How far is Portsmouth, NH, from Decatur, IL?
The distance between Decatur (Decatur Airport) and Portsmouth (Portsmouth International Airport at Pease) is 961 miles / 1547 kilometers / 835 nautical miles.
The driving distance from Decatur (DEC) to Portsmouth (PSM) is 1161 miles / 1869 kilometers, and travel time by car is about 22 hours 8 minutes.
Decatur Airport – Portsmouth International Airport at Pease
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Distance from Decatur to Portsmouth
There are several ways to calculate the distance from Decatur to Portsmouth. 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 Decatur to Portsmouth?
The estimated flight time from Decatur Airport to Portsmouth International Airport at Pease is 2 hours and 19 minutes.
What is the time difference between Decatur and Portsmouth?
The time difference between Decatur and Portsmouth is 1 hour. Portsmouth is 1 hour ahead of Decatur.
Flight carbon footprint between Decatur Airport (DEC) and Portsmouth International Airport at Pease (PSM)
On average, flying from Decatur to Portsmouth 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 Decatur to Portsmouth
See the map of the shortest flight path between Decatur Airport (DEC) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States  |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″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 |