Air Miles Calculator

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

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

Time difference and current local times

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

Time Difference

Washington D.C.
St Louis

Washington D.C.

 EST

St Louis, MO

 CST

Airport information


A 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

B 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

Map

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

Frequent Flyer Miles Calculator

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

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?