Fort Leonard Wood Waynesville Regional Airport

Popular cities in the United States

Flights to New Yorkfrom $48

Flights to Los Angelesfrom $48

Flights to Miamifrom $53

Flights to Chicagofrom $49

Flights to Orlandofrom $54

Flights to Las Vegasfrom $38

Flights to San Franciscofrom $48

Flights to Washington, D.C.from $50

Flights to Bostonfrom $55

Flights to Atlantafrom $45

Flights to Dallasfrom $63

Flights to Seattlefrom $71

Cheap flights from Austin to St. Louis from $68

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 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Austin to St. Louis

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Austin to St. Louis

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

Spirit Airlines flights from Austin to St. Louis

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

momondo Fare Finder

Use the filters below to find and compare flights from Austin to St. Louis that are best for you.

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?

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 October 2025, prices for Austin to St. Louis flights are approximately 10% cheaper when compared to flights at the same time last year.

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

Frontier, Spirit Airlines, and Southwest 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 October 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 47% of flights taking off in the afternoon.

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

As of October 2025, 18 flights take off from Austin and land in St. Louis each week. The most common flight departure day for this route is Mon, with 22% 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

Airports servicing Missouri