How far is Portsmouth, NH, from Seattle, WA?
The distance between Seattle (Seattle–Tacoma International Airport) and Portsmouth (Portsmouth International Airport at Pease) is 2483 miles / 3995 kilometers / 2157 nautical miles.
The driving distance from Seattle (SEA) to Portsmouth (PSM) is 2995 miles / 4820 kilometers, and travel time by car is about 55 hours 37 minutes.
Seattle–Tacoma International Airport – Portsmouth International Airport at Pease
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Distance from Seattle to Portsmouth
There are several ways to calculate the distance from Seattle to Portsmouth. Here are two standard methods:
Vincenty's formula (applied above)- 2482.638 miles
- 3995.419 kilometers
- 2157.354 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 2475.804 miles
- 3984.420 kilometers
- 2151.415 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).
How long does it take to fly from Seattle to Portsmouth?
The estimated flight time from Seattle–Tacoma International Airport to Portsmouth International Airport at Pease is 5 hours and 12 minutes.
What is the time difference between Seattle and Portsmouth?
Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and Portsmouth International Airport at Pease (PSM)
On average, flying from Seattle to Portsmouth generates about 273 kg of CO2 per passenger, and 273 kilograms equals 602 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Seattle to Portsmouth
See the map of the shortest flight path between Seattle–Tacoma International Airport (SEA) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States  |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
| Destination | 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 |