What is the flight distance between IAD and STL?

Distance between Dulles International Airport (IAD) and Lambert-St. Louis International Airport (STL) is 1118 kilometers or 695 miles.

Distance From Dulles International Airport to Lambert-St. Louis International Airport (IAD - STL Distance)

Q: How long is the flight from IAD to STL?

Flight time from Dulles International Airport, Washington, United States to Lambert-St. Louis International Airport, Saint Louis, United States is 1 hours 23 minutes under avarage conditions.

Q: What is the time difference between Washington, United States and Saint Louis, United States?

Time difference between Washington (United States) and Saint Louis (United States) is 0 Hours. It is currently 03:13 in Dulles International Airport (IAD) and 03:13 in Lambert-St. Louis International Airport (STL).

The flight distance from Dulles International Airport (IAD) to Lambert-St. Louis International Airport (STL) is 695 miles. This is equivalent to 1118 kilometers or 604 nautical miles. The distance shown below is the straight line distance (may be called as flying or air distance) or direct flight distance between airports.

1118 kilometers is the distance from Dulles International Airport, United States to Lambert-St. Louis International Airport, United States.

Flight Duration between Washington, United States and Saint Louis, United States

Estimated flight time from Dulles International Airport, Washington, United States to Lambert-St. Louis International Airport, Saint Louis, United States is 1 hours 23 minutes under avarage conditions. The flight time calculator assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/hr or 434 knots. Your actual flying time may vary depending on wind speeds or weather conditions.

Time Difference Between the Airports • IAD - STL

Time difference between Washington (United States) and Saint Louis (United States) is 0 Hours.
Current local time in Washington is 2026-08-25, 03:13:24 EDT and time in Saint Louis is 2026-08-25, 03:13:24 EDT.

Dulles International Airport to Lambert-St. Louis International Airport Flight Route Map - IAD to STL Flight Path

Location of Dulles International Airport & Lambert-St. Louis International Airport is given below.
Click the map to view Washington to Saint Louis nonstop flight route path and travel direction.

Click to see flight route on Google Map between Washington, United States and Saint Louis, United States. .

Nonstop flight route between Washington, United States and Saint Louis, United States.

Dulles International Airport
City:	Washington
Country:	United States
IATA Code:	IAD
ICAO Code:	KIAD
GPS Coordinates:	Latitude: N 38° 56' 40.3'' Longitude: W 77° 27' 20.9''
Current time:	2026-08-25, 03:13:24 EDT
Current weather:	Dulles International Airport 15 day weather forecast

Lambert-St. Louis International Airport
City:	Saint Louis
Country:	United States
IATA Code:	STL
ICAO Code:	KSTL
GPS Coordinates:	Latitude: N 38° 44' 55.3'' Longitude: W 90° 22' 12.1''
Current time:	2026-08-25, 03:13:24 EDT
Current weather:	Lambert-St. Louis International Airport 15 day weather forecast
Flights: