Air Miles Calculator

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

Distance from St Louis to Washington D.C. (St. Louis Lambert International Airport – Washington Dulles International Airport) is 696 miles / 1120 kilometers / 605 nautical miles.

How far is Washington D.C. from St Louis?

There are several ways to calculate distances between St Louis and Washington D.C.. Here are two common 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 – the shortest distance between two points).

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

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 124 kg (274 pounds).

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

St Louis to Washington D.C. flight map.

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?