How far is Rockford, IL, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Rockford (Chicago Rockford International Airport) is 931 miles / 1499 kilometers / 809 nautical miles.
The driving distance from Portsmouth (PSM) to Rockford (RFD) is 1130 miles / 1818 kilometers, and travel time by car is about 21 hours 27 minutes.
Portsmouth International Airport at Pease – Chicago Rockford International Airport
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Distance from Portsmouth to Rockford
There are several ways to calculate the distance from Portsmouth to Rockford. 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 Portsmouth to Rockford?
The estimated flight time from Portsmouth International Airport at Pease to Chicago Rockford International Airport is 2 hours and 15 minutes.
What is the time difference between Portsmouth and Rockford?
The time difference between Portsmouth and Rockford is 1 hour. Rockford is 1 hour behind Portsmouth.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Chicago Rockford International Airport (RFD)
On average, flying from Portsmouth to Rockford 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 Portsmouth to Rockford
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | 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 |
| 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 |