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Distance between Chicago, IL (ORD) and Portsmouth, NH (PSM)

Flight distance from Chicago to Portsmouth (Chicago O'Hare International Airport – Portsmouth International Airport at Pease) is 874 miles / 1406 kilometers / 759 nautical miles. Estimated flight time is 2 hours 9 minutes.

Driving distance from Chicago (ORD) to Portsmouth (PSM) is 1060 miles / 1706 kilometers and travel time by car is about 20 hours 10 minutes.

Chicago – Portsmouth

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874
Miles
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1406
Kilometers
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759
Nautical miles

How far is Portsmouth from Chicago?

There are several ways to calculate distances between Los Angeles and Chicago. Here are two common 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 earth.

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).

Flight Duration

Estimated flight time from Chicago to Portsmouth is 2 hours 9 minutes.

Time difference and current local times

The time difference between Chicago and Portsmouth is 1 hour. Portsmouth is 1 hour ahead of Chicago.

Chicago time to Portsmouth time converter

Time in Chicago: 00:00 ⇆ Time in Portsmouth: 00:00

Current local times

Chicago, IL

 CDT

Portsmouth, NH

 EDT

Carbon dioxide emissions

On average flying from Chicago to Portsmouth generates about 141 kg of CO2 per passenger, 141 kilograms is equal to 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

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 Flag of 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 Flag of United States
IATA Code: PSM
ICAO Code: KPSM
Coordinates: 43°4′40″N, 70°49′23″W