# Distance between Boise, ID (BOI) and Portsmouth, NH (PSM)

Flight distance from Boise to Portsmouth (Boise Airport – Portsmouth International Airport at Pease) is 2259 miles / 3636 kilometers / 1963 nautical miles. Estimated flight time is 4 hours 46 minutes.

Driving distance from Boise (BOI) to Portsmouth (PSM) is 2719 miles / 4376 kilometers and travel time by car is about 45 hours 22 minutes.

## Map of flight path and driving directions from Boise to Portsmouth.

Shortest flight path between Boise Airport (BOI) and Portsmouth International Airport at Pease (PSM).

## How far is Portsmouth from Boise?

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

Vincenty's formula (applied above)
• 2259.457 miles
• 3636.243 kilometers
• 1963.414 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
• 2253.378 miles
• 3626.460 kilometers
• 1958.132 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 Boise Airport
City: Boise, ID
Country: United States
IATA Code: BOI
ICAO Code: KBOI
Coordinates: 43°33′51″N, 116°13′22″W

B 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

## Time difference and current local times

The time difference between Boise and Portsmouth is 2 hours. Portsmouth is 2 hours ahead of Boise.

MDT

EDT

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 247 kg (545 pounds).

## Frequent Flyer Miles Calculator

Boise (BOI) → Portsmouth (PSM).

Distance:
2259
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
2259

Round trip?