How far is Portsmouth, NH, from Chicago, IL?
The distance between Chicago (Chicago O'Hare International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 874 miles / 1406 kilometers / 759 nautical miles.
The driving distance from Chicago (ORD) to Portsmouth (PSM) is 1065 miles / 1714 kilometers, and travel time by car is about 20 hours 16 minutes.
Chicago O'Hare International Airport – Portsmouth International Airport at Pease
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Distance from Chicago to Portsmouth
There are several ways to calculate the distance from Chicago to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 873.835 miles
- 1406.301 kilometers
- 759.342 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- 871.546 miles
- 1402.618 kilometers
- 757.353 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 Chicago to Portsmouth?
The estimated flight time from Chicago O'Hare International Airport to Portsmouth International Airport at Pease is 2 hours and 9 minutes.
What is the time difference between Chicago and Portsmouth?
The time difference between Chicago and Portsmouth is 1 hour. Portsmouth is 1 hour ahead of Chicago.
Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Portsmouth International Airport at Pease (PSM)
On average, flying from Chicago to Portsmouth generates about 141 kg of CO2 per passenger, and 141 kilograms equals 312 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Chicago to Portsmouth
See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Chicago O'Hare International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States  |
| IATA Code: | ORD |
| ICAO Code: | KORD |
| Coordinates: | 41°58′42″N, 87°54′17″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 |