# 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
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
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.

EDT

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?