Air Miles Calculator

Distance between Houston, TX (HOU) and Portsmouth, NH (PSM)

Flight distance from Houston to Portsmouth (Houston William P. Hobby Airport – Portsmouth International Airport at Pease) is 1639 miles / 2637 kilometers / 1424 nautical miles. Estimated flight time is 3 hours 36 minutes.

Driving distance from Houston (HOU) to Portsmouth (PSM) is 1895 miles / 3050 kilometers and travel time by car is about 33 hours 46 minutes.

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

Shortest flight path between Houston William P. Hobby Airport (HOU) and Portsmouth International Airport at Pease (PSM).

How far is Portsmouth from Houston?

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

Vincenty's formula (applied above)
  • 1638.715 miles
  • 2637.257 kilometers
  • 1424.005 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
  • 1637.243 miles
  • 2634.887 kilometers
  • 1422.725 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 Houston William P. Hobby Airport
City: Houston, TX
Country: United States Flag of United States
IATA Code: HOU
ICAO Code: KHOU
Coordinates: 29°38′43″N, 95°16′44″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

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

Time Difference

Houston, TX

 CDT

Portsmouth, NH

 EDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 188 kg (415 pounds).

Frequent Flyer Miles Calculator

Houston (HOU) → Portsmouth (PSM).

Distance:
1639
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1639

Round trip?