St Louis to Washington
STLIAD
Fly from St Louis to Washington starting at SAR 17 with Frontier Airlines.
Best fare available on Jun 23, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Washington cheapest flights this week
St Louis to Washington monthly flight fare trend
Jun
from SAR 17
Jul
No flights
Aug
No flights
Sep
No flights
Oct
No flights
Nov
No flights
Airport Details
Origin
St Louis
St. Louis Lambert International Airport (STL)
St Louis, STL
Zone
Chicago
Elev
618 ft
Destination
Washington
Washington Dulles International Airport (IAD)
Dulles, IAD
Zone
New York
Elev
312 ft
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