Air Miles Calculator

Distance between Boston, MA (BOS) and Portsmouth, NH (PSM)

Flight distance from Boston to Portsmouth (Logan International Airport – Portsmouth International Airport at Pease) is 50 miles / 81 kilometers / 44 nautical miles. Estimated flight time is 35 minutes.

Driving distance from Boston (BOS) to Portsmouth (PSM) is 58 miles / 93 kilometers and travel time by car is about 1 hour 20 minutes.

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

Shortest flight path between Logan International Airport (BOS) and Portsmouth International Airport at Pease (PSM).

How far is Portsmouth from Boston?

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

Vincenty's formula (applied above)
  • 50.120 miles
  • 80.660 kilometers
  • 43.553 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
  • 50.162 miles
  • 80.728 kilometers
  • 43.590 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 Logan International Airport
City: Boston, MA
Country: United States Flag of United States
IATA Code: BOS
ICAO Code: KBOS
Coordinates: 42°21′51″N, 71°0′18″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 Boston and Portsmouth.

Time Difference

Boston, MA

 EST

Portsmouth, NH

 EST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 32 kg (71 pounds).

Frequent Flyer Miles Calculator

Boston (BOS) → Portsmouth (PSM).

Distance:
50
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
50

Round trip?