Air Miles Calculator

Distance between Washington D.C. (IAD) and Blountville, TN (TRI)

Distance from Washington D.C. to Blountville (Washington Dulles International Airport – Tri-Cities Regional Airport) is 320 miles / 515 kilometers / 278 nautical miles.

How far is Blountville from Washington D.C.?

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

Vincenty's formula (applied above)
  • 320.247 miles
  • 515.387 kilometers
  • 278.287 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
  • 319.870 miles
  • 514.780 kilometers
  • 277.959 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 (IAD) to Tri-Cities Regional Airport (TRI) is 1 hour 6 minutes.

Time difference and current local times

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

Time Difference

Washington D.C.
Blountville

Washington D.C.

 EDT

Blountville, TN

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 70 kg (154 pounds).

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 Tri-Cities Regional Airport
City: Blountville, TN
Country: United States Flag of United States
IATA Code: TRI
ICAO Code: KTRI
Coordinates: 36°28′30″N, 82°24′26″W

Washington D.C. to Blountville flight path

Shortest flight path between Washington Dulles International Airport (IAD) and Tri-Cities Regional Airport (TRI).

Frequent Flyer Miles Calculator

Washington D.C. (IAD) → Blountville (TRI).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
320
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
320

Round trip?