St Louis to Washington
STLIAD
Fly from St Louis to Washington starting at USD 62 with F9.
Best fare available on Jun 23, 2026.
Limited seats. Better plans. Book before it's gone.
St Louis to Washington cheapest flights this week
6 Jun
F9
17:27STL
22:09IAD
1 Stop$90VIEW DEAL
23 Jun
F9
18:31STL
09:22IAD
1 Stop$62VIEW DEAL
25 Jun
F9
18:31STL
16:31IAD
1 Stop$114VIEW DEAL
St Louis to Washington monthly flight fare trend
May
from USD 154
Jun
from USD 62
Jul
No flights
Aug
No flights
Sep
No flights
Oct
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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