Flight Routes from St. Louis to Washington DC

Compare cheap outbound and return flights from St. Louis (STL) to Washington DC (IAD) and find the best offer from numerous airlines and travel agencies.

Trip type
Fastest flight
non-stop flights
29x / week
Flight distance
1,119 km
Time difference

Flight schedule from St. Louis (STL) to Washington DC (IAD)

Select a travel date in the flight schedule for the route from St. Louis (STL) to Washington DC (IAD) and compare affordable flight deals.

offers
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Matching outbound flightsSTL–IAD · 4 of 4
fromto
dep.arr.
durationstopovers
  1. September 13 – 19, 2026
  2. September 20 – 26, 2026
  3. Sep 27 – Oct 3, 2026
    No flights could be found for the active filters.
    1. STLIAD
      nonstop
      1. United Airlines
    2. STLIAD
      nonstop
      1. United Airlines
    3. STLIAD
      nonstop
      1. United Airlines
    4. STLIAD
      nonstop
      1. United Airlines

      Important flight information

      Discover more flights around St. Louis and Washington DC

      Departure airport Airport St. Louis - Lambert International Airport (STL)
      Arrival airport Airport Washington DC - Dulles International Airport, DC (IAD)
      Destination country Flights to United States
      Departure airport - Destination country St. Louis - Lambert International Airport - United States
      Departure airport - City-Code St. Louis - Lambert International Airport - Washington-DC
      Alternative flights to Washington DC
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