Find Cheap Flights from Austin to St. Louis (AUS - STL)

Flights overview

Useful information for finding cheap flights from Austin to St. Louis and booking your next trip

Cheapest round-trip flights	$180	Frontier 1 stop 9 hr Thu, May 28 — Mon, Jun 1	The cheapest round-trip flight from Austin to St. Louis is currently $180
Cheapest one-way flight	$96	Frontier 1 stop 9 hr Wed, May 27	The cheapest one-way flight from Austin to St. Louis is currently $96
Cheapest nonstop flights	$289	Southwest Nonstop 2 hr Thu, Jun 18 — Sun, Jun 21	The cheapest nonstop round-trip flight from Austin to St. Louis is currently $289
Last-minute weekend getaway	$256	Frontier 1 stop 22 hr Thu, May 7 — Sun, May 10	The cheapest last-minute weekend getaway from Austin to St. Louis is currently $256
Cheapest business class flights	$453	Frontier 1 stop 23 hr Sat, Jun 6 — Mon, Jun 8	The cheapest business class round-trip flight from Austin to St. Louis is currently $453

Fastest flight	2 hr	The fastest nonstop flight from Austin to St. Louis takes 2 hr
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Austin to St. Louis is typically October. The most expensive month to fly is typically July.

October Cheapest	Typical prices: $140–225
July Most expensive	Typical prices: $240–325

Popular airlines from Austin to St. Louis

Southwest

Nonstop

from $241

Typical price: $215–385

21 weekly nonstop flights

AUS - STL Every day

1081 weekly connecting flights

AUS - STL Every day
American

from $270

Typical price: $225–400

513 weekly connecting flights

AUS - STL Every day
United

from $251

Typical price: $230–425

282 weekly connecting flights

AUS - STL Every day
Delta

from $289

Typical price: $235–540

251 weekly connecting flights

AUS - STL Every day
Frontier

from $180

Typical price: $175–410

23 weekly connecting flights

AUS - STL Every day
Alaska

from $680

Typical price: $510–1,150

21 weekly connecting flights

AUS - STL Every day

Popular airports near Austin

Austin-Bergstrom International Airport (AUS)

Austin United States 24 min 6 mi
Dallas Fort Worth International Airport (DFW)

Dallas United States 3 hr 14 min 186 mi
George Bush Intercontinental Airport (IAH)

Houston United States 2 hr 44 min 144 mi
San Antonio International Airport (SAT)

San Antonio United States 1 hr 16 min 66 mi

Popular airports near St. Louis

St. Louis Lambert International Airport (STL)

St. Louis United States 21 min 12 mi
General Wayne A. Downing Peoria International Airport (PIA)

Peoria United States 2 hr 36 min 143 mi
Columbia Regional Airport (COU)

Columbia United States 2 hr 8 min 109 mi
Indianapolis International Airport (IND)

Indianapolis United States 3 hr 30 min 222 mi

Frequently asked questions about flying from Austin to St. Louis

The cheapest flights from Austin to St. Louis are usually in October. Typical ticket prices in October range from $140 to $225.

The cheapest round-trip flight from Austin to St. Louis recently found on Google Flights was with Frontier from $180. The cheapest one-way flight was with Frontier from $96.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Austin to St. Louis is $241, flying from May 28 to Jun 1.
The cheapest American flight from Austin to St. Louis is $270, flying from May 28 to May 31.
The cheapest United flight from Austin to St. Louis is $251, flying from May 28 to Jun 1.
The cheapest Delta flight from Austin to St. Louis is $289, flying from Jul 16 to Jul 19.
The cheapest Frontier flight from Austin to St. Louis is $180, flying from May 28 to Jun 1.
The cheapest Alaska flight from Austin to St. Louis is $680, flying from Jun 4 to Jun 8.

The cheapest round-trip flight from Austin to St. Louis starts at $180 from Thu, May 28 to Mon, Jun 1. The cheapest one-way flight starts at $96 and departs on Wed, May 27.

2 hr is the shortest flight time from Austin to St. Louis.

Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.

It's easy to use Google Flights to find the cheapest days to fly from Austin to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Austin to St. Louis really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Austin to St. Louis.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 21 nonstop flights and 1,081 connecting flights per week. Southwest flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .

Other popular airlines flying from Austin to St. Louis are:

American offers 513 connecting flights per week. American flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
United offers 282 connecting flights per week. United flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Delta offers 251 connecting flights per week. Delta flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Frontier offers 23 connecting flights per week. Frontier flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Alaska offers 21 connecting flights per week. Alaska flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .

The number of connecting flights refers to distinct flights with at least one stop between Austin and St. Louis.

The cheapest round-trip flight from Austin to St. Louis recently found on Google Flights was with Frontier from $180. The cheapest one-way flight was with Frontier from $96.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Austin to St. Louis is $241, flying from May 28 to Jun 1.
The cheapest American flight from Austin to St. Louis is $270, flying from May 28 to May 31.
The cheapest United flight from Austin to St. Louis is $251, flying from May 28 to Jun 1.
The cheapest Delta flight from Austin to St. Louis is $289, flying from Jul 16 to Jul 19.
The cheapest Frontier flight from Austin to St. Louis is $180, flying from May 28 to Jun 1.
The cheapest Alaska flight from Austin to St. Louis is $680, flying from Jun 4 to Jun 8.

Southwest flies direct from Austin to St. Louis.

There are 21 Southwest direct flights from Austin to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Austin and St. Louis at price $256 is offered by Frontier from Thu, May 7 to Sun, May 10.

Southwest flies direct from Austin to St. Louis.

There are 21 Southwest direct flights from Austin to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Austin to St. Louis on a daily basis.

The cheapest direct (nonstop) round-trip flights between Austin and St. Louis start at $289 from Thu, Jun 18 to Sun, Jun 21 with Southwest.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Austin to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Austin and St. Louis start at $453 from Sat, Jun 6 to Mon, Jun 8 with Frontier.

The cheapest economy class round-trip flights between Austin and St. Louis start at $180 from Thu, May 28 to Mon, Jun 1.

To book business class trips from Austin to St. Louis, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Austin and St. Louis starts at $256 from Thu, May 7 to Sun, May 10 with Frontier.

The cheapest last-minute deal between Austin and St. Louis at price $256 is offered by Frontier from Thu, May 7 to Sun, May 10.

To find last-minute flight deals from Austin to St. Louis, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.