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

The distance between St Louis (St. Louis Lambert International Airport) and Washington D.C. (Washington Dulles International Airport) is 696 miles / 1120 kilometers / 605 nautical miles.

The driving distance from St Louis (STL) to Washington D.C. (IAD) is 814 miles / 1310 kilometers, and travel time by car is about 15 hours 34 minutes.

St. Louis Lambert International Airport – Washington Dulles International Airport

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696
Miles
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1120
Kilometers
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605
Nautical miles

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Distance from St Louis to Washington D.C.

There are several ways to calculate the distance from St Louis to Washington D.C.. 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 St Louis to Washington D.C.?

The estimated flight time from St. Louis Lambert International Airport to Washington Dulles International Airport is 1 hour and 49 minutes.

Flight carbon footprint between St. Louis Lambert International Airport (STL) and Washington Dulles International Airport (IAD)

On average, flying from St Louis to Washington D.C. 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 St Louis to Washington D.C.

See the map of the shortest flight path between St. Louis Lambert International Airport (STL) and Washington Dulles International Airport (IAD).

Airport information

Origin 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
Destination 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

Airlines flying from St Louis (STL) to Washington D.C. (IAD)

United Airlines