How far is St Louis, MO, from Washington D.C.?
The distance between Washington D.C. (Washington Dulles International Airport) and St Louis (St. Louis Lambert International Airport) is 696 miles / 1120 kilometers / 605 nautical miles.
The driving distance from Washington D.C. (IAD) to St Louis (STL) is 814 miles / 1310 kilometers, and travel time by car is about 15 hours 35 minutes.
Washington Dulles International Airport – St. Louis Lambert International Airport
Search flights
Distance from Washington D.C. to St Louis
There are several ways to calculate the distance from Washington D.C. to St Louis. Here are two standard 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 planet.
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).
How long does it take to fly from Washington D.C. to St Louis?
The estimated flight time from Washington Dulles International Airport to St. Louis Lambert International Airport is 1 hour and 49 minutes.
What is the time difference between Washington D.C. and St Louis?
Flight carbon footprint between Washington Dulles International Airport (IAD) and St. Louis Lambert International Airport (STL)
On average, flying from Washington D.C. to St Louis generates about 124 kg of CO2 per passenger, and 124 kilograms equals 274 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to St Louis
See the map of the shortest flight path between Washington Dulles International Airport (IAD) and St. Louis Lambert International Airport (STL).
Airport information
| Origin | 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 |
| Destination | 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 |
Airlines flying from Washington D.C. (IAD) to St Louis (STL)
| United Airlines |