Air Miles Calculator

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

Distance from Midway International Airport to Washington Dulles International Airport is 577 miles / 929 kilometers / 502 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 577.259 miles
  • 929.008 kilometers
  • 501.624 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
  • 576.064 miles
  • 927.085 kilometers
  • 500.586 nautical miles

The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).

Flight duration

Estimated flight time from Midway International Airport (MDW) to Washington Dulles International Airport (IAD) is 1 hour 35 minutes.

Time difference and current local times

The time difference between Chicago and Washington D.C. is 1 hour. Washington D.C. is 1 hour ahead of Chicago.

Time Difference

Chicago
Washington D.C.

Chicago, IL

 CST

Washington D.C.

 EST

Airport information


A Midway International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: MDW
ICAO Code: KMDW
Coordinates: 41°47′9″N, 87°45′8″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

Flight map from Chicago to Washington D.C..

Frequent Flyer Miles Calculator

Chicago (MDW) → Washington D.C. (IAD).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
577
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
577

Round trip?