Washington to Austin
IADAUS
Fly from Washington to Austin starting at USD 86 with Frontier Airlines.
Best fare available on Sep 13, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to Austin cheapest flights this week
Washington to Austin monthly flight fare trend
Sep
from USD 86
Oct
from USD 109
Nov
from USD 123
Dec
from USD 127
Jan
No flights
Feb
No flights
Airport Details
Origin
Washington
Washington Dulles International Airport (IAD)
Dulles, IAD
Zone
New York
Elev
312 ft
Destination
Austin
Austin Bergstrom International Airport (AUS)
Austin, AUS
Zone
Chicago
Elev
542 ft
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