Austin to St Louis
AUSSTL
Fly from Austin to St Louis starting at USD 151 with Frontier Airlines.
Best fare available on Sep 9, 2026.
Limited seats. Better plans. Book before it's gone.
Austin to St Louis cheapest flights this week
Austin to St Louis monthly flight fare trend
Sep
from USD 151
Oct
No flights
Nov
No flights
Dec
No flights
Jan
No flights
Feb
No flights
Airport Details
Origin
Austin
Austin Bergstrom International Airport (AUS)
Austin, AUS
Zone
Chicago
Elev
542 ft
Destination
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
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