Cheap flights from St. Louis to Austin

Flights overview

Useful information for finding cheap flights from St. Louis to Austin and booking your next trip
Cheapest round-trip flights $160
Frontier 1 stop 15 hr Thu, Apr 16 — Sun, Apr 19
The cheapest round-trip flight from St. Louis to Austin is currently $160
Cheapest one-way flight $80
Frontier 1 stop 6 hr Sun, Apr 19
The cheapest one-way flight from St. Louis to Austin is currently $80
Cheapest nonstop flights $209
Southwest Nonstop 3 hr Thu, May 7 — Mon, May 11
The cheapest nonstop round-trip flight from St. Louis to Austin is currently $209
Last-minute weekend getaway $340
Frontier 1 stop 11 hr Thu, Mar 12 — Sun, Mar 15
The cheapest last-minute weekend getaway from St. Louis to Austin is currently $340
Cheapest business class flights $388
Frontier 1 stop 14 hr Sat, May 9 — Mon, May 11
The cheapest business class round-trip flight from St. Louis to Austin is currently $388
Fastest flight 2 hr The fastest nonstop flight from St. Louis to Austin 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 St. Louis to Austin is typically October. The most expensive month to fly is typically July.
October
Cheapest
Typical prices: $140–265
July
Most expensive
Typical prices: $240–305

Popular airlines from St. Louis to Austin

  • Southwest
    Nonstop
    from $209
    Typical price: $215–395
    20 weekly nonstop flights
    STL - AUS Every day
    1027 weekly connecting flights
    STL - AUS Every day
  • American
    from $219
    Typical price: $225–405
    486 weekly connecting flights
    STL - AUS Every day
  • United
    from $219
    Typical price: $225–435
    320 weekly connecting flights
    STL - AUS Every day
  • Delta
    from $219
    Typical price: $235–570
    230 weekly connecting flights
    STL - AUS Every day
  • Alaska
    from $579
    Typical price: $500–1,150
    21 weekly connecting flights
    STL - AUS Every day
  • Frontier
    from $160
    Typical price: $180–400
    19 weekly connecting flights
    STL - AUS Every day

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
  • Columbia Regional Airport (COU)
    Columbia United States 2 hr 7 min 109 mi
  • MidAmerica St. Louis Airport (BLV)
    Belleville United States 34 min 20 mi

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 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

Frequently asked questions about flying from St. Louis to Austin

The cheapest flights from St. Louis to Austin are usually in October. Typical ticket prices in October range from $140 to $265.
The cheapest round-trip flight from St. Louis to Austin recently found on Google Flights was with Frontier from $160. The cheapest one-way flight was with Frontier from $80.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Austin is $209, flying from Apr 30 to May 4.
  • The cheapest American flight from St. Louis to Austin is $219, flying from May 2 to May 4.
  • The cheapest United flight from St. Louis to Austin is $219, flying from Apr 23 to Apr 27.
  • The cheapest Delta flight from St. Louis to Austin is $219, flying from Apr 30 to May 4.
  • The cheapest Alaska flight from St. Louis to Austin is $579, flying from May 14 to May 18.
  • The cheapest Frontier flight from St. Louis to Austin is $160, flying from Apr 16 to Apr 19.
The cheapest round-trip flight from St. Louis to Austin starts at $160 from Thu, Apr 16 to Sun, Apr 19. The cheapest one-way flight starts at $80 and departs on Sun, Apr 19.
2 hr is the shortest flight time from St. Louis to Austin.
Austin has mild winters and very hot, humid summers that make some outdoor activities inadvisable. Most visitors arrive Mar–Sep. Spring sees crowds for the South by Southwest (SXSW) music and film festival (Mar) and the blooming of the bluebonnet (mid-Mar–mid Apr), which is the Texas state flower. Hotels are especially crowded during college graduation weekends (May). Fall's popular events are the Austin City Limits music festival (Sep), college football season (Sep–Nov) and the Austin Film Festival (Oct).
It's easy to use Google Flights to find the cheapest days to fly from St. Louis to Austin.
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 St. Louis to Austin 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 St. Louis to Austin.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 20 nonstop flights and 1,027 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .

Other popular airlines flying from St. Louis to Austin are:
  • American offers 486 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .
  • United offers 320 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .
  • Delta offers 230 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .
  • Alaska offers 21 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .
  • Frontier offers 19 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to Austin-Bergstrom International Airport (AUS) .
The number of connecting flights refers to distinct flights with at least one stop between St. Louis and Austin.
The cheapest round-trip flight from St. Louis to Austin recently found on Google Flights was with Frontier from $160. The cheapest one-way flight was with Frontier from $80.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Austin is $209, flying from Apr 30 to May 4.
  • The cheapest American flight from St. Louis to Austin is $219, flying from May 2 to May 4.
  • The cheapest United flight from St. Louis to Austin is $219, flying from Apr 23 to Apr 27.
  • The cheapest Delta flight from St. Louis to Austin is $219, flying from Apr 30 to May 4.
  • The cheapest Alaska flight from St. Louis to Austin is $579, flying from May 14 to May 18.
  • The cheapest Frontier flight from St. Louis to Austin is $160, flying from Apr 16 to Apr 19.
Southwest flies direct from St. Louis to Austin.
  • There are 20 Southwest direct flights from St. Louis to Austin 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 St. Louis and Austin at price $340 is offered by Frontier from Thu, Mar 12 to Sun, Mar 15.
Southwest flies direct from St. Louis to Austin.
  • There are 20 Southwest direct flights from St. Louis to Austin 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 St. Louis to Austin on a daily basis.
The cheapest direct (nonstop) round-trip flights between St. Louis and Austin start at $209 from Thu, May 7 to Mon, May 11 with Southwest.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to Austin, 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 St. Louis and Austin start at $388 from Sat, May 9 to Mon, May 11 with Frontier.
The cheapest economy class round-trip flights between St. Louis and Austin start at $160 from Thu, Apr 16 to Sun, Apr 19.
To book business class trips from St. Louis to Austin, 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 St. Louis and Austin starts at $340 from Thu, Mar 12 to Sun, Mar 15 with Frontier.
The cheapest last-minute deal between St. Louis and Austin at price $340 is offered by Frontier from Thu, Mar 12 to Sun, Mar 15.
To find last-minute flight deals from St. Louis to Austin, 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.

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