How far is Portsmouth, NH, from Seattle, WA?
The distance between Seattle (Seattle Boeing Field) and Portsmouth (Portsmouth International Airport at Pease) is 2481 miles / 3993 kilometers / 2156 nautical miles.
The driving distance from Seattle (BFI) to Portsmouth (PSM) is 2994 miles / 4818 kilometers, and travel time by car is about 55 hours 5 minutes.
Seattle Boeing Field – 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)- 2481.110 miles
- 3992.959 kilometers
- 2156.025 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- 2474.278 miles
- 3981.965 kilometers
- 2150.089 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 Boeing Field to Portsmouth International Airport at Pease is 5 hours and 11 minutes.
What is the time difference between Seattle and Portsmouth?
Flight carbon footprint between Seattle Boeing Field (BFI) 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 Boeing Field (BFI) and Portsmouth International Airport at Pease (PSM).
Airport information
| Origin | Seattle Boeing Field |
|---|---|
| City: | Seattle, WA |
| Country: | United States  |
| IATA Code: | BFI |
| ICAO Code: | KBFI |
| Coordinates: | 47°31′47″N, 122°18′7″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 |