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Distance between Washington D.C. (IAD) and Chicago, IL (ORD)

Flight distance from Washington D.C. to Chicago (Washington Dulles International Airport – Chicago O'Hare International Airport) is 589 miles / 947 kilometers / 512 nautical miles. Estimated flight time is 1 hour 36 minutes.

Driving distance from Washington D.C. (IAD) to Chicago (ORD) is 710 miles / 1143 kilometers and travel time by car is about 13 hours 25 minutes.

Washington D.C. – Chicago

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589
Miles
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947
Kilometers
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512
Nautical miles

How far is Chicago from Washington D.C.?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common methods:

Vincenty's formula (applied above)
  • 588.645 miles
  • 947.332 kilometers
  • 511.518 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
  • 587.448 miles
  • 945.406 kilometers
  • 510.478 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 to Chicago O'Hare International Airport is 1 hour 36 minutes.

Time difference

The time difference between Washington D.C. and Chicago is 1 hour. Chicago is 1 hour behind Washington D.C..
Washington D.C. time to Chicago time converter

Carbon dioxide emissions

On average flying from Washington D.C. to Chicago generates about 111 kg of CO2 per passenger, 111 kilograms is equal to 245 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 Chicago

Shortest flight path between Washington Dulles International Airport (IAD) and Chicago O'Hare International Airport (ORD).

Airport information

Origin 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
Destination Chicago O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

Airlines flying from Washington D.C. (IAD) to Chicago (ORD)

United Airlines