Air Miles Calculator

Distance between Washington D.C. (IAD) and Roanoke, VA (ROA)

Distance from Washington Dulles International Airport to Roanoke–Blacksburg Regional Airport is 177 miles / 285 kilometers / 154 nautical miles.

Calculations with different methods

Vincenty's formula (applied above)
  • 176.930 miles
  • 284.741 kilometers
  • 153.748 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
  • 176.800 miles
  • 284.532 kilometers
  • 153.635 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 Washington Dulles International Airport (IAD) to Roanoke–Blacksburg Regional Airport (ROA) is 50 minutes.

Time difference and current local times

There is no time difference between Washington D.C. and Roanoke.

Time Difference

Washington D.C.
Roanoke

Washington D.C.

 EST

Roanoke, VA

 EST

Airport information


A 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

B Roanoke–Blacksburg Regional Airport
City: Roanoke, VA
Country: United States Flag of United States
IATA Code: ROA
ICAO Code: KROA
Coordinates: 37°19′31″N, 79°58′31″W

Map

Flight map from Washington D.C. to Roanoke.

Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Roanoke (ROA).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
177
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
177

Round trip?