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).
Estimated flight time from William P. Hobby Airport (HOU) to Portsmouth International Airport at Pease (PSM) is 3 hours 36 minutes.
Time difference and current local times
The time difference between Houston and Portsmouth is 1 hour. Portsmouth is 1 hour ahead of Houston.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 180 kg (396 pounds).
Houston to Portsmouth flight map.
Frequent Flyer Miles Calculator
Houston (HOU) → Portsmouth (PSM).