How far is Portsmouth, NH, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 931 miles / 1499 kilometers / 809 nautical miles.
The driving distance from Rockford (RFD) to Portsmouth (PSM) is 1132 miles / 1821 kilometers, and travel time by car is about 21 hours 31 minutes.
Chicago Rockford International Airport – Portsmouth International Airport at Pease
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Distance from Rockford to Portsmouth
There are several ways to calculate the distance from Rockford to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 931.465 miles
- 1499.048 kilometers
- 809.421 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- 929.009 miles
- 1495.095 kilometers
- 807.287 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 Rockford to Portsmouth?
The estimated flight time from Chicago Rockford International Airport to Portsmouth International Airport at Pease is 2 hours and 15 minutes.
What is the time difference between Rockford and Portsmouth?
Flight carbon footprint between Chicago Rockford International Airport (RFD) and Portsmouth International Airport at Pease (PSM)
On average, flying from Rockford to Portsmouth generates about 146 kg of CO2 per passenger, and 146 kilograms equals 322 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Rockford to Portsmouth
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | 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 |
| Destination | Portsmouth International Airport at Pease |
|---|---|
| City: | Portsmouth, NH |
| Country: | United States |
| IATA Code: | PSM |
| ICAO Code: | KPSM |
| Coordinates: | 43°4′40″N, 70°49′23″W |