Washington to Austin
IADAUS
Fly from Washington to Austin starting at USD 46 with Frontier Airlines.
Best fare available on Oct 19, 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
No flights
Oct
from USD 46
Nov
from USD 88
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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