St Louis to Austin
STLAUS
Fly from St Louis to Austin starting at USD 120 with Frontier Airlines.
Best fare available on Sep 18, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Austin cheapest flights this week
St Louis to Austin monthly flight fare trend
Jul
No flights
Aug
No flights
Sep
from USD 120
Oct
No flights
Nov
No flights
Dec
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Austin
Austin Bergstrom International Airport (AUS)
Austin, AUS
Zone
Chicago
Elev
542 ft
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