Map of flight path and driving directions from Watertown to Portsmouth.
Shortest flight path between Watertown International Airport (ART) and Portsmouth International Airport at Pease (PSM).
How far is Portsmouth from Watertown?
There are several ways to calculate distances between Watertown and Portsmouth. Here are two common methods:Vincenty's formula (applied above)
- 268.557 miles
- 432.201 kilometers
- 233.370 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
- 267.883 miles
- 431.116 kilometers
- 232.784 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).
Time difference and current local times
There is no time difference between Watertown and Portsmouth.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 65 kg (142 pounds).
Frequent Flyer Miles Calculator
Watertown (ART) → Portsmouth (PSM).