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, about 10% of flights on this route have been direct. For flights that include stopovers, travelers typically encounter a median of 2 stops. This indicates that while direct options exist, connecting flights are more common.

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

The typical flight time for a direct flight from Austin to St. Louis is approximately 5 hours and 44 minutes. For flights with one stop, the median duration is generally shorter, averaging around 4 hours and 42 minutes. The air distance between Austin and St. Louis is approximately 1162 kilometers, contributing to these flight durations.

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

Yes, setting a price alert for flights from Austin to St. Louis is advisable. Historically, this route has been classified as one with frequent price fluctuations. This means that prices for this route tend to change often, offering opportunities to find better deals. Monitoring prices can help travelers secure more favorable fares.

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 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

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

Explore current cheapest deals departing from Austin to St. Louis

2026-08-19 – 2026-08-27
AUS - St. Louis
77% AI deal score
$278
$158
Round trip
2026-08-20 – 2026-08-24
AUS - St. Louis
78% AI deal score
$310
$161
Round trip
2026-09-06 – 2026-09-11
AUS - St. Louis
75% AI deal score
$266
$167
Round trip
2026-08-10 – 2026-08-14
AUS - St. Louis
78% AI deal score
$318
$168
Round trip
2026-08-08 – 2026-08-10
AUS - St. Louis
78% AI deal score
$323
$171
Round trip
2026-09-06 – 2026-09-13
AUS - St. Louis
74% AI deal score
$257
$172
Round trip
2026-08-13 – 2026-08-17
AUS - St. Louis
77% AI deal score
$313
$173
Round trip
2026-09-08 – 2026-09-11
AUS - St. Louis
74% AI deal score
$271
$173
Round trip
2026-09-09 – 2026-09-11
AUS - St. Louis
74% AI deal score
$272
$173
Round trip
2026-08-14 – 2026-09-11
AUS - St. Louis
73% AI deal score
$242
$174
Round trip

Austin to St. Louis: Overview

Insights for flights from Austin to St. Louis

Most itineraries for flights from Austin to St. Louis are connecting, with only a 0.1% share of recent fares being non-stop. For the majority of journeys that include connections, the typical number of stopovers is 2.

A typical journey from Austin to St. Louis takes about 9h 14m, including connections. This duration accounts for the fact that most itineraries on this route involve at least one stopover, reflecting the overall travel time you can expect.

For those seeking cheap flights from Austin to St. Louis, the most affordable times to fly are typically December, with a median fare of $135, followed by February at $139, and January at $140. These months offer significantly lower prices compared to the overall median for the route.

Fares for this route typically range from $287–$628, with a median of $349. Right now, fares are above the typical level, and only 2% of recent fares were classified as a good price. New deals appear almost daily, so setting up a price alert can help you track fluctuations.

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

Regular price: $250 - $395

Prices are currently below the regular range.

The regular price range for flights from Austin to St. Louis is between $250 and $395. The current lowest deal is $168 with Frontier Airlines for travel from Aug 19-Aug 24.

now $168

Low $250

High $395

The cheapest time to fly from Austin to St. Louis

The cheapest month to fly from Austin to St. Louis 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

Mon, Aug 3

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$405

$257

One-way

Wed, Aug 5

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$374

$278

One-way

Fri, Aug 7

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$364

$308

One-way

Sat, Aug 8

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$361

$258

One-way

Sat, Aug 8

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

$322

$302

One-way

Mon, Aug 10

⌛ Last-Minute

AUS - St. Louis

Austin (AUS) - St. Louis (STL)

Frontier Airlines

$335

$174

One-way

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

2 nights

Aug 10 - Aug 12

$335 → $174

48%

3 nights

Aug 3 - Aug 6

$405 → $257

37%

5 nights

Aug 19 - Aug 24

$306 → $168

45%

5 nights

Aug 26 - Aug 31

$303 → $168

45%

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 for the last 90 days.

📅 Best time to fly

Cheapest months: December, February, January

Historically, the cheapest months to fly are December ($135), February ($139), and January ($140).

⏱️ Flight duration

Median flight time is 9h 14m

The median flight time from Austin to St. Louis is 9 hours and 14 minutes.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights make up 90% of routes, with a median of 2 stopovers.

🏆 Airline highlight

Frontier Airlines offers a recent deal

A recent deal from Frontier Airlines to St. Louis was found for $168.

🎯 Booking tip

Deals are frequent on this route

Deals on flights from Austin to St. Louis are historically frequent, appearing often.

Austin main airports to depart from

Austin–Bergstrom International (AUS)

Cheapest

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

📍 ~10 km from city center (reachable by car)

💸 Flights from ~$194

St. Louis main airports to arrive at

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a key arrival point for flights to St. Louis.

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

💸 Flights from ~$194

Airports nearby St. Louis used as alternative

MidAmerica St. Louis (BLV)

MidAmerica St. Louis (BLV) is the closest alternative and a secondary relief airport for the St. Louis area.

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

💸 Flights from ~$299

Business & First Class Flight Deals to St. Louis

80% AI deal score

$1,424

$760

Save $664

Frequently Asked Questions About Flights to St. Louis

Historically, booking more than 60 days in advance typically yields the lowest average prices for flights from Austin to St. Louis. Across the trailing quarter, prices for flights booked 60+ days out averaged around $292. In contrast, flights booked 7-13 days before departure had a significantly higher average price of $415. For those booking 28-59 days ahead, the average price was $293, indicating that earlier booking generally offers better value.

Based on data from the trailing 90 days, a good price for a flight from Austin to St. Louis is considered to be around $287 or less. The median price for this route was $349 during the same period. Fares exceeding $628 were among the highest 25% of prices observed, suggesting that prices below $287 offer significant savings.

Historically, December, February, and January have offered some of the lowest median prices for flights from Austin to St. Louis. December typically sees a median price of $135, while February's median is around $139. January also presents a favorable median of $140, which is considerably lower than the annual median price of $349 for this route. These months are generally more economical for travelers.

Related routes

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Flights to St. Louis from other cities

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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: $250 - $395

Prices are currently below the regular range.

The regular price range for flights from Austin to St. Louis is between $250 and $395. The current lowest deal is $168 with Frontier Airlines for travel from Aug 19-Aug 24.

now $168

Low $250

High $395

The cheapest time to fly from Austin to St. Louis

December

Cheapest

Flights from $135

June

Most Expensive

Flights from $693

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec