How far is Rockford, IL, from Islip, NY?
The distance between Islip (Long Island MacArthur Airport) and Rockford (Chicago Rockford International Airport) is 834 miles / 1343 kilometers / 725 nautical miles.
The driving distance from Islip (ISP) to Rockford (RFD) is 934 miles / 1503 kilometers, and travel time by car is about 17 hours 28 minutes.
Long Island MacArthur Airport – Chicago Rockford International Airport
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Distance from Islip to Rockford
There are several ways to calculate the distance from Islip to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 834.375 miles
- 1342.797 kilometers
- 725.052 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 832.259 miles
- 1339.392 kilometers
- 723.214 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).
How long does it take to fly from Islip to Rockford?
The estimated flight time from Long Island MacArthur Airport to Chicago Rockford International Airport is 2 hours and 4 minutes.
What is the time difference between Islip and Rockford?
The time difference between Islip and Rockford is 1 hour. Rockford is 1 hour behind Islip.
Flight carbon footprint between Long Island MacArthur Airport (ISP) and Chicago Rockford International Airport (RFD)
On average, flying from Islip to Rockford generates about 138 kg of CO2 per passenger, and 138 kilograms equals 304 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Islip to Rockford
See the map of the shortest flight path between Long Island MacArthur Airport (ISP) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | 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 |
| Destination | Chicago Rockford International Airport |
|---|---|
| City: | Rockford, IL |
| Country: | United States |
| IATA Code: | RFD |
| ICAO Code: | KRFD |
| Coordinates: | 42°11′43″N, 89°5′49″W |