Can I fly direct from Austin to St. Louis?

Direct flights from Austin to St. Louis are available, though they represent a smaller portion of the total routes. Historically, approximately 10% of flights on this route have been direct. For flights with connections, travelers typically encounter a median of 2 stopovers.

How many hours is the flight from Austin to St. Louis?

The median flight time for a direct flight from Austin to St. Louis is 5 hours and 44 minutes. For flights with one stop, the median duration is typically shorter, averaging 4 hours and 42 minutes. The distance covered on this route is approximately 1162 kilometers.

Should I set a price alert for Austin to St. Louis flights?

Historically, prices for flights from Austin to St. Louis have fluctuated frequently. This route is classified as one with frequent price changes across the trailing 30 days. Setting a price alert can help travelers track these changes and potentially secure a more favorable fare.

Flights From Austin

To St. Louis

Cheap Flights from Austin to St. Louis

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Deals from

Austin

RatePunk searches hundreds of travel sites at once for deals on flights to St. Louis

Prices updated 1 day ago

461 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

Today’s best flight deals from Austin to St. Louis

Explore current cheapest deals departing from Austin to St. Louis

2026-10-29 – 2026-11-09
AUS - St. Louis
78% AI deal score
$236
$129
Round trip
2026-12-01 – 2026-12-09
AUS - St. Louis
74% AI deal score
$266
$136
Round trip
2026-11-05 – 2026-11-09
AUS - St. Louis
76% AI deal score
$265
$157
Round trip
2026-12-01 – 2026-12-07
AUS - St. Louis
77% AI deal score
$277
$158
Round trip
2026-12-01 – 2026-12-14
AUS - St. Louis
74% AI deal score
$248
$163
Round trip
2026-11-12 – 2026-12-02
AUS - St. Louis
72% AI deal score
$224
$164
Round trip
2026-12-01 – 2026-12-04
AUS - St. Louis
76% AI deal score
$287
$165
Round trip
2026-11-05 – 2026-12-02
AUS - St. Louis
71% AI deal score
$219
$167
Round trip
2026-11-12 – 2026-11-16
AUS - St. Louis
75% AI deal score
$265
$168
Round trip
2026-10-29 – 2026-11-16
AUS - St. Louis
72% AI deal score
$226
$168
Round trip

Austin to St. Louis: Overview

Insights for flights from Austin to St. Louis

Most itineraries from Austin to St. Louis connect at least once, with only 0.1% of recent fares being non-stop. For the majority of flights that include connections, you can expect to make two stops along the way.

A typical journey from Austin to St. Louis takes approximately 9 hours and 14 minutes, including connections. This duration reflects the common need for layovers on this route, making it important to factor in the total travel time when planning your trip.

When considering cheap flights from Austin to St. Louis, prices typically range from $287 to $628, with a median fare of $349. Right now, current fares are above the typical level for this route. Only 2% of recent fares have been classified as a good price, indicating that deals are not widely available at present. New deals appear almost daily, so setting up a price alert could be beneficial.

The cheapest time to fly from Austin to St. Louis is typically during the winter months. December stands out as the most affordable, with a median fare of just $135. Following closely are February, with a median fare of $139, and January, where the median fare is $140. These months offer significantly lower prices compared to the overall median for the route.

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

Regular price: $218 - $330

Prices for flights from Austin to St. Louis are currently below the regular range.

The regular price range for flights from Austin to St. Louis is typically between $218 and $330. The current lowest deal is $158 with Frontier Airlines, valid for travel from Nov 5-Nov 9.

now $158

Low $218

High $330

The cheapest time to fly from Austin to St. Louis

The cheapest month to fly from AUS to STL is December, with a median price of $135. The most expensive month is June, with a median price of $693. Prices are generally lower from January to December.

December

Cheapest

Flights from $135

June

Most Expensive

Flights from $693

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Austin to St. Louis

Southwest Airlines

Last-minute flights going from Austin to St. Louis

Thu, Sep 17

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

American Airlines

$469

$420

One-way

Mon, Sep 21

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$394

$360

One-way

Wed, Sep 23

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Southwest Airlines

$344

$363

One-way

Fri, Sep 25

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$326

$321

One-way

Sat, Sep 26

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$322

$263

One-way

Sat, Sep 26

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$324

$293

One-way

Biggest price drops on these dates for flights from Austin to St. Louis

8 nights

Dec 1 - Dec 9

$266 → $136

49%

6 nights

Dec 1 - Dec 7

$277 → $158

43%

4 nights

Nov 5 - Nov 9

$265 → $157

41%

4 nights

Oct 29 - Nov 2

$276 → $168

39%

Popular Airports to fly from Austin to St. Louis

Austin - St. Louis route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Austin to St. Louis are above the typical level at $158.

📅 Best time to fly

December is historically cheapest at $135

Historically, December is the cheapest month to fly from Austin to St. Louis, with a median price of $135.

⏱️ Flight duration

Typical flight time is 9h 14m

The typical flight duration from Austin to St. Louis is 9 hours and 14 minutes.

✈️ Airlines & availability

Connecting flights are dominant on this route

Connecting flights are dominant, with a median of 2 stopovers when connecting.

🏆 Airline highlight

Southwest Airlines offers direct flights

Southwest Airlines is one of the carriers offering direct flights on this route.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from Austin to St. Louis are frequent, appearing within a 30-day window.

Austin main airports to depart from

Austin–Bergstrom International (AUS)

Cheapest

Austin–Bergstrom International Airport is a good choice for flights from Austin to St. Louis.

📍 ~11 km from Austin city center (reachable by car)

💸 Flights from ~$157

St. Louis main airports to arrive at

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a convenient arrival choice for reaching St. Louis.

📍 ~20 km from St. Louis (reachable by car)

💸 Flights from ~$158

Airports nearby St. Louis used as alternative

MidAmerica St. Louis (BLV)

MidAmerica St. Louis (BLV) is a useful alternative, especially for travelers on the Illinois side of the metro area.

📍 ~40 km from St. Louis (reachable by car)

💸 Flights from ~$312

Business & First Class Flight Deals to St. Louis

Discover luxury on the budget with premium cabin class on flights from Austin to St. Louis.

Elite

Best Elite deals to St. Louis

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From AUS

Elite

Oct 14

St. Louis, United States

83% AI deal score

$1,478

$645

Save $833

United Airlines

Business Class

From AUS

Elite

Oct 22

St. Louis, United States

83% AI deal score

$1,466

$645

Save $821

United Airlines

Business Class

From AUS

Elite

Oct 02

St. Louis, United States

82% AI deal score

$1,342

$643

Save $699

United Airlines

Business Class

From AUS

Elite

Jan 07

St. Louis, United States

81% AI deal score

$1,214

$643

Save $571

United Airlines

Business Class

From AUS

Elite

Oct 08

St. Louis, United States

81% AI deal score

$1,304

$684

Save $620

United Airlines

Business Class

From AUS

Elite

Sep 24

St. Louis, United States

80% AI deal score

$1,170

$641

Save $529

United Airlines

Business Class

From AUS

Elite

Oct 30

St. Louis, United States

80% AI deal score

$1,495

$743

Save $752

United Airlines

Business Class

From AUS

Elite

Nov 11

St. Louis, United States

80% AI deal score

$1,489

$744

Save $745

United Airlines

Business Class

From AUS

St. Louis, United States

77% AI deal score

$2,362

$1,127

Save $1,235

Frequently Asked Questions About Flights to St. Louis

Historically, booking more than 60 days in advance typically offers the lowest average prices for flights from Austin to St. Louis. Across the trailing quarter, flights booked 60+ days out had an average price of $292. In contrast, booking within 7-13 days of departure saw average prices rise to $415, indicating that earlier booking is generally more economical for this route.

A good price for a flight from Austin to St. Louis is considered to be around $287 or less. This threshold is based on historical data from the trailing 90 days. The median price for this route was $349, while prices at the 75th percentile reached $628, indicating that fares below the $287 mark represent significant savings.

Historically, December, February, and January have offered the lowest median prices for flights from Austin to St. Louis. December typically sees a median price of $135, with February close behind at $139. The annual median price for this route is $349, making these months considerably more affordable for travelers.

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Austin to St. Louis: Overview

Insights for flights from Austin to St. Louis

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

Regular price: $218 - $330

Prices for flights from Austin to St. Louis are currently below the regular range.

The regular price range for flights from Austin to St. Louis is typically between $218 and $330. The current lowest deal is $158 with Frontier Airlines, valid for travel from Nov 5-Nov 9.

now $158

Low $218

High $330

The cheapest time to fly from Austin to St. Louis

The cheapest month to fly from AUS to STL is December, with a median price of $135. The most expensive month is June, with a median price of $693. Prices are generally lower from January to December.

December

Cheapest

Flights from $135

June

Most Expensive

Flights from $693

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Austin to St. Louis

Southwest Airlines

Last-minute flights going from Austin to St. Louis

Thu, Sep 17

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

American Airlines

$469

$420

One-way

Mon, Sep 21

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$394

$360

One-way

Wed, Sep 23

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Southwest Airlines

$344

$363

One-way

Fri, Sep 25

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$326

$321

One-way

Sat, Sep 26

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$322

$263

One-way

Sat, Sep 26

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$324

$293

One-way

Biggest price drops on these dates for flights from Austin to St. Louis

8 nights

Dec 1 - Dec 9

$266 → $136

49%

6 nights

Dec 1 - Dec 7

$277 → $158

43%

4 nights

Nov 5 - Nov 9

$265 → $157

41%

4 nights

Oct 29 - Nov 2

$276 → $168

39%

Popular Airports to fly from Austin to St. Louis

Austin - St. Louis route insights

💸 Price insights

Recent fares are above the typical level

Recent fares from Austin to St. Louis are above the typical level at $158.

📅 Best time to fly

December is historically cheapest at $135

Historically, December is the cheapest month to fly from Austin to St. Louis, with a median price of $135.

⏱️ Flight duration

Typical flight time is 9h 14m

The typical flight duration from Austin to St. Louis is 9 hours and 14 minutes.

✈️ Airlines & availability

Connecting flights are dominant on this route

Connecting flights are dominant, with a median of 2 stopovers when connecting.

🏆 Airline highlight

Southwest Airlines offers direct flights

Southwest Airlines is one of the carriers offering direct flights on this route.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from Austin to St. Louis are frequent, appearing within a 30-day window.

Austin main airports to depart from

Austin–Bergstrom International (AUS)

Cheapest

Austin–Bergstrom International Airport is a good choice for flights from Austin to St. Louis.

📍 ~11 km from Austin city center (reachable by car)

💸 Flights from ~$157

St. Louis main airports to arrive at

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a convenient arrival choice for reaching St. Louis.

📍 ~20 km from St. Louis (reachable by car)

💸 Flights from ~$158

Airports nearby St. Louis used as alternative

MidAmerica St. Louis (BLV)

MidAmerica St. Louis (BLV) is a useful alternative, especially for travelers on the Illinois side of the metro area.

St. Louis, United States

79% AI deal score

$1,403

$662

Save $741

From AUS

Elite

Sep 28

St. Louis, United States

78% AI deal score

$1,505

$645

Save $860

United Airlines

Business Class

From AUS

Elite

Sep 14

St. Louis, United States

78% AI deal score

$1,139

$692

Save $447

United Airlines

Business Class

From AUS

Elite

Aug 31

St. Louis, United States

77% AI deal score

$2,362

$1,127

Save $1,235

Frequently Asked Questions About Flights to St. Louis

Cheap Flights from Austin to St. Louis

Today’s best flight deals from Austin to St. Louis

Austin to St. Louis: Overview

Insights for flights from Austin to St. Louis

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

The cheapest time to fly from Austin to St. Louis

Direct flights from Austin to St. Louis

Last-minute flights going from Austin to St. Louis

Biggest price drops on these dates for flights from Austin to St. Louis

Popular Airports to fly from Austin to St. Louis

Austin - St. Louis route insights

Recent fares are above the typical level

December is historically cheapest at $135

Typical flight time is 9h 14m

Connecting flights are dominant on this route

Southwest Airlines offers direct flights

Deals are frequent on this route

Austin main airports to depart from

St. Louis main airports to arrive at

Airports nearby St. Louis used as alternative

Business & First Class Flight Deals to St. Louis

Best Elite deals to St. Louis

Oct 14

Oct 22

Oct 02

Jan 07

Oct 08

Sep 24

Oct 30

Nov 11

Oct 03

Sep 28

Sep 14

Aug 31

Frequently Asked Questions About Flights to St. Louis

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

What's a cheap fare from Austin to St. Louis?

What's the best month to fly from Austin to St. Louis?

Can I fly direct from Austin to St. Louis?

How many hours is the flight from Austin to St. Louis?

Should I set a price alert for Austin to St. Louis flights?

Related routes

More routes from Austin

Flights to St. Louis from other cities

Austin to St. Louis: Overview

Insights for flights from Austin to St. Louis

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

The cheapest time to fly from Austin to St. Louis

Direct flights from Austin to St. Louis

Last-minute flights going from Austin to St. Louis

Biggest price drops on these dates for flights from Austin to St. Louis

Popular Airports to fly from Austin to St. Louis

Austin - St. Louis route insights

Recent fares are above the typical level

December is historically cheapest at $135

Typical flight time is 9h 14m

Connecting flights are dominant on this route

Southwest Airlines offers direct flights

Deals are frequent on this route

Austin main airports to depart from

St. Louis main airports to arrive at

Airports nearby St. Louis used as alternative

Business & First Class Flight Deals to St. Louis

Best Elite deals to St. Louis

Oct 14

Oct 22

Oct 02

Jan 07

Oct 08

Sep 24

Oct 30

Nov 11

Oct 03

Sep 28

Sep 14

Aug 31

Frequently Asked Questions About Flights to St. Louis

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

What's a cheap fare from Austin to St. Louis?

What's the best month to fly from Austin to St. Louis?