Air Miles Calculator

Distance between Washington D.C. (DCA) and Islip, NY (ISP)

Flight distance from Washington D.C. to Islip (Ronald Reagan Washington National Airport – Long Island MacArthur Airport) is 249 miles / 400 kilometers / 216 nautical miles. Estimated flight time is 58 minutes.

Driving distance from Washington D.C. (DCA) to Islip (ISP) is 284 miles / 457 kilometers and travel time by car is about 5 hours 32 minutes.

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

Shortest flight path between Ronald Reagan Washington National Airport (DCA) and Long Island MacArthur Airport (ISP).

How far is Islip from Washington D.C.?

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

Vincenty's formula (applied above)
  • 248.650 miles
  • 400.164 kilometers
  • 216.071 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
  • 248.318 miles
  • 399.630 kilometers
  • 215.783 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 Ronald Reagan Washington National Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: DCA
ICAO Code: KDCA
Coordinates: 38°51′7″N, 77°2′15″W

B Long Island MacArthur Airport
City: Islip, NY
Country: United States Flag of United States
IATA Code: ISP
ICAO Code: KISP
Coordinates: 40°47′42″N, 73°6′0″W

Time difference and current local times

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

Time Difference

Washington D.C.

 EDT

Islip, NY

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 59 kg (131 pounds).

Frequent Flyer Miles Calculator

Washington D.C. (DCA) → Islip (ISP).

Distance:
249
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
249

Round trip?