Air Miles Calculator

Distance between Washington D.C. (IAD) and St Augustine, FL (UST)

Flight distance from Washington D.C. to St Augustine (Washington Dulles International Airport – Northeast Florida Regional Airport) is 658 miles / 1058 kilometers / 572 nautical miles. Estimated flight time is 1 hour 44 minutes.

Driving distance from Washington D.C. (IAD) to St Augustine (UST) is 748 miles / 1203 kilometers and travel time by car is about 13 hours 9 minutes.

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

Shortest flight path between Washington Dulles International Airport (IAD) and Northeast Florida Regional Airport (UST).

How far is St Augustine from Washington D.C.?

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

Vincenty's formula (applied above)
  • 657.672 miles
  • 1058.420 kilometers
  • 571.501 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
  • 658.896 miles
  • 1060.391 kilometers
  • 572.565 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 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 Northeast Florida Regional Airport
City: St Augustine, FL
Country: United States Flag of United States
IATA Code: UST
ICAO Code: KSGJ
Coordinates: 29°57′33″N, 81°20′23″W

Time difference and current local times

There is no time difference between Washington D.C. and St Augustine.

Time Difference

Washington D.C.

 EST

St Augustine, FL

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 120 kg (264 pounds).

Frequent Flyer Miles Calculator

Washington D.C. (IAD) → St Augustine (UST).

Distance:
658
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
658

Round trip?