Map of flight path and driving directions from Houston to Portsmouth.
Shortest flight path between Houston George Bush Intercontinental Airport (IAH) 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)
- 1626.311 miles
- 2617.294 kilometers
- 1413.226 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
- 1624.745 miles
- 2614.774 kilometers
- 1411.865 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).
|A||Houston George Bush Intercontinental Airport|
|B||Portsmouth International Airport at Pease|
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 188 kg (414 pounds).
Frequent Flyer Miles Calculator
Houston (IAH) → Portsmouth (PSM).