Distance between Washington D.C. (IAD) and St Louis, MO (STL)
Distance from Washington D.C. to St Louis (Washington Dulles International Airport – St. Louis Lambert International Airport) is 696 miles / 1120 kilometers / 605 nautical miles.
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Washington D.C. - St Louis
How far is St Louis from Washington D.C.?
There are several ways to calculate distances between Washington D.C. and St Louis. 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 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, MO
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 124 kg (274 pounds).
Airport information
| A | Washington Dulles International Airport |
|---|---|
| City: | Washington D.C. |
| Country: | 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 |
| IATA Code: | STL |
| ICAO Code: | KSTL |
| Coordinates: | 38°44′55″N, 90°22′12″W |
Washington D.C. to St Louis flight path
Shortest flight path between Washington Dulles International Airport (IAD) and St. Louis Lambert International Airport (STL).
Frequent Flyer Miles Calculator
Washington D.C. (IAD) → St Louis (STL).
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