Air Miles Calculator

Distance between Charleston, SC (CHS) and Portsmouth, NH (PSM)

Flight distance from Charleston to Portsmouth (Charleston International Airport – Portsmouth International Airport at Pease) is 863 miles / 1388 kilometers / 750 nautical miles. Estimated flight time is 2 hours 7 minutes.

Driving distance from Charleston (CHS) to Portsmouth (PSM) is 1000 miles / 1609 kilometers and travel time by car is about 18 hours 33 minutes.

Map of flight path and driving directions from Charleston to Portsmouth.

Shortest flight path between Charleston International Airport (CHS) and Portsmouth International Airport at Pease (PSM).

How far is Portsmouth from Charleston?

There are several ways to calculate distances between Charleston and Portsmouth. Here are two common methods:

Vincenty's formula (applied above)
  • 862.518 miles
  • 1388.088 kilometers
  • 749.508 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
  • 862.847 miles
  • 1388.617 kilometers
  • 749.793 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).

Airport information


A Charleston International Airport
City: Charleston, SC
Country: United States Flag of United States
IATA Code: CHS
ICAO Code: KCHS
Coordinates: 32°53′54″N, 80°2′25″W

B 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

Time difference and current local times

There is no time difference between Charleston and Portsmouth.

Time Difference

Charleston, SC

 EDT

Portsmouth, NH

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 140 kg (310 pounds).

Frequent Flyer Miles Calculator

Charleston (CHS) → Portsmouth (PSM).

Distance:
863
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
863

Round trip?