Air Miles Calculator

Distance between St Louis, MO (STL) and Washington D.C. (IAD)

Distance from St. Louis Lambert International Airport to Washington Dulles International Airport is 696 miles / 1120 kilometers / 605 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 696.181 miles
  • 1120.395 kilometers
  • 604.965 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 694.488 miles
  • 1117.670 kilometers
  • 603.494 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).

Flight duration

Estimated flight time from St. Louis Lambert International Airport (STL) to Washington Dulles International Airport (IAD) is 1 hour 49 minutes.

Time difference and current local times

The time difference between St Louis and Washington D.C. is 1 hour. Washington D.C. is 1 hour ahead of St Louis.

Time Difference

St Louis
Washington D.C.

St Louis, MO

 CST

Washington D.C.

 EST

Airport information


A St. Louis Lambert International Airport
City: St Louis, MO
Country: United States Flag of United States
IATA Code: STL
ICAO Code: KSTL
Coordinates: 38°44′55″N, 90°22′12″W

B Washington Dulles International Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: IAD
ICAO Code: KIAD
Coordinates: 38°56′40″N, 77°27′20″W

Map

Flight map from St Louis to Washington D.C..

Frequent Flyer Miles Calculator

St Louis (STL) → Washington D.C. (IAD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
696
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
696

Round trip?