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	$144	Frontier 1 stop 8 hr Sat, Feb 21 — Mon, Feb 23	The cheapest round-trip flight from Austin to St. Louis is currently $144
Cheapest one-way flight	$64	Frontier 1 stop 8 hr Wed, Feb 18	The cheapest one-way flight from Austin to St. Louis is currently $64
Cheapest nonstop flights	$229	Southwest Nonstop 3 hr Thu, Apr 16 — Sun, Apr 19	The cheapest nonstop round-trip flight from Austin to St. Louis is currently $229
Last-minute weekend getaway	$202	Frontier 1 stop 31 hr Thu, Jan 29 — Mon, Feb 2	The cheapest last-minute weekend getaway from Austin to St. Louis is currently $202
Cheapest business class flights	$568	United 1 stop 4 hr Sat, Apr 4 — Mon, Apr 6	The cheapest business class round-trip flight from Austin to St. Louis is currently $568

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 $219

Typical price: $215–410

13 weekly nonstop flights

AUS - STL Every day

1032 weekly connecting flights

AUS - STL Every day
American

from $229

Typical price: $225–410

407 weekly connecting flights

AUS - STL Every day
United

from $229

Typical price: $230–450

275 weekly connecting flights

AUS - STL Every day
Delta

from $240

Typical price: $235–540

219 weekly connecting flights

AUS - STL Every day
Frontier

from $144

Typical price: $175–430

16 weekly connecting flights

AUS - STL Every Mon, Tue, Thu, Fri, Sat, Sun
Alaska

from $453

Typical price: $510–1,150

15 weekly connecting flights

AUS - STL Every day

Popular airports near Austin

Austin-Bergstrom International Airport (AUS)

Austin United States 23 min 6 mi
Dallas Fort Worth International Airport (DFW)

Dallas United States 3 hr 15 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 17 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 35 min 143 mi
MidAmerica St. Louis Airport (BLV)

Belleville United States 34 min 20 mi
Indianapolis International Airport (IND)

Indianapolis United States 3 hr 29 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 $144. The cheapest one-way flight was with Frontier from $64.

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

The cheapest Southwest flight from Austin to St. Louis is $219, flying from Apr 16 to Apr 20.
The cheapest American flight from Austin to St. Louis is $229, flying from Feb 28 to Mar 2.
The cheapest United flight from Austin to St. Louis is $229, flying from Feb 19 to Feb 23.
The cheapest Delta flight from Austin to St. Louis is $240, flying from Apr 4 to Apr 5.
The cheapest Frontier flight from Austin to St. Louis is $144, flying from Feb 21 to Feb 23.
The cheapest Alaska flight from Austin to St. Louis is $453, flying from Feb 28 to Mar 2.

The cheapest round-trip flight from Austin to St. Louis starts at $144 from Sat, Feb 21 to Mon, Feb 23. The cheapest one-way flight starts at $64 and departs on Wed, Feb 18.

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 13 nonstop flights and 1,032 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 407 connecting flights per week. American flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
United offers 275 connecting flights per week. United flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Delta offers 219 connecting flights per week. Delta flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Frontier offers 16 connecting flights per week. Frontier flies from Austin-Bergstrom International Airport (AUS) to St. Louis Lambert International Airport (STL) .
Alaska offers 15 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 $144. The cheapest one-way flight was with Frontier from $64.

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

The cheapest Southwest flight from Austin to St. Louis is $219, flying from Apr 16 to Apr 20.
The cheapest American flight from Austin to St. Louis is $229, flying from Feb 28 to Mar 2.
The cheapest United flight from Austin to St. Louis is $229, flying from Feb 19 to Feb 23.
The cheapest Delta flight from Austin to St. Louis is $240, flying from Apr 4 to Apr 5.
The cheapest Frontier flight from Austin to St. Louis is $144, flying from Feb 21 to Feb 23.
The cheapest Alaska flight from Austin to St. Louis is $453, flying from Feb 28 to Mar 2.

Southwest flies direct from Austin to St. Louis.

There are 13 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 $202 is offered by Frontier from Thu, Jan 29 to Mon, Feb 2.

Southwest flies direct from Austin to St. Louis.

There are 13 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 $229 from Thu, Apr 16 to Sun, Apr 19 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 $568 from Sat, Apr 4 to Mon, Apr 6 with United.

The cheapest economy class round-trip flights between Austin and St. Louis start at $144 from Sat, Feb 21 to Mon, Feb 23.

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 $202 from Thu, Jan 29 to Mon, Feb 2 with Frontier.

The cheapest last-minute deal between Austin and St. Louis at price $202 is offered by Frontier from Thu, Jan 29 to Mon, Feb 2.

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.