How far is Decatur, IL, from Portsmouth, NH?
The distance between Portsmouth (Portsmouth International Airport at Pease) and Decatur (Decatur Airport) is 961 miles / 1547 kilometers / 835 nautical miles.
The driving distance from Portsmouth (PSM) to Decatur (DEC) is 1156 miles / 1861 kilometers, and travel time by car is about 22 hours 6 minutes.
Portsmouth International Airport at Pease – Decatur Airport
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Distance from Portsmouth to Decatur
There are several ways to calculate the distance from Portsmouth to Decatur. Here are two standard methods:
Vincenty's formula (applied above)- 961.011 miles
- 1546.598 kilometers
- 835.096 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- 958.726 miles
- 1542.920 kilometers
- 833.110 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 Decatur?
The estimated flight time from Portsmouth International Airport at Pease to Decatur Airport is 2 hours and 19 minutes.
What is the time difference between Portsmouth and Decatur?
The time difference between Portsmouth and Decatur is 1 hour. Decatur is 1 hour behind Portsmouth.
Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Decatur Airport (DEC)
On average, flying from Portsmouth to Decatur generates about 148 kg of CO2 per passenger, and 148 kilograms equals 327 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 Decatur
See the map of the shortest flight path between Portsmouth International Airport at Pease (PSM) and Decatur Airport (DEC).
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 | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″W |