Air Miles Calculator

Distance between Knoxville, TN (TYS) and Washington D.C. (IAD)

Flight distance from Knoxville to Washington D.C. (Knoxville McGhee Tyson Airport – Washington Dulles International Airport) is 420 miles / 675 kilometers / 365 nautical miles. Estimated flight time is 1 hour 17 minutes.

Driving distance from Knoxville (TYS) to Washington D.C. (IAD) is 491 miles / 790 kilometers and travel time by car is about 8 hours 42 minutes.

Map of flight path and driving directions from Knoxville to Washington D.C..

Shortest flight path between Knoxville McGhee Tyson Airport (TYS) and Washington Dulles International Airport (IAD).

How far is Washington D.C. from Knoxville?

There are several ways to calculate distances between Knoxville and Washington D.C.. Here are two common methods:

Vincenty's formula (applied above)
  • 419.561 miles
  • 675.218 kilometers
  • 364.588 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
  • 419.048 miles
  • 674.392 kilometers
  • 364.143 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).

Airport information


A Knoxville McGhee Tyson Airport
City: Knoxville, TN
Country: United States Flag of United States
IATA Code: TYS
ICAO Code: KTYS
Coordinates: 35°48′39″N, 83°59′38″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

Time difference and current local times

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

Time Difference

Knoxville, TN

 EDT

Washington D.C.

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 87 kg (191 pounds).

Frequent Flyer Miles Calculator

Knoxville (TYS) → Washington D.C. (IAD).

Distance:
420
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
420

Round trip?